Heat sink with terminals

Abstract

To provide a radiator plate with a terminal, which can be easily manufactured with a simple structure, and can suppress a thickness in an assembling state to a thickness of a radiator plate body or a thickness that is similar to the thickness of the radiator plate body.SOLUTION: In a radiator plate body 12, a slit 28 is formed to an attachment end part 26, and radiator plate convex parts 30(1) and 30(2) are provided to a position of a middle of an inner side edge part 28a of the slit 28. A terminal member 14 includes: a fixing region 40; and a terminal region 42, and provides fixing region concave parts 44(1) and 44(2) at a portion of the middle of an outer side edge part 40a of the fixing region 40. In an assembling state, the fixing region 40 is arranged into an inner side of the slit 28, and the terminal region 42 is projected to an outer side from the attachment end part 26. In an inner side of each of the fixing region concave parts 44(1) and 44(2), radiator plate convex parts 30(1) and 30(2) are entered, the radiator plate convex parts 30(1) and 30(2) are caulked and fixed to the fixing region concave parts 44(1) and 44(2) so that the outer peripheral end surface of the radiator plate convex parts 30(1) and 30(2) is welded with a pressure to an inner peripheral end surface of the fixing region concave parts 44(1) and 44(2).SELECTED DRAWING: Figure 4

Description

Technical Field

[0005]

[0001] The present invention relates to a heat sink for dissipating heat from a heat-generating circuit component, and more particularly to a heat sink with terminals connected to a printed wiring board constituting a circuit board.

Background Art

[0002] The heat sink for circuit components is preferably made of a material with high thermal conductivity. Among them, an aluminum plate that is light and has excellent workability is often used. However, since aluminum is a material that cannot be soldered, when it is necessary to establish electrical conductivity with the internal circuit of the circuit board, a terminal member made of a solderable material is prepared and attached to the aluminum heat sink body.

[0003] For example, Patent Document 1 discloses, as a conventional attachment structure, a first structure in which a plate-like terminal member is screwed to a heat sink body (FIG. 7 of Patent Document 1), and a protrusion is formed on the surface of the heat sink body, and the protrusion is inserted into a hole of the plate-like terminal member, and the tip diameter of the protrusion is made larger than the hole diameter and caulked and fixed (FIGS. 8 and 9 of Patent Document 1).

[0004] Furthermore, as an attachment structure of the invention, an L-shaped raised piece 4 and a protrusion 5 are formed on the heat sink body, and a locking portion 6 locked to the protrusion 5 and a sandwiched portion 7 sandwiched by the L-shaped raised piece 4 are formed on the plate-like terminal member, and a third structure in which the terminal member is mounted so as to be inserted inside the L-shaped raised piece 4 (FIGS. 1 to 6 of Patent Document 1) is disclosed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The second and third structures disclosed in Patent Document 1 require a protrusion, an L-shaped cut-out piece 4, and a projection 5 on the heat sink body, thus requiring special processing of the heat sink body. Furthermore, in the assembled state, the first to third structures have terminal members overlapping the surface of the heat sink body, increasing the thickness of that area, and the screws (heads, threaded parts), crimping parts, or L-shaped cut-out pieces 4 protrude laterally, forcing surrounding circuit components to be mounted at a slightly further distance, hindering high-density mounting of circuit boards.

[0007] This invention has been made in view of the above-mentioned background art, and aims to provide a heat sink with terminals that has a simple structure, is easy to manufacture, and can keep the thickness of the assembled state to be the same as or close to the thickness of the heat sink body. [Means for solving the problem]

[0008] The present invention relates to a heat sink with terminals used for mounting on a printed wiring board constituting a circuit board, comprising a heat sink body and a terminal member made of a metal plate, wherein the heat sink body has an inwardly extending slit formed at one end of its outer shape, which is the mounting end, and a heat sink projection is provided at a position midway along the inner edge of the slit, projecting toward the inner space of the slit, and the terminal member has a fixing region fixed to the heat sink body and a terminal region extending from one end of the fixing region, and the outer edge is positioned midway along the outer edge of the fixing region Inward direction of the terminal member A fixed area recess is provided, which is cut out in the shape of the heat sink. In the assembled state, the fixed area is positioned inside the slit, the terminal area protrudes outward from the mounting end, the heat sink projection fits inside the fixed area recess, and the heat sink projection is crimped and fixed to the fixed area recess such that the outer peripheral end surface of the heat sink projection is in contact with the inner peripheral end surface of the fixed area recess. The outer edge of the fixed area is located The entrance side , inside the terminal member It is formed to be narrower than doing .

