Terminal structure of electronic components for suppressing electromagnetic noise radiation
Arc-shaped metal terminals on chip components address electromagnetic noise radiation issues, reducing noise and costs by enhancing EMI suppression.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- M3 CORP
- Filing Date
- 2024-10-23
- Publication Date
- 2026-05-11
AI Technical Summary
Existing electronic components, particularly chip components with SMD packages, suffer from electromagnetic noise radiation due to high-frequency currents, which can affect surrounding devices and increase costs through the use of additional EMI countermeasures like gaskets.
The implementation of arc-shaped metal terminals on both sides of rectangular parallelepiped-shaped chip components to suppress electromagnetic noise radiation.
Effectively reduces electromagnetic noise radiation, minimizing the need for additional EMI countermeasures and reducing costs, contributing to energy efficiency and resource conservation.
Smart Images
Figure 2026075747000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the shape of metal terminals of electronic components, and particularly relates to EMI technology for suppressing electromagnetic noise radiation in the high-frequency range.
Background Art
[0002] Recently, with the increasing speed of electronic devices, high-frequency signals are also being used in the electronic components used therein, and there is a trend towards lower voltages for power reduction.
[0003] Among these electronic components, there are chip capacitive components, chip resistors, chip inductors, etc. called chip components in the shape of a rectangular parallelepiped, and SMD (Surface Mount Device) packages are used as packages, each having metal terminals.
[0004] When high-frequency currents flow inside these electronic components, electromagnetic noise is radiated from the metal terminals associated with packages such as SMDs to the outside of the electronic components, causing EMI (Electromagnetic Interference).
[0005] In addition, due to further high-frequencyization in the future, electromagnetic noise radiated from metal terminals associated with packages such as SMDs tends to increase, and there is concern that it may affect surrounding members, devices, and the environment.
[0006] Furthermore, due to the current trend of reducing energy consumption, there is also a problem that devices are more susceptible to the influence of electromagnetic noise because they operate at low voltages.
[0007] As a countermeasure, circuit design has considered methods such as SSC (Spread Spectrum Clock) to disperse and suppress EMI electromagnetic noise, but there is a challenge in that there is no method that takes into account the shape of the metal terminals attached to packages such as SMD.
[0008] Furthermore, regarding these electromagnetic noises, the need to use gaskets and other materials extensively to protect the device casing increases the overall cost of the device and the amount of materials used, which presents another challenge. [Prior art documents] [Patent Documents]
[0009] [Patent Document 1] Japanese Patent Publication No. 2009-60067 [Overview of the project] [Problems that the invention aims to solve]
[0010] Patent Document 1, mentioned above, provides a shield for shielding electronic components from electromagnetic interference (EMI) / radio frequency interference (RFI), but it does not mention the shape of the metal terminals.
[0011] This invention provides a method for suppressing the emission of electromagnetic noise caused by specific shapes of metal terminals of electronic components. [Means for solving the problem]
[0012] The present invention relates to a terminal structure for an electronic component, in which metal terminals are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component. When the aforementioned electronic component is viewed from above, the outer edges of the metal terminals on both sides are in the shape of an arc. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are characterized by being arc-shaped. Terminal structure of electronic components for suppressing electromagnetic noise radiation This makes it possible to effectively suppress electromagnetic noise radiation. [Effects of the Invention]
[0013] The present invention relates to a terminal structure for an electronic component, in which metal terminals are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component. When the aforementioned electronic component is viewed from above, the outer edges of the metal terminals on both sides are in the shape of an arc. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are characterized by being arc-shaped. Terminal structure of electronic components for suppressing electromagnetic noise radiation This makes it possible to effectively suppress electromagnetic noise radiation.
[0014] In this way, it becomes possible to suppress electromagnetic noise radiation generated from the metal terminals of electronic components, and in particular, it becomes possible to suppress the total electromagnetic noise radiation from the terminals of chip components that are mounted in large numbers on printed circuit boards of computer equipment and other devices. This makes it possible to prevent the effects of electromagnetic noise on electronic equipment that is susceptible to external noise due to low voltage for energy saving purposes. Furthermore, it leads to a reduction in the amount of EMI countermeasures components such as gaskets used in electronic equipment, as well as cost reductions. This contributes to CO2 reduction through low voltage and efficient use of resources by reducing EMI countermeasures components, thus contributing to the SDGs. [Brief explanation of the drawing]
[0015] [Figure 1] Top view and front view of one embodiment of the present invention [Figure 2] Top view and front view in another embodiment of the present invention [Figure 3] Top view and front view in another embodiment of the present invention [Figure 4]Top view and front view in another embodiment of the present invention [Figure 5] Top view, front view and metal terminal view in another embodiment of the present invention [Figure 6] Top view and front view in another embodiment of the present invention [Figure 7] Top view and front view in another embodiment of the present invention [Figure 8] Top view and front view in another embodiment of the present invention [Figure 9] Metal terminal view in an embodiment of the present invention [Figure 10] Metal terminal view in an embodiment of the present invention [Figure 11] Top view and front view in another embodiment of the present invention [Figure 12] Top view and front view of a terminal structure without considering electromagnetic noise [Figure 13] Schematic diagram of impedance mismatch due to corner wiring
Modes for Carrying Out the Invention
[0016] Hereinafter, embodiments will be described with reference to the drawings.
[0017] In the description of the drawings, the same reference numerals are assigned to the same elements, and duplicate descriptions are omitted. In addition, the drawings are for the purpose of understanding, and the actual dimensional ratios do not necessarily match the actual ones. Also, an electronic component called a chip component is a rectangular parallelepiped defined by width, length, and height, has metal terminals on both sides, has a surface for soldering to metal pads such as printed wiring boards at the lower parts of the metal terminals on both sides, and when arranged so that the metal terminals can be seen from the left and right and the surface for soldering the metal terminals is arranged at the lower part, the width refers to the length in the left - right direction, and the length refers to the length in the depth direction (front - back direction). In addition, when the metal terminals are arranged so that they can be seen from the left and right and the metal terminals are viewed from above, the thickness of the metal terminals indicates the length of the metal terminal part from the center to the outermost ends on both sides of the metal terminals on both sides.
[0018] Figure 1 shows a top view and a front view of one embodiment of the present invention. Figure 1(a) is a top view, and Figure 1(b) is a front view.
