Small color chip inductor

Abstract

The utility model discloses a small color code sheet inductance, include: pin, shell, numerical color code sheet, coil, error color code sheet, two place pin is located at shell both ends, and two place pin inboard end goes into shell inboard connection coil both ends, and numerical color code sheet and error color code sheet are located at shell upside, and error color code sheet is located at numerical color code sheet right side, the utility model discloses with color code sheet replaces color ring inductance color ring, and color code mark is clearer, and the clear, and color code sheet can also act as the fin effective improvement heat dissipation, and the lead tin alloy plating of shell can block electromagnetic radiation, and reduce the magnetic leakage, thereby can improve small inductance power, and promote small inductance miniaturization.

Description

Technical Field

[0001] This utility model belongs to the field of small high-frequency inductor technology, specifically relating to a small color code chip inductor. Background Technology

[0002] Due to the limited surface area of ​​their casings, small inductors would be difficult to read if their parameters were marked numerically on the casing. Therefore, small inductors typically use color bands for color coding on the casing, known in the industry as color-coded inductors. The color coding of color-coded inductors is similar to that of ordinary color-coded resistors. For a four-band inductor, the first two digits are significant figures, the third is the multiplier, and the fourth is the tolerance class. For a five-band inductor, the first three digits are significant figures, the fourth is the multiplier, and the fifth is the tolerance class. While color bands can clearly indicate parameters on small inductors where size is limited and numbers are difficult to clearly mark, if the inductor's surface area is too small, the color codes may not be clearly identifiable, sometimes requiring a magnifying glass to see them. Furthermore, since the color bands are all the same size, misreading the direction can easily lead to errors in color code reading. Due to their small size, miniature inductors require thinner windings to ensure the number of coil turns. However, the thinner the winding, the higher its resistivity and the greater the heat generation, directly limiting the miniaturization and power of miniature inductors. Due to their size limitations, miniature inductors often lack sufficient space to install magnetic shielding devices. Because of their low power, low-frequency inductors have limited leakage flux, which has little impact on the circuit. However, high-frequency inductors can cause resonance due to interlayer capacitance and other distributed capacitances in the windings, leading to electromagnetic radiation, increased leakage flux, interference with other circuit components, and affecting circuit stability, further limiting the power of miniature high-frequency inductors.

[0003] The above problems have severely limited the miniaturization of high-frequency inductors and reduced the capacity of circuit boards. In order to adapt to the development trend of miniaturization of high-frequency inductors and improve the capacity of circuit boards, the above problems urgently need to be optimized and improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a color-coded inductor with clearer color code markings, better heat dissipation, prevention of magnetic leakage, increased power, and greater advantages for miniaturization.

[0005] The specific solution of this utility model is as follows: a small color code chip inductor, including: pins, a shell, a numerical color code chip, a coil, and an error color code chip; two pins are located at both ends of the shell, and the inner ends of the two pins extend into the inner side of the shell and are respectively connected to the two ends of the coil inside the shell; the numerical color code chip and the error color code chip are located on the upper side of the shell, and the error color code chip is located to the right of the numerical color code chip.

[0006] The pins are made of tin-plated brass.

[0007] The outer shell is made of brass, with a lead-tin alloy plating on the outside. The lead-tin alloy plating can isolate electromagnetic radiation, improve corrosion resistance, and improve the solderability of tin soldering.

[0008] The numerical color code chip is a rectangular brass sheet, with the color code coated on the upper side and soldered to the upper side of the casing on the lower side. It is distributed in three or four locations. For example, if this invention is used to replace a four-color-ring inductor, the numerical color code chip has three locations: the two on the left are significant digits, and the third is the multiplier. If this invention is used to replace a five-color-ring inductor, the numerical color code chip has four locations: the three on the left are significant digits, and the fourth is the multiplier. In this embodiment, the numerical color code chip has four locations. The numerical color code chip uses the standard color code of the color-ring inductor, and the color code is consistent with the corresponding color ring of the color-ring inductor.

[0009] The error color code chip is located to the right of the numerical color code chip. It is a rectangular brass piece with the color code coated on the upper side and soldered to the upper side of the outer casing on the lower side. The upper two sides of the error color code chip are rounded for easy differentiation. The error color code chip uses the standard color code of the color ring inductor, and the color code is consistent with the error grade color ring of the color ring inductor.