[0009] Furthermore, the present invention relates to a heat sink with terminals used for mounting on a printed wiring board constituting a circuit board, comprising a heat sink body and a terminal member made of a metal plate, wherein the heat sink body has an inwardly extending slit formed at one end of its outer shape, which is the mounting end, and a heat sink recess is provided at a position midway along the inner edge of the slit, formed by cutting inward from the inner edge, and the terminal member has a fixing region fixed to the heat sink body and a terminal region extending from one end of the fixing region, and a fixing region protrusion is provided at a position midway along the outer edge of the fixing region, which protrudes outward from the outer edge, and in the assembled state, the fixing region is positioned inside the slit and the terminal region protrudes outward from the mounting end, the fixing region protrusion fits inside the heat sink recess and the fixing region protrusion is crimped and fixed to the heat sink recess such that the outer peripheral end surface of the fixing region protrusion is in contact with the inner peripheral end surface of the heat sink recess. In this case, the heat sink recess is The inner edge portion of the slit is located The entrance side , inside the heat sink body It is formed to be narrower than doing .

[0010] The heat sink body is made of a material that cannot be soldered, and the terminal member is made of a solderable material. Furthermore, the terminal member is a flat plate material in which the fixing area and the terminal area are continuous and flush with each other, and in the assembled state, it is preferable that the fixing area is located in the inner space of the slit of the heat sink body. In the terminal area A stepped portion may be provided, and when the terminal area is inserted into the through hole of the printed circuit board, the stepped portion may be locked to the surface of the printed circuit board, thereby controlling the distance between the heat sink body and the printed circuit board. [Effects of the Invention]

[0011] The heat sink with terminals of the present invention has a simple structure in which specific parts of the heat sink body and terminal member are crimped and fixed to each other, allowing the two members to be firmly joined and integrated. In particular, it has the advantage of being easy to manufacture because it does not require special processing (such as forming protrusions on the surface) to be applied to the heat sink body or terminal member as in the conventional technology.

[0012] Furthermore, since the thickness of the assembled heat sink with terminals can be kept to the same as or close to the thickness of the heat sink itself, it becomes possible to mount surrounding circuit components nearby, thereby enabling even higher density mounting on the circuit board. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing a first embodiment of the heat sink with terminals of the present invention. [Figure 2] Figure 1 shows a plan view (a) of the unfolded blank material of the heat sink body, and a magnified view (b) of the mounting end and its surrounding area. [Figure 3] This is a plan view showing the terminal member in Figure 1. [Figure 4] (a) is a plan view showing an enlarged view of the terminal member and its surrounding portion of the heat sink with terminals according to the first embodiment, and (b) is a cross-sectional view A1-A1 showing the steps in order when attaching the terminal member to the blank material [heat sink body]. [Figure 5] (a) is a plan view showing an enlarged view of the terminal member and its surrounding portion of the heat sink with terminals according to the first embodiment, and (b) is a cross-sectional view A2-A2 showing the steps in order when attaching the terminal member to the heat sink body. [Figure 6] (a) is a front view showing the terminal-equipped heat sink of the first embodiment mounted on the printed circuit board of a circuit board, and (b) is an enlarged view from the left side showing the positional relationship between the heat sink body and the printed circuit board at this time. [Figure 7] This is a perspective view showing one modified example of the heat sink with terminals according to the first embodiment. [Figure 8]Plan views (a)-(c) showing a modified example of the structure of the terminal member in the heat sink with terminals of the first embodiment. [Figure 9] Plan views (a)-(e) showing a modified example of the structure of the joint portion between the fixed region of the terminal member and the heat sink body in the heat sink with terminals of the first embodiment. [Figure 10] Expanded plan view (a) of the terminal member and its peripheral portion, expanded view (b) of the attachment end portion of the blank material [heat sink body] and its peripheral portion, and plan view (c) showing the terminal member, of the second embodiment of the heat sink with terminals of the present invention.