[0019] In the top view and front view of Figure 1, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3, and in the top view, the electronic component 1 has a first width (W1) as its vertical width when viewed from above. In the front view, the height of electronic component 1 when viewed from the side is the first height (H1). It has.
[0020] In the top view of Figure 1, the outer circumferences of the two metal terminals on both sides are in the shape of a semicircular arc. The radius (R1) of the arc of one of the metal terminals 2 in the top view, The radius (R2) of the arc of the other metal terminal 3 in the top view is, This value is half the first width (W1) of electronic component 1.
[0021] In the front view of Figure 1, when the electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, the outer circumference of the upper part of the two metal terminals on both sides is a quarter-circular arc. The radius (R3) of the upper quarter circle of one of the metal terminals 2 in the front view, The radius (R4) of the upper quarter circle of the other metal terminal 3 in the front view is This value is equivalent to the first height (H1) of electronic component 1. The first height (H1) of the electronic component 1 is half the first width (W1) of the electronic component 1.
[0022] Furthermore, in the front view of Figure 1, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0023] Now, let's consider impedance mismatch.
[0024] Figure 13 is a schematic diagram of impedance mismatch caused by corner wiring in a wiring pattern.
[0025] Figure 13 shows the different types of bends required when bending wiring patterns on printed circuit boards and the like.
[0026] Figure 13(a) shows the case where the wiring pattern bends at a 90° angle. Figure 13(b) shows the case where the wiring pattern bends twice at a 45° angle. Figure 13(c) shows the case where the wiring pattern bends along an arc.
[0027] In the case of Figure 13(a), the impedance changes significantly at the corner because it is turned at a 90° right angle. In this case, the current waveform becomes distorted, resulting in a waveform distortion called reflection, which tends to worsen electromagnetic noise such as EMI.
[0028] In Figure 13(b), the corner wiring is bent twice at 45° angles instead of 90°, which mitigates the change in impedance at the corner compared to the case of 90°.
[0029] In the case of Figure 13(c), the corner wiring is in an arc, so the impedance change at the corner is further mitigated than in the case of 45°.
[0030] Therefore, in corner wiring, 45° wiring results in less impedance change than 90° wiring, and arc-shaped wiring results in less impedance change than 45° wiring, thus improving electromagnetic noise such as EMI.
[0031] Next, we will explain the case where electromagnetic noise radiation from metal terminals is not considered, referring to Figure 12.
[0032] Figure 12 shows a top view and a front view of a terminal structure that does not consider electromagnetic noise. It shows a top view and a front view including the terminal structure of a chip component with metal terminals at both ends, without considering electromagnetic noise. Figure 12(a) is a top view, and Figure 12(b) is a front view.
[0033] In the top view and front view of Figure 12, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3.
[0034] In the top view of Figure 12, the two metal terminals on both sides are rectangular, and in the front view of Figure 12, the two metal terminals on both sides are also rectangular, with each of the two metal terminals on both sides forming a rectangular parallelepiped.
[0035] In this case, the metal terminal has a structure in which the right-angle portion of the rectangular parallelepiped protrudes outward. This causes a change in impedance at this right-angle portion, and when high-frequency currents flow, it can potentially generate a large amount of electromagnetic noise such as EMI. Furthermore, even if the outside of the metal terminal of the chip component is not a right angle but an arc structure, the structure does not maximize the radius of the arc, but rather has a small radius, which can also potentially generate a large amount of electromagnetic noise such as EMI. In addition, the surface area of the metal is also large, which can potentially generate a large amount of electromagnetic noise such as EMI. As a result, the structure is not effective in preventing radiated noise.
[0036] Based on the verification of impedance mismatch due to corner wiring and the verification of the front view and front view of the terminal structure without considering electromagnetic noise, the electronic component having arc-shaped metal terminals in the top view and front view of the present invention has the effect of suppressing electromagnetic noise such as EMI.
[0037] Next, other embodiments will be described with reference to the figures.
[0038] Figure 2 shows a top view and a front view in another embodiment of the present invention. Figure 2(a) is a top view, and Figure 2(b) is a front view.
[0039] In the top view and front view of Figure 2, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3, and in the top view, the electronic component 1 has the first width (W1) as its vertical width, and in the front view, the electronic component 1 is It has a second height (H2) in addition to its width.
[0040] In the top view of Figure 2, the outer circumferences of the two metal terminals on both sides are semicircular arcs, which is equivalent to the top view of Figure 1.
[0041] Here, in the front view of Figure 2, Assuming that the second height (H2) of electronic component 1 is less than half the first width (W1) of the electronic component, When the aforementioned electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, The tops of the two metal terminals on both sides are curved. The radius (R5) of the upper arc of one of the metal terminals 2 as viewed from the side, The radius (R6) of the upper part of the other metal terminal 3, as viewed from the side, This value is half the first width (W1) of the electronic component 1.
[0042] Furthermore, in the front view of Figure 2, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0043] Thus, in the top view, the outer edges of one metal terminal 2 and the other metal terminal 3 are semicircular arcs, and in the plan view, the upper parts of one metal terminal 2 and the other metal terminal 3 are arcs, which makes it possible to suppress electromagnetic noise such as EMI.
[0044] Furthermore, other embodiments will be described with reference to the figures.
[0045] Figure 3 shows a top view and a front view in another embodiment of the present invention. Figure 3(a) is a top view, and Figure 3(b) is a front view.
[0046] In the top view and front view of Figure 3, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has the first width (W1) as its vertical dimension, and in the front view, the electronic component 1 has the second height (H2) as its height.
[0047] In the top view of Figure 3, the outer circumferences of the two metal terminals on both sides are semicircular arcs, which is the same as in the top views of Figure 1 and Figure 2.
[0048] Here, in the front view of Figure 3, Assuming that the second height (H2) of electronic component 1 is less than half the first width (W1) of the electronic component, When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The tops of the two metal terminals on both sides are elliptical arcs. Each metal terminal is, It has a portion that is 1 / 4 of the ellipse's area when the ellipse is cut along its minor and major axes. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The metal terminal has a minor axis of an ellipse containing an elliptical arc in the height direction, The length of the major axis (L1) of the ellipse containing the upper elliptical arc of the one metal terminal 2 as viewed from the side, The length of the major axis (L2) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, Equal to the first width (W1) of the aforementioned electronic component, The length of the minor axis (S1) of the ellipse containing the upper elliptical arc of the one metal terminal 2 as viewed from the side, The length of the minor axis (S2) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, This value is twice the second height (H2) of the aforementioned electronic component.