[0010] Compared with existing small inductors, this invention has the following advantages: The color code markings of this utility model are clearer and more concise: The color code markings of this utility model are coated on the upper side of the numerical color code sheet and the error color code sheet. The area of ​​the numerical color code sheet and the error color code sheet is much larger than the area of ​​the color ring inductor, and the colored surface is larger, making it easier to observe; the upper two sides of the error color code sheet are rounded to facilitate differentiation and avoid incorrect direction when reading the color code, which would lead to misreading of the color code.

[0011] The present invention has good heat dissipation: the outer shell, numerical color code sheet and error color code sheet are all made of brass, which takes into account both rigidity and heat dissipation. The numerical color code sheet and error color code sheet can act as heat sinks. When the inductor is working, the heat emitted by it is transferred to the numerical color code sheet and error color code sheet through the outer shell, which effectively increases the heat dissipation area.

[0012] This invention can prevent magnetic leakage: The outer shell of this invention is coated with a lead-tin alloy, which can block electromagnetic radiation and effectively prevent electromagnetic leakage caused by resonance caused by interlayer capacitance and other distributed capacitance of the inductor under medium and high frequency operating conditions.

[0013] This invention can improve inductor power: it has good heat dissipation, which can increase the inductor's operating current; it can prevent magnetic leakage, which can prevent magnetic leakage from interfering with other circuit components; and it can effectively improve inductor power.

[0014] This invention facilitates the miniaturization of color-coded inductors: it uses color-coded chips instead of color rings, making the color code markings clearer and more concise; the color-coded chips also function as heat sinks, improving heat dissipation; the outer shell is coated with a lead-tin alloy, which prevents magnetic leakage and eliminates the need for additional magnetic shielding devices; and it effectively promotes the miniaturization of inductors.

[0015] This invention has strong adaptability: the numerical color code sheet and error color code sheet of this invention are made of brass sheets, which support moderate rigidity and plasticity; if there is sufficient space on the circuit board, the numerical color code sheet and error color code sheet can be turned outward with tweezers to increase the spacing and improve the ventilation effect; if the circuit board installation space is compact, the numerical color code sheet and error color code sheet can be rolled inward with tweezers to save installation space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the left side of this utility model; Figure 3 This is a schematic diagram of the error color code chip structure of this utility model. Detailed Implementation

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, a small color code chip inductor includes: pins 1, housing 2, numerical color code chip 3, coil 4, and error color code chip 5; two pins 1 are located at both ends of housing 2, and the inner ends of the two pins 1 extend into the inner side of housing 2 and are respectively connected to the two ends of coil 4 inside housing 2; numerical color code chip 3 and error color code chip 5 are located on the upper side of housing 2, and error color code chip 5 is located to the right of numerical color code chip 3.

[0018] Pin 1 is made of tin-plated brass.

[0019] The outer shell 2 is made of brass, with a lead-tin alloy plating on the outside. The lead-tin alloy plating can isolate electromagnetic radiation, improve corrosion resistance, and improve the solderability of tin soldering.

[0020] The numerical color code chip 3 is a rectangular brass sheet, with the upper side coated with the color code and the lower side soldered to the upper side of the outer casing 2. It is distributed in three or four places. If this utility model is used to replace the four-color ring inductor value, the color code chip 3 has three places, with the two on the left being the significant digits and the third being the multiplier. If this utility model is used to replace the five-color ring, the inductor numerical color code chip 3 has four places, with the three on the left being the significant digits and the fourth being the multiplier. In this embodiment, the numerical color code chip 3 has four places. The numerical color code chip 3 uses the standard color code of the color ring inductor, and the color code is consistent with the relevant color ring of the color ring inductor.

[0021] The error color code chip 5 is located to the right of the numerical color code chip 3. It is a rectangular brass piece with the color code coated on the upper side and soldered to the upper side of the outer casing 2 on the lower side. The upper two sides of the error color code chip 5 are rounded for easy differentiation. The error color code chip 5 uses the standard color code of the color ring inductor, and the color code is consistent with the error level color ring of the color ring inductor.

Claims

1. A small color code chip inductor, comprising: Pins, housing, numerical color code chip, coil, and error color code chip; two pins are located at both ends of the housing, and the inner ends of the two pins extend into the inner side of the housing and are respectively connected to the two ends of the coil inside the housing; characterized in that: the numerical color code chip and the error color code chip are located on the upper side of the housing, and the error color code chip is located to the right of the numerical color code chip.

2. The miniature color code chip inductor according to claim 1, characterized in that: The numerical color code chip is rectangular, with the color code coating on the top side.

3. A miniature color code chip inductor according to claim 1 or 2, characterized in that: The error color code chip is a rectangular brass sheet coated with color code on the upper side, and the upper two sides of the error color code chip are rounded.

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