Mode for Carrying Out the Invention

[0014] <<Heat Sink with Terminals of the First Embodiment and Its Modified Examples>> Hereinafter, a first embodiment of the heat sink with terminals of the present invention and its modified examples will be described. <Heat Sink with Terminals 10> First, the heat sink with terminals 10 of the first embodiment will be described based on FIGS. 1 to 6. As shown in FIG. 1, the heat sink with terminals 10 is a member in which a terminal member 14 is attached to a heat sink body 12 formed by bending a metal plate, which will be described later, into a substantially U shape. A heat generating component

[0015]

[0016] ​As shown in Figure 2(b), a slit 28 of a predetermined width extending upward (inward) is formed at the mounting end 26. Two heat sink protrusions 30(1) and 30(2) are provided in pairs on the left and right, projecting toward the inner space of the slit 28, at a position midway along the inner edge 28a of the slit 28.

[0017] Thus, the heat sink body 12 has a roughly H-shaped opening at the mounting end 26, and the fixing area 40 for the terminal member 14, which will be described later, is fixed inside this opening. The work of fixing the terminal member 14 is performed when the heat sink body 12 is in the state of a blank material 13. Also, the dashed lines 32, 34, and 36 in Figure 2(a) indicate the bending positions when the blank material 13 is folded into a three-dimensional shape.

[0018] The terminal member 14 is a flat member made by punching out a flat metal plate (for example, an iron plate or phosphor bronze plate with a thickness of about 0.5 mm), and then applying tin plating or the like to the surface to make it solderable. As shown in Figure 3, the terminal member 14 has a roughly rectangular fixing area 40 that is fixed to the heat sink body 12 and a terminal area 42 that extends from the lower end of the fixing area 40. And, at a position midway along the outer edge 40a of the fixing area 40, the outer edge 40a In the direction of the terminal members 14 Two fixed area recesses 44(1) and 44(2), formed by cutting out a section, are provided as a pair on the left and right sides. The shape of the fixed area recesses 44(1) and 44(2) is roughly trapezoidal. The outer edge portion 40a is located The entrance side , the lower inside of the terminal member 14 It is formed to be narrower than that.

[0019] The terminal region 42 has a soldering portion 42a that extends straight from the lower end of the fixed region 40, and the soldering portion 42a and the fixed region 40 The corner where they intersect A stepped portion 42b is provided therein. Thus, the terminal member 14 has an outer shape of the fixing area 40 which is approximately H-shaped, and as shown in Figures 4(a) and 5(a), the fixing area 40 is placed inside the approximately H-shaped opening of the blank material 13 and fixed therein.

[0020] Next, an example of how to assemble the heat sink 10 with terminals will be described. First, the terminal member 14 is attached to the blank material 13. Specifically, the blank material 13 is placed on the upper surface of the die Da, the fixing area 40 of the terminal member 14 is positioned inside the slit 28, and the terminal area 42 protrudes outward from the mounting end 26. In this state, the heat sink protrusion 30(1) fits inside the fixing area recess 44(1), and the heat sink protrusion 30(2) fits inside the fixing area recess 44(2), each with a predetermined amount of play.

[0021] Subsequently, as shown in Figure 4(b), the heat sink protrusion 30(1) is pressed in the thickness direction using a Pu punch. As a result, the heat sink protrusion 30(1) plastically deforms and spreads outwards, and the outer peripheral end surface of the heat sink protrusion 30(1) is pressed against the inner peripheral end surface of the fixing area recess 44(1), and the heat sink protrusion 30(1) is firmly crimped and fixed to the fixing area recess 44(1).