[0049] In this case, a circle (a perfect circle or a regular circle) is included as a part of the ellipse, and a circular arc is also included as a part of the elliptical arc.
[0050] Furthermore, in the front view of Figure 3, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0051] Thus, in the top view, the outer periphery of one metal terminal 2 and the other metal terminal 3 are semicircular arcs, and in the plan view, the upper part of one metal terminal 2 and the upper part of the other metal terminal 3 are elliptical arcs, which makes it possible to suppress electromagnetic noise such as EMI.
[0052] Furthermore, other embodiments will be described with reference to the figures.
[0053] Figure 4 shows a top view and a front view in another embodiment of the present invention. Figure 4(a) is a top view, and Figure 4(b) is a front view.
[0054] In the top view and front view of Figure 4, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has the first width (W1) as its vertical dimension, and in the front view, the electronic component 1 has the second height (H2) as its height.
[0055] In the top view of Figure 4, the outer circumferences of the two metal terminals on both sides are semicircular arcs, which is equivalent to the top views of Figure 1, Figure 2, and Figure 3.
[0056] Here, in the front view of Figure 4, Assuming that the second height (H2) of electronic component 1 is less than half the first width (W1) of the electronic component, When electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, The upper part of the aforementioned metal terminal 2 is in an arc shape. The upper part of the other metal terminal 3 is elliptical, The other metal terminal 3 is, It has a portion that is 1 / 4 of the ellipse's area when the ellipse is cut along its minor and major axes. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The other metal terminal 3 has an ellipse containing an elliptical arc with a minor axis in the height direction, The radius (R5) of the upper arc of one of the metal terminals 2, as viewed from the side, This value is half the first width (W1) of the aforementioned electronic component. The length of the major axis (L2) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, The first width (W1) of the electronic component 1 is equal to the first width (W1) of the electronic component 1, The length of the minor axis (S2) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, This value is twice the second height (H2) of the aforementioned electronic component. When viewed from the side, the other metal terminal 3 occupies one-quarter of the ellipse.
[0057] Furthermore, in the front view of Figure 4, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0058] Thus, in the top view, the outer edges of one metal terminal 2 and the other metal terminal 3 are semicircular arcs, and in the plan view, the upper part of one metal terminal 2 is an arc and the upper part of the other metal terminal 3 is an elliptical arc, which makes it possible to suppress electromagnetic noise such as EMI.
[0059] Furthermore, other embodiments will be described with reference to the figures.
[0060] Figure 5 shows a top view, front view, and metal terminal diagram of another embodiment of the present invention. Figure 5(a) is a top view, Figure 5(b) is a front view, and Figure 5(c) is a diagram of the metal terminals.
[0061] In the top view and front view of Figure 5, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has the second width (W2) as its vertical width when viewed from above, and in the front view, the electronic component 1 has the first height (H1) as its height. In the metal terminal diagram of Figure 5, when the configuration of one metal terminal 2 in the top view of Figure 5 is considered separately, it is shown that one metal terminal 2 is composed of a semicircular portion 4 and a rectangular portion 5 of the metal terminal. Similarly, the other metal terminal 3 is composed of a semicircular portion and a rectangular portion. In this case, at the connection between the semicircular portion 4 and the rectangular portion 5 of the metal terminal in Figure 5, the tangent to the arc of the semicircular portion 4 and the orientation of the side of the rectangular portion 5 coincide, so there is no ridge between the semicircular portion 4 and the rectangular portion 5 of the metal terminal in Figure 5.
[0062] In the front view of Figure 5, when the electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, the upper parts of the two metal terminals on both sides form a quarter-circular arc, which is equivalent to the front view of Figure 1.
[0063] Here, in the top view of Figure 5, Assuming that the second width (W2) of electronic component 1 is less than twice the first height (H1) of the electronic component, Considering the size, it is not possible to form a semicircular metal terminal on the upper surface between one metal terminal 2 and the other metal terminal 3 such that the radius is equal to the first height (H1) of the electronic component 1.
[0064] Furthermore, when the electronic component 1 is viewed from above, The outer circumference of the two metal terminals on both sides has a shape that combines a semicircular section and a rectangular section. The radius (R7) of the arc of the semicircular portion 4 of one of the metal terminals as seen from above, The radius of the arc of the semicircular portion of the other metal terminal as viewed from above (R8) is, This value is half the second width (W2) of the aforementioned electronic component. The length (T1) of one side of the rectangular portion 5 of the metal terminal, as viewed from above, that connects to the tangent of the arc, The length (T2) of one side connected to the tangent to the arc in the rectangular portion of the other metal terminal as viewed from above is, This value is obtained by subtracting half the second width (W2) of the electronic component from the first height (H1) of the electronic component. The length of the other side of the rectangular portion 5 of one of the metal terminals as seen from above, The length of the other side of the rectangular portion of the other metal terminal, as viewed from above, This value is equal to the second width (W2) of the aforementioned electronic component.
[0065] Furthermore, in the front view of Figure 5, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0066] Thus, in the top view, the outer periphery of one metal terminal 2 and the other metal terminal 3 have a shape that includes a semicircular arc, and in the plan view, the upper part of one metal terminal 2 and the upper part of the other metal terminal 3 are arcs, which makes it possible to suppress electromagnetic noise such as EMI.
[0067] Furthermore, other embodiments will be described with reference to the figures.
[0068] Figure 6 shows a top view and a front view in another embodiment of the present invention. Figure 6(a) is a top view, and Figure 6(b) is a front view.
[0069] In the top view and front view of Figure 6, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has a second width (W2) as its vertical dimension, and in the front view, the electronic component 1 has a first height (H1) as its height.
[0070] In the front view of Figure 6, when the electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, the upper parts of the two metal terminals on both sides form a semicircular arc, which is equivalent to the front view of Figure 1 and the front view of Figure 5.
[0071] Here, in the top view of Figure 6, Assuming that the second width (W2) of electronic component 1 is less than twice the first height (H1) of electronic component 1, Considering the size, it is not possible to form a semicircular metal terminal on the upper surface between one metal terminal 2 and the other metal terminal 3 such that the radius is equal to the first height (H1) of the electronic component 1.