[0022] Similarly, as shown in Figure 5(b), the heat sink protrusion 30(2) is pressed in the thickness direction using a Pu punch. As a result, the heat sink protrusion 30(2) plastically deforms and spreads outwards, and the outer peripheral end face of the heat sink protrusion 30(2) is pressed against the inner peripheral end face of the fixing area recess 44(2), and the heat sink protrusion 30(2) is firmly crimped and fixed to the fixing area recess 42(2).

[0023] Once the process of attaching the terminal members 14 to the blank material 13 is complete, the blank material 13 is bent to form the U-shaped heat sink body 12. This completes the assembled state of the heat sink 10 with terminals shown in Figure 1.

[0024] Subsequently, the heat-generating component 16 is mounted inside the heat sink body 12, and as shown in Figure 6(a), it is placed on the upper surface of the printed circuit board 18a, with the soldering portion 42a of the terminal member 42 protruding to the lower side through the through hole in the printed circuit board 18a. Then, the soldering portion 42a is soldered to the nearby land 18c, and the heat sink with terminals 10 is connected to the internal circuit via solder 18b.

[0025] Now, let's explain the support legs 22, 24 of the heat sink body 12 and the stepped portion 42b of the terminal area 42 of the terminal member 14. As shown in Figure 6(b), the support legs 22, 24 and the stepped portion 42b are locked to the upper surface of the printed circuit board 18a, allowing the heat sink with terminals 10 to stand on its own, and also controlling the distance d between the lower end of the heat sink body 12 and the printed circuit board 18a. Therefore, when the heat sink with terminals 10 is placed on the printed circuit board 18a, a constant distance d is reliably created without requiring special attention from the assembly worker, ensuring insulation between the heat sink body 12 and the wiring pattern 18d located below it.

[0026] As explained above, the heat sink with terminals 10 has a simple structure in which specific parts of the heat sink body 12 and the terminal member 14 are crimped and fixed to each other, allowing the two members to be firmly joined and integrated. In particular, there is an advantage in that it does not require special processing (such as forming protrusions on the surface) to the heat sink body 12 or the terminal member 14 as in the conventional technology, making it easy to manufacture. In addition, since the thickness of the assembled heat sink with terminals 10 can be kept to almost the same thickness as the heat sink body 12, surrounding circuit components 20 can be mounted close by, as shown in Figure 6(a), enabling further high-density mounting of the circuit board 18.

[0027] <Modified example of heat sink 10 with terminals> Next, several modified examples of the heat sink 10 with terminals will be described in order with reference to Figures 7 to 9. As shown in Figure 7, multiple terminal members 14 may be attached to a single heat sink body 12. With this configuration, the heat sink 10 with terminals can also be used as a jumper member to connect multiple parts of the internal circuit of the circuit board 18.

[0028] Furthermore, the shape of the terminal member 14 can be changed as shown in Figures 8(a) to (c). For example, in Figure 8(a), the terminal region 42 is positioned approximately in the center of the lower end of the fixed region 40, and the soldering portion 42a and the fixed region 40 are The corner where they intersectThe stepped portion 42b described above is provided at two locations. In addition, in Figure 8(b), a through hole 46 is added to the boundary between the fixed area 40 and the terminal area 42. By providing the through hole 46, when soldering the soldering portion 42a to the land 18c on the back surface of the printed circuit board 18a, it is possible to suppress excessive heat loss from the soldering to the fixed area 42 and the heat sink body 12. In addition, in Figure 8(c), the terminal area 42 is composed only of a roughly rectangular soldering portion 42a, and the soldering portion 42a is soldered to the land 18c on the upper surface of the printed circuit board 18a. With this structure, the heat sink with terminals 10 can be treated as a surface mount type component. The modified versions of the terminal member 14 shown in Figures 8(a) to (c) can be implemented without changing the structure of the heat sink body 12.

[0029] The "hatched circles" shown in Figure 8 indicate the positions (crimping positions) where the Pu material is pressed and plastically deformed by the Punch. The same applies to the "hatched circles" shown in Figures 9 and 10.