[0072] When the aforementioned electronic component 1 is viewed from above, The outer edges of the two metal terminals on both sides are elliptical arcs. Each metal terminal is, It has half the area of the ellipse when the ellipse is cut along its minor axis. When the aforementioned electronic component is viewed from above, The aforementioned metal terminal has an ellipse containing an elliptical arc along its vertical axis. The length of the major axis (L3) of the ellipse containing the elliptical arc of one of the metal terminals 2 as viewed from above, The length of the major axis (L4) of the ellipse containing the elliptical arc of the other metal terminal 3, as viewed from above, This value is equal to twice the first height (H1) of the aforementioned electronic component. The length of the minor axis (S3) of the ellipse containing the elliptical arc of the one metal terminal 2 as viewed from above, The length of the minor axis (S4) of the ellipse containing the elliptical arc of the other metal terminal 3, as viewed from above, This value is equal to the second width (W2) of the aforementioned electronic component. When viewed from above, each metal terminal occupies half the area of its respective ellipse.
[0073] Now, comparing the metal terminals in Figure 5 and Figure 6, The metal terminals on both sides of Figure 5 are composed of a combination of a semicircular section and a rectangular section when viewed from above. The metal terminals on both sides of Figure 6 have an elliptical arc when viewed from above.
[0074] In this case, the difference in shape between the combination of the semicircular and rectangular parts and the elliptical arc, The difference between the radius of the arc in a semicircle and the lengths of the major and minor axes in an elliptical arc, Due to differences in the surface area of the metal terminals on both sides in Figure 5 and the metal terminals on both sides in Figure 6, The frequency and intensity of the radiated noise will vary.
[0075] Furthermore, in the front view of Figure 6, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0076] Thus, in the top view, one metal terminal 2 and the other metal terminal 3 are in the shape of an elliptical arc, and in the plan view, the upper part of one metal terminal 2 and the upper part of the other metal terminal 3 are in the shape of a circular arc, which makes it possible to suppress electromagnetic noise such as EMI.
[0077] Furthermore, other embodiments will be described with reference to the figures.
[0078] Figure 7 shows a top view and a front view in another embodiment of the present invention. Figure 7(a) is a top view, and Figure 7(b) is a front view.
[0079] In the top view and front view of Figure 7, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has a second width (W2) as its vertical dimension, and in the front view, the electronic component 1 has a first height (H1) as its height.
[0080] In the front view of Figure 7, when the electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, the upper parts of the two metal terminals on both sides form a quarter-circular arc, which is equivalent to the front view of Figure 1, the front view of Figure 5, and the front view of Figure 6.
[0081] Here, in the top view of Figure 7, Assuming that the second width (W2) of electronic component 1 is less than twice the first height (H1) of the electronic component, Considering the size, it is not possible to form a semicircular metal terminal on the upper surface between one metal terminal 2 and the other metal terminal 3 such that the radius is equal to the first height (H1) of the electronic component 1.
[0082] Here, in the top view of Figure 7, When the aforementioned electronic component 1 is viewed from above, The outer circumference of one of the metal terminals 2 has a shape that combines a semicircular section and a rectangular section. The radius (R7) of the arc of the semicircular portion of one of the metal terminals 2, as viewed from above, is This value is half the second width (W2) of the aforementioned electronic component. The length (T1) of one side connected to the tangent to the arc in the rectangular portion of one metal terminal 2 as viewed from above is: This value is obtained by subtracting half the second width (W2) of the electronic component from the first height (H1) of the electronic component. The length of the other side of the rectangular portion of the one metal terminal 2 as viewed from above is This value is equal to the second width (W2) of the aforementioned electronic component. The outer circumference of the other metal terminal 3 is shaped like an elliptical arc. The other metal terminal 3 is It has half the area of the ellipse when the ellipse is cut along its minor axis. When the aforementioned electronic component is viewed from above, The other metal terminal 3 has an elliptical arc in the vertical direction and has a minor axis of an ellipse containing an elliptical arc. The length of the major axis (L4) of the ellipse containing the elliptical arc of the other metal terminal 3, as viewed from above, This value is equal to twice the first height (H1) of the aforementioned electronic component. The length of the minor axis (S4) of the ellipse containing the elliptical arc of the other metal terminal 3, as viewed from above, This value is equal to the second width (W2) of the aforementioned electronic component.
[0083] Now, let's compare the metal terminals in Figure 5, Figure 6, and Figure 7. The metal terminals on both sides of Figure 5 are composed of a combination of a semicircular section and a rectangular section when viewed from above. The metal terminals on both sides of Figure 6 have an elliptical arc when viewed from above. Yes, they are. In Figure 7, one metal terminal, when viewed from above, is composed of a combination of a semicircular section and a rectangular section, while the other metal terminal, when viewed from above, has an elliptical arc.
[0084] In this case, the difference in shape between the combination of the semicircular and rectangular parts and the elliptical arc, The difference between the radius of the arc in a semicircle and the lengths of the major and minor axes in an elliptical arc, Due to differences in the surface area of the metal terminals on both sides in Figure 5, the metal terminals on both sides in Figure 6, and the metal terminals on both sides in Figure 7, The frequency and intensity of the radiated noise will vary.
[0085] Furthermore, in the front view of Figure 7, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0086] Thus, in the top view, the outer circumference of one metal terminal 2 has a shape that includes a semicircular arc, and the other metal terminal 3 has an elliptical arc shape. In the plan view, the upper parts of one metal terminal 2 and the other metal terminal 3 are arcs, which makes it possible to suppress electromagnetic noise such as EMI.
[0087] Furthermore, other embodiments will be described with reference to the figures.
[0088] Figure 8 shows a top view and a front view in another embodiment of the present invention. Figure 8(a) is a top view, and Figure 8(b) is a front view.
[0089] In the top view and front view of Figure 8, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, the electronic component 1 has a first width (W1) as its vertical dimension, and in the front view, the electronic component 1 has a first height (H1) as its height.
[0090] Here, the first thickness (T3) of one of the metal terminals 2 of the electronic component 1, The second thickness (T4) of the other metal terminal 3 of the electronic component 1 is, The value of half the first width (W1) of the electronic component 1, Assume that the value is smaller than the first height (H1) of the electronic component 1.
[0091] At this time, when the electronic component 1 is viewed from above, The two metal terminals on either side have a shape that combines one quarter-circle section, a rectangular section, and the other quarter-circle section. When the aforementioned electronic component 1 is viewed from the side so that the two metal terminals on both sides are visible, The upper part of the two metal terminals on either side is a quarter-circle, and the lower part is a rectangle.
[0092] Figure 9 shows the electronic component 1 as viewed from above, in the top view of Figure 8. This indicates that one metal terminal 2 is composed of one quarter-circular portion 6 of the one metal terminal, one rectangular portion 7 of the one metal terminal, and the other quarter-circular portion 8 of the one metal terminal. Similarly, the other metal terminal 3 in the top view is composed of one quarter-circular portion of the other metal terminal, a rectangular portion of the other metal terminal, and the other quarter-circular portion of the other metal terminal.
[0093] Figure 10 shows the electronic component as viewed from the front in the front view of Figure 8. This indicates that one metal terminal 2 is composed of a quarter-circular portion 9 at the top of the one metal terminal and a rectangular portion 10 at the bottom of the one metal terminal. Similarly, the other metal terminal 3 in the front view is also composed of a quarter-circular portion at the top of the other metal terminal and a rectangular portion at the bottom of the other metal terminal.
[0094] Here, The radius (R9) of one of the quarter-circular portions 6 of the aforementioned metal terminal as viewed from above, The radius (R10) of the other quarter-circular portion 8 of the one metal terminal as viewed from above, The radius (R13) of the upper quarter-circular portion 9 of the aforementioned metal terminal, as viewed from the side, Equal to the first thickness (T3) of one of the metal terminals 2 of the aforementioned electronic component, Similarly, The radius (R11) of one quarter-circular portion of the other metal terminal as viewed from above, The radius (R12) of the other quarter-circular portion of the other metal terminal as viewed from above, The radius (R14) of the upper quarter-circular portion of the other metal terminal, as viewed from the side, It is equal to the second thickness (T4) of the other metal terminal of the aforementioned electronic component.
[0095] Also, The length of one side of the rectangular portion 7 of the one metal terminal, as viewed from above, that connects to the tangent of the arc is the value obtained by subtracting twice the first thickness (T3) of the one metal terminal 2 of the electronic component from the first width (W1) of the electronic component. The length of the other side perpendicular to one side of the rectangular portion 7 of the one metal terminal as viewed from above is equal to the first thickness (T3) of the one metal terminal 2 of the electronic component. Similarly, The length of one side connected to the tangent to the arc in the rectangular portion of the other metal terminal 3, as viewed from above, is the value obtained by subtracting twice the second thickness (T4) of the other metal terminal 3 of the electronic component from the first width (W1) of the electronic component. The other side of the rectangular portion of the other metal terminal, as viewed from above, is perpendicular to one side. The length of this is equal to the second thickness (T4) of the other metal terminal 3 of the electronic component.
[0096] Furthermore, When viewed from the side, the length of one side connected to the tangent of the arc in the rectangular portion 10 at the bottom of one of the metal terminals is the value obtained by subtracting the first thickness (T3) of one of the metal terminals 2 of the electronic component from the first height (H1) of the electronic component. When viewed from the side, the length of the other side perpendicular to one side of the rectangular portion 10 at the bottom of one of the metal terminals is equal to the first thickness (T3) of one of the metal terminals 2 of the electronic component. Similarly The length of one side connected to the tangent to the arc in the rectangular portion at the bottom of the other metal terminal, as viewed from the side, is the value obtained by subtracting the second thickness (T4) of the other metal terminal 3 of the electronic component from the first height (H1) of the electronic component. The length of the other side of the rectangular lower portion of the other metal terminal, as viewed from the side, which is perpendicular to one side, is equal to the second thickness (T4) of the other metal terminal 3 of the electronic component.
[0097] Now, let's compare the metal terminals in Figure 5, Figure 6, Figure 7, and Figure 8. The metal terminals on both sides of Figure 5 are composed of a combination of a semicircular section and a rectangular section when viewed from above. The metal terminals on both sides of Figure 6 have an elliptical arc when viewed from above. Yes, they are. In Figure 7, one metal terminal, when viewed from above, is composed of a combination of a semicircular and a rectangular section, while the other metal terminal, when viewed from above, has an elliptical arc. In Figure 8, the metal terminals on both sides, when viewed from above, have a shape that combines one quarter-circular section, a rectangular section, and the other quarter-circular section.
[0098] In this case, the difference in shape between the combination of a semicircular part and a rectangular part, and the elliptical arc, and the combination of one quarter-circular part, a rectangular part, and the other quarter-circular part, The difference between the radius of the arc in a semicircle, the radius of the arc in a quartercircle, and the lengths of the major and minor axes in an elliptical arc, Due to differences in the surface area of the metal terminals on both sides in Figure 5, Figure 6, Figure 7, and Figure 8, The frequency and intensity of the radiated noise will vary.
[0099] Furthermore, in the front view of Figure 8, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0100] Thus, in the top view, the two metal terminals on both sides have a shape that combines one quarter-circular section, a rectangular section, and the other quarter-circular section. In the plan view, the upper part of the two metal terminals on both sides is a quarter-circle, and the lower part is a rectangle, which makes it possible to suppress electromagnetic noise such as EMI.
[0101] Furthermore, other embodiments will be described with reference to the figures.
[0102] Figure 11 shows a top view and a front view in another embodiment of the present invention. Figure 11(a) is a top view, and Figure 11(b) is a front view.
[0103] In the top view and front view of Figure 11, an electronic component 1, called a chip component, has one metal terminal 2 and the other metal terminal 3. In the top view, electronic component 1 has a first width (W1) as its vertical dimension, and in the front view, electronic component 1 has a first height (H1) as its height.
[0104] Here, the first thickness (T3) of one of the metal terminals 2 of the electronic component 1, The second thickness (T4) of the other metal terminal 3 of the electronic component 1 is, The value of half the first width (W1) of the electronic component 1, Assume that the value is smaller than the first height (H1) of the electronic component 1.