[0030] Furthermore, the structure of the connection between the fixing area 40 of the terminal member 14 and the heat sink body 12 can be modified as shown in Figures 9(a) to (e). In Figures 9(a) and (b), one heat sink protrusion 30(1) is provided on the heat sink body 12, and one fixing area recess 44(1) is provided on the terminal member 14, with only one location being crimped and fixed. As in this modified example, if the necessary fixing strength can be obtained, the number of crimping fixations may be reduced to one.

[0031] On the other hand, in Figure 9(c), the heat sink body 12 is provided with three heat sink protrusions 30(1) to 30(3), and the terminal member 14 is provided with three fixing area recesses 44(1) to 44(3), and the two are crimped and fixed in a total of three places. Furthermore, in Figure 9(d), the heat sink body 12 is provided with four heat sink protrusions 30(1) to 30(4), and the terminal member 14 is provided with four fixing area recesses 44(1) to 44(4), and the two are crimped and fixed in a total of four places. As in this modified example, the fixing strength can be further improved by increasing the number of crimping points to three or more.

[0032] Alternatively, as shown in Figure 9(e), the two heat sink protrusions 30(1) and (2) of the heat sink body 12 may be arranged in a staggered pattern, and the two fixing area recesses 44(1) and 44(2) of the terminal member 14 may be arranged in a staggered pattern, and the two parts may be crimped and fixed at these two locations.

[0033] <<Heat sink with terminals according to the second embodiment and modified example thereof>> Next, a second embodiment of the heat sink with terminals of the present invention and a modified example thereof will be described. <Heat sink with terminals 48> First, the terminal-equipped heat sink 48 of the second embodiment will be described based on Figures 10(a) to (c). The terminal-equipped heat sink 48 is a component formed by attaching a terminal member 52 to a roughly U-shaped heat sink body 50, and its appearance is almost the same as that of the terminal-equipped heat sink 10 (Figure 1). The heat-generating component 16 is mounted inside the U-shape of the heat sink body 50, and finally, as shown in Figure 6(a), it is mounted on the printed wiring board 18a of the circuit board 18 together with the heat-generating component 16 and other circuit components 20.

[0034] The heat sink body 50 is generally made of a plate material similar to the heat sink body 12, but as shown in Figure 10(b), a slit 28 is provided at the mounting end 26, and a slit 28 is provided at a position midway along the inner edge 28a of the slit 28 From the inside of the heat sink body 50 The difference lies in the fact that it has four heat sink recesses 54(1) to 54(4) formed by cutting out a section. The shape of the heat sink recesses 54(1) to 54(4) is roughly trapezoidal. The inner edge portion 28a is located The entrance side The bottom, which is the inside of the heat sink body 50 It is formed to be narrower than that.

[0035] The terminal member 52 is a plate material similar to the terminal member 14 overall, but differs in that, as shown in Figure 10(c), it has four fixed area protrusions 56(1) to 56(4) that project outward from the outer edge 40a at a position midway along the outer edge 40a of the fixed area 40.

[0036] Next, an example of how to assemble the heat sink 48 with terminals will be described. First, the terminal member 52 is attached to the blank material 13 of the heat sink body 50. Specifically, the blank material 13 is placed on the upper surface of the die Da, the fixing area 40 of the terminal member 52 is positioned inside the slit 28, and the terminal area 42 protrudes outward from the mounting end 26. In this state, the fixing area protrusions 56(1) to 56(4) are each fitted inside the corresponding heat sink recesses 54(1) to 54(4) with a predetermined amount of play.

[0037] Subsequently, the fixed area protrusion 56(1) is pressed in the thickness direction using a Pu punch. As a result, the fixed area protrusion 56(1) plastically deforms and spreads outwards, and the outer peripheral end surface of the fixed area protrusion 56(1) is pressed against the inner peripheral end surface of the heat sink recess 54(1), and the fixed area protrusion 56(1) is firmly crimped and fixed to the heat sink recess 54(1). Similarly, the fixed area protrusions 56(2) to 56(4) are pressed in the thickness direction using a Pu punch, and the fixed area protrusions 56(2) to 56(4) are firmly crimped and fixed to the heat sink recesses 54(2) to 54(4).