[0105] At this time, when the electronic component 1 is viewed from above, The outer edges of the two metal terminals on both sides are elliptical arcs. Each metal terminal is, It has half the area of the ellipse when it is cut along its major axis. When the aforementioned electronic component is viewed from above, The aforementioned metal terminal has a minor axis of an ellipse containing an elliptical arc in the vertical direction, Furthermore, when the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The tops of the two metal terminals on both sides are elliptical arcs. Each metal terminal is, It has a portion that is 1 / 4 of the ellipse's area when the ellipse is cut along its minor and major axes. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The metal terminal has a major axis of an ellipse containing an elliptical arc in the height direction.
[0106] At this time, The length of the major axis (L5) of the ellipse containing the elliptical arc of one of the metal terminals 2 as viewed from above, The length of the major axis (L6) of the ellipse containing the elliptical arc of the other metal terminal 3, as viewed from above, Equal to the first width (W1) of the aforementioned electronic component, The length of the major axis (L7) of the ellipse containing the upper elliptical arc of the one metal terminal 2 as viewed from the side, The length of the major axis (L8) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, This value is equal to twice the first height (H1) of the aforementioned electronic component.
[0107] Also, The length of the minor axis (S5) of the ellipse containing the elliptical arc of the one metal terminal 2 as viewed from above, The length of the minor axis (S7) of the ellipse containing the upper elliptical arc of the one metal terminal 2 as viewed from the side is This value is equal to twice the first thickness (T3) of one of the metal terminals 2 of the aforementioned electronic component. The length of the minor axis of the ellipse containing the elliptical arc of the other metal terminal 3 as viewed from above (S6), The length of the minor axis (S8) of the ellipse containing the upper elliptical arc of the other metal terminal 3, as viewed from the side, This value is equal to twice the second thickness (T4) of the other metal terminal 3 of the aforementioned electronic component.
[0108] Furthermore, in the front view of Figure 11, the lower metal surface of one metal terminal 2 and the lower metal surface of the other metal terminal 3 are connected to a metal pad on a printed circuit board or the like by soldering.
[0109] Thus, in the top view, one metal terminal 2 and the other metal terminal 3 have an elliptical arc shape, and in the plan view, the upper part of one metal terminal 2 and the upper part of the other metal terminal 3 have an elliptical arc shape, which makes it possible to suppress electromagnetic noise such as EMI.
[0110] As explained above, the terminal structure for electronic components for suppressing electromagnetic noise radiation of the present invention has been described with reference to examples. By combining arcs, elliptical arcs, rectangles, etc., as shown in the top view and front view of multiple examples, and applying the resulting shape to the metal terminals of electronic components, it is possible to suppress electromagnetic noise such as EMI.
[0111] In this explanation, we have focused on electronic components known as chip components, but electronic components also include capacitive components, inductor components, and resistor components, and the present invention can be applied to each of these components.
[0112] Furthermore, since the electronic components to which this invention can be applied are often mounted in large numbers on printed circuit boards, such as those in computer equipment, it becomes possible to suppress the total electromagnetic noise radiation from the metal terminals of these mounted chip components. This makes it possible to prevent electromagnetic noise from affecting electronic equipment that is susceptible to external noise and has been subjected to low voltage for energy saving purposes.
[0113] Furthermore, this also leads to a reduction in materials and costs for EMI countermeasures components such as gaskets in electronic equipment, which contributes to the direction of the SDGs by reducing CO2 emissions through lower voltage and by making efficient use of resources by reducing the number of EMI countermeasures components. [Industrial applicability]
[0114] In the terminal structure for electronic components that suppresses electromagnetic noise radiation according to the present invention, by applying shapes such as circular arcs and elliptical arcs to the shape of the metal terminals of electronic components, it becomes possible to suppress electromagnetic noise radiation generated from the metal terminals of electronic components. In particular, it becomes possible to suppress the total electromagnetic noise radiation from the terminals of chip components that are mounted in large numbers on printed circuit boards of computer equipment and the like. This makes it possible to prevent the effects of electromagnetic noise on electronic equipment that is susceptible to external noise and has been lowered in voltage for energy saving purposes. Furthermore, it leads to a reduction in the amount of material and cost of EMI countermeasures components such as gaskets in electronic equipment, and thus contributes to the direction of the SDGs, such as CO2 reduction through lower voltage and efficient use of resources by reducing EMI countermeasures components. [Explanation of Symbols]
[0115] 1. Electronic components 2. One of the metal terminals 3. The other metal terminal 4. The semicircular part of one of the metal terminals 5. The rectangular part of one of the metal terminals 6. One quarter-circular portion of one metal terminal 7. The rectangular part of one of the metal terminals. 8. The other quarter-circular part of one metal terminal. 9. The upper quarter-circle portion of one of the metal terminals 10. The rectangular part at the bottom of one of the metal terminals
Claims
1. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, In the aforementioned electronic component, the vertical dimension is a first width (W1) and the vertical dimension is a first height (H1), and the first height (H1) is half the value of the first width (W1). When the aforementioned electronic component is viewed from above, the outer periphery of the metal terminals on both sides is in the shape of a semicircular arc. The radius (R1) of the arc of one metal terminal as viewed from above, The radius (R2) of the arc of the other metal terminal as viewed from above is, This value is half of the first width (W1), which is the vertical width of the aforementioned electronic component. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are in the shape of a quarter-circular arc. The radius (R3) of the upper quarter circle of one of the metal terminals as viewed from the side, The radius (R4) of the upper quarter circle of the other metal terminal, as viewed from the side, It is the same as the first height (H1), which is the height of the aforementioned electronic component. A terminal structure for an electronic component that suppresses electromagnetic noise radiation, characterized by the above.
2. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, In the aforementioned electronic component, the vertical dimension is a first width (W1), and the vertical dimension is a second height (H2), wherein the second height (H2) is less than half the value of the first width (W1). When the aforementioned electronic component is viewed from above, the outer periphery of the metal terminals on both sides is in the shape of a semicircular arc. The radius (R1) of the arc of one metal terminal as viewed from above, The radius (R2) of the arc of the other metal terminal as viewed from above is, This value is half of the first width (W1), which is the vertical width of the aforementioned electronic component. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The tops of the two metal terminals on both sides are curved. The radius (R5) of the upper arc of one of the metal terminals as viewed from the side, The radius (R6) of the upper arc of the other metal terminal, as viewed from the side, This value is half the first width (W1) of the aforementioned electronic component. A terminal structure for an electronic component that suppresses electromagnetic noise radiation, characterized by the above.
3. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a first width (W1) as its vertical dimension and a second height (H2) as its vertical dimension. The second height (H2) is less than half the value of the first width (W1), When the aforementioned electronic component is viewed from above, the outer periphery of the metal terminals on both sides is in the shape of a semicircular arc. The radius (R1) of the arc of one metal terminal as viewed from above, The radius (R2) of the arc of the other metal terminal as viewed from above is, This value is half of the first width (W1), which is the vertical width of the aforementioned electronic component. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are elliptical arcs, and when the ellipse containing the elliptical arc is cut along its minor and major axes, it has a portion that is 1 / 4 of the elliptical area. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The metal terminal has an ellipse containing an elliptical arc with a minor axis in the height direction, The length of the major axis (L1) of the ellipse containing the upper elliptical arc of the aforementioned metal terminal as viewed from the side, The length of the major axis (L2) of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side, Equal to the first width (W1) of the aforementioned electronic component, The length of the minor axis (S1) of the ellipse containing the elliptical arc at the top of the aforementioned metal terminal, as viewed from the side, The length of the minor axis (S2) of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side, This value is twice the second height (H2) of the aforementioned electronic component. A terminal structure for an electronic component that suppresses electromagnetic noise radiation, characterized by the above.
4. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a first width (W1) as its vertical dimension and a second height (H2) as its vertical dimension. The second height (H2) is less than half the value of the first width (W1), When the aforementioned electronic component is viewed from above, the outer periphery of the metal terminals on both sides is in the shape of a semicircular arc. The radius (R1) of the arc of one metal terminal as viewed from above, The radius (R2) of the arc of the other metal terminal as viewed from above is, This value is half of the first width (W1), which is the vertical width of the aforementioned electronic component. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper part of the aforementioned metal terminal is curved, The radius (R5) of the upper arc of one of the metal terminals, as viewed from the side, This value is half the first width (W1) of the aforementioned electronic component. The upper part of the other metal terminal is an elliptical arc, and it has a portion that is 1 / 4 of the area of the ellipse when the ellipse containing the elliptical arc is cut along the minor axis and the major axis. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The metal terminal has an ellipse containing an elliptical arc with a minor axis in the height direction, The length of the major axis (L2) of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side, Equal to the first width (W1) of the aforementioned electronic component, The length of the minor axis (S2) of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side, This value is twice the second height (H2) of the aforementioned electronic component. A terminal structure for an electronic component that suppresses electromagnetic noise radiation, characterized by the above.
5. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a second width (W2) as its vertical dimension and a first height (H1) as its height. The second width (W2) is less than twice the value of the first height (H1). When the aforementioned electronic component is viewed from above, the metal terminals on both sides have an elliptical arc on their outer periphery with a minor axis in the direction of the vertical width of the metal terminal. The aforementioned metal terminal has half the area of the ellipse obtained when the ellipse containing the elliptical arc is cut along its minor axis. The length of the major axis (L3) of the ellipse containing the elliptical arc of one of the metal terminals as viewed from above, The length of the major axis (L4) of the ellipse containing the elliptical arc of the other metal terminal, as viewed from above, This value is equal to twice the first height (H1) of the aforementioned electronic component. The length of the minor axis of the ellipse containing the elliptical arc of one of the metal terminals as viewed from above (S3), The length of the minor axis of the ellipse containing the elliptical arc of the other metal terminal as viewed from above (S4) is Equal to the second width (W2) of the aforementioned electronic component, When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are in the shape of a quarter-circular arc. The radius (R3) of the upper quarter circle of one of the metal terminals as viewed from the side, The radius (R4) of the upper quarter circle of the other metal terminal, as viewed from the side, The first height (H1), which is the height of the aforementioned electronic component, A terminal structure for an electronic component for suppressing electromagnetic noise radiation, characterized in that the first height (H1) of the electronic component is half the first width (W1) of the electronic component.
6. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a first width (W1) as its vertical dimension and a first height (H1) as its height. When the aforementioned electronic component is viewed from above, the metal terminals on both sides have an elliptical arc on their outer periphery, with the major axis in the direction of the vertical width of the metal terminal. The metal terminals on both sides have a portion that is half the length of the ellipse when the elliptical arc containing the elliptical arc is cut along its major axis when viewed from above. When the aforementioned electronic component is viewed from the side so that the metal terminals on both sides are visible, The upper parts of the metal terminals on both sides have an elliptical arc with a major axis in the height direction, The metal terminals on both sides are When the ellipse containing the aforementioned elliptical arc is viewed from the side, it has a portion that is 1 / 4 of the elliptical area when the ellipse is cut along its minor and major axes. One of the metal terminals of the electronic component has a first thickness (T3), The other metal terminal of the electronic component has a second thickness (T4), The first thickness (T3) of one of the metal terminals of the above electronic component, The second thickness (T4) of the other metal terminal of the aforementioned electronic component is The first width (W1) of the electronic component is half of the value, It is smaller than the value of the first height (H1) of the aforementioned electronic component. The length of the major axis (L5) of the ellipse containing the elliptical arc of one of the metal terminals as viewed from above, The length of the major axis (L6) of the ellipse containing the elliptical arc of the other metal terminal, as viewed from above, Equal to the first width (W1) of the aforementioned electronic component, The length of the major axis (L7) of the ellipse containing the upper elliptical arc of the aforementioned metal terminal as viewed from the side, The length of the major axis (L8) of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side, This value is equal to twice the first height (H1) of the aforementioned electronic component. The length of the minor axis of the ellipse containing the elliptical arc of one of the metal terminals as viewed from above (S5), The length of the minor axis (S7) of the ellipse containing the elliptical arc at the top of the aforementioned metal terminal, as viewed from the side, is This value is equal to twice the first thickness (T3) of one of the metal terminals of the aforementioned electronic component. The length of the minor axis of the ellipse containing the elliptical arc of the other metal terminal as viewed from above (S6), The length of the minor axis of the ellipse containing the upper elliptical arc of the other metal terminal, as viewed from the side (S8), This value is equal to twice the second thickness (T4) of the other metal terminal of the aforementioned electronic component. A terminal structure for an electronic component that suppresses electromagnetic noise radiation, characterized by the above.
7. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a second width (W2) as its vertical dimension and a first height (H1) as its height. The second width (W2) is less than twice the value of the first height (H1). When the aforementioned electronic component is viewed from above, The outer periphery of the metal terminals on both sides has a shape that includes the outermost semicircular part and the rectangular part. The radius (R7) of the arc of the semicircular portion of one of the metal terminals as seen from above, The radius of the arc of the semicircular portion of the other metal terminal, as viewed from above (R8), This value is half the second width (W2) of the aforementioned electronic component. The length (T1) of one side of the rectangular portion of the metal terminal as viewed from above that connects to the tangent of the arc, The length (T2) of one side connected to the tangent to the arc in the rectangular portion of the other metal terminal as viewed from above is, The value obtained by subtracting half the second width (W2) of the electronic component from the first height (H1) of the electronic component. The length of the other side of the rectangular portion of the one metal terminal as viewed from above, The length of the other side of the rectangular portion of the other metal terminal, as viewed from above, This value is equal to the second width (W2) of the aforementioned electronic component. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are in the shape of a quarter-circular arc. The radius (R3) of the upper quarter circle of one of the metal terminals as viewed from the side, The radius (R4) of the upper quarter circle of the other metal terminal, as viewed from the side, It is characterized by being the same as the first height (H1), which is the height of the aforementioned electronic component. Terminal structure for electronic components designed to suppress electromagnetic noise radiation.
8. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a second width (W2) as its vertical dimension and a first height (H1) as its height. The second width (W2) is less than twice the value of the first height (H1). When the aforementioned electronic component is viewed from above, The outer periphery of one of the aforementioned metal terminals has a shape that includes the outermost semicircular part and the rectangular part. The radius (R7) of the arc of the semicircular portion of one of the metal terminals, as viewed from above, This value is half the second width (W2) of the aforementioned electronic component. The length (T1) of one side of the rectangular portion of the aforementioned metal terminal, as viewed from above, that connects to the tangent of the arc, The value obtained by subtracting half the second width (W2) of the electronic component from the first height (H1) of the electronic component. The length of the other side of the rectangular portion of the one metal terminal as viewed from above is This value is equal to the second width (W2) of the aforementioned electronic component. The other metal terminal has an elliptical arc with a minor axis in the vertical direction of the metal terminal, The other metal terminal has half the area of the ellipse when the ellipse containing the elliptical arc is cut along its minor axis. The length of the major axis (L4) of the ellipse containing the elliptical arc of the other metal terminal, as viewed from above, This value is equal to twice the first height (H1) of the aforementioned electronic component. The length of the minor axis of the ellipse containing the elliptical arc of the other metal terminal as viewed from above (S4) is It is equal to the second width (W2) of the aforementioned electronic component, When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper parts of the two metal terminals on both sides are in the shape of a quarter-circular arc. The radius (R3) of the upper quarter circle of one of the metal terminals as viewed from the side, The radius (R4) of the upper quarter circle of the other metal terminal, as viewed from the side, It is characterized by being the same as the first height (H1), which is the height of the aforementioned electronic component. Terminal structure for electronic components designed to suppress electromagnetic noise radiation.
9. A terminal structure for an electronic component, wherein metal terminals having sides of the same shape as the sides are provided on the entire surface of both sides of a rectangular parallelepiped-shaped electronic component called a chip component, The aforementioned electronic component has a first width (W1) as its vertical dimension and a first height (H1) as its height. The first thickness (T3) of one metal terminal of the electronic component, The second thickness (T4) of the other metal terminal of the electronic component is The first width (W1) of the electronic component is half of the value, It is smaller than the value of the first height (H1) of the aforementioned electronic component. When the aforementioned electronic component is viewed from above, The two metal terminals on either side have a shape that combines one quarter-circle section, a rectangular section, and the other quarter-circle section. When the aforementioned electronic component is viewed from the side so that the two metal terminals on both sides are visible, The upper part of the two metal terminals on both sides is a quarter-circle, and the lower part is a rectangle. The radius (R9) of one of the quarter-circular portions of the aforementioned metal terminal as viewed from above, The radius (R10) of the other quarter-circular portion of the one metal terminal as viewed from above, When viewed from the side, the radius (R13) of the upper quarter-circle portion of one of the metal terminals is, Equal to the first thickness (T3) of one of the metal terminals of the aforementioned electronic component, The radius (R11) of one quarter-circular portion of the other metal terminal as viewed from above, The radius (R12) of the other quarter-circular portion of the other metal terminal as viewed from above, The radius (R14) of the upper quarter-circular portion of the other metal terminal, as viewed from the side, Equal to the second thickness (T4) of the other metal terminal of the aforementioned electronic component, The length of one side connected to the tangent of the arc in the rectangular portion of the one metal terminal, as viewed from above, is the value obtained by subtracting twice the first thickness (T3) of the one metal terminal of the electronic component from the first width (W1) of the electronic component. The other side of the rectangular portion of the one metal terminal, as viewed from above, is perpendicular to one side. The length of is equal to the first thickness (T3) of one of the metal terminals of the electronic component. The length of one side connected to the tangent to the arc in the rectangular portion of the other metal terminal, as viewed from above, is the value obtained by subtracting twice the second thickness (T4) of the other metal terminal of the electronic component from the first width (W1) of the electronic component. The other side of the rectangular portion of the other metal terminal, as viewed from above, is perpendicular to one side. The length of is equal to the second thickness (T4) of the other metal terminal of the electronic component. When viewed from the side, the length of one side connected to the tangent of the arc in the rectangular portion at the bottom of one of the metal terminals is the value obtained by subtracting the first thickness (T3) of one of the metal terminals of the electronic component from the first height (H1) of the electronic component. When viewed from the side, the length of the other side perpendicular to one side of the rectangular portion at the bottom of one of the metal terminals is equal to the first thickness (T3) of one of the metal terminals of the electronic component. The length of one side connected to the tangent of the arc in the rectangular portion at the bottom of the other metal terminal, as viewed from the side, is the value obtained by subtracting the second thickness (T4) of the other metal terminal of the electronic component from the first height (H1) of the electronic component. The other metal terminal, when viewed from the side, is characterized in that the length of the other side perpendicular to one side of the rectangular portion at the bottom of the other metal terminal is equal to the second thickness (T4) of the other metal terminal of the electronic component. Terminal structure for electronic components designed to suppress electromagnetic noise radiation.