[0038] Once the process of attaching the terminal members 52 to the blank material 13 is complete, the blank material 13 is bent to form the U-shaped heat sink body 50. This completes the assembly of the heat sink 48 with terminals.

[0039] Compared to the above-mentioned heat sink with terminals 10, the heat sink with terminals 48 differs in that the crimping position is on the terminal member 52 instead of the heat sink body 50, but it achieves almost the same effect as the heat sink with terminals 10.

[0040] The choice of which configuration of terminal-equipped heat sink 48 or 10 to use (whether to crimp the heat sink body or the terminal member) should be made appropriately, taking into consideration the hardness and ease of plastic deformation of the materials used for the heat sink body and terminal member.

[0041] <Modified example of heat sink 48 with terminals> The terminal-equipped heat sink 48 can be modified in the same way as the modified examples of the terminal-equipped heat sink 10 described above (Figures 7 to 9). That is, multiple terminal members 52 may be attached to a single heat sink body 50, or the shape of the terminal area 42 of the terminal member 52 may be changed, or through holes 46 may be added. Furthermore, the structure of the connection between the fixing area 40 of the terminal member 52 and the heat sink body 50 can also be freely changed in terms of the number and arrangement of the crimping fixing parts.

[0042] <<Other embodiments and variations, etc.>> Note that the heat sink with terminals of the present invention is not limited to the above embodiments. isn't it.

[0043] for example, The above-mentioned heat sinks with terminals 10, 48 have the heat-generating component to be heated mounted inside the U-shape of the heat sink body 12, 50. do In terms of structure, the shape of the heat sink itself can be freely changed to match the shape and number of heat-generating components.

[0044] The above-described heat sinks with terminals 10 and 48 are designed such that, in their assembled state, the fixing area of ​​the terminal component fits within the inner space of the slit in the heat sink body, and the thickness of the heat sink with terminals is kept to approximately the same as that of the heat sink body. However, the fixing area may protrude slightly to the front and back sides of the heat sink body, as long as it does not cause problems in relation to surrounding circuit components. Furthermore, the surface-mount type terminal shape shown in Figure 8(c) has a shape in which the soldering portion 42a of the terminal area 42 extends straight downward, and the terminal area 42 does not protrude to the front and back sides of the heat sink body 12, making it a structure suitable for high-density mounting. However, if the conditions are met, it is also possible to make the tip of the soldering portion 42a bent laterally (a so-called gull-wing shape or J-lead shape). [Explanation of Symbols]

[0045] 10,48 Heat sink with terminals 12.50 Heat sink body 13. Blank material (heat sink body) 14,52 Terminal members 18 Circuit boards 18a Printed circuit board 26 Mounting end 28 slits 28a Inner edge 30(1)~30(4) Heat sink recess 40 Fixed area (terminal component) 40a Outer edge 42 Terminal area (terminal component) 42b Stepped section 44(1)~44(4) Fixed area recess 54(1)~54(4) Heat sink recess 56(1)~56(4) Fixed area protrusion

Claims

1. In a heat sink with terminals used for mounting on a printed circuit board that constitutes a circuit board, It comprises a heat sink body and terminal members made of metal plate material, The heat sink body has an inwardly extending slit formed at one end of its outer shape, which is the mounting end, and a heat sink projection is provided at a position midway along the inner edge of the slit, projecting toward the inner space of the slit. The terminal member has a fixing region fixed to the heat sink body and a terminal region extending from one end of the fixing region, and a fixing region recess is provided at a position midway along the outer edge of the fixing region, formed by cutting out the outer edge inwards toward the terminal member. The fixed area recess is formed so that the entrance side where the outer edge of the fixed area is located is narrower than the inside side of the terminal member. A heat sink with terminals, characterized in that, in the assembled state, the fixing area is positioned inside the slit, the terminal area protrudes outward from the mounting end, the heat sink protrusion fits inside the recess of the fixing area, and the heat sink protrusion is crimped and fixed to the recess of the fixing area such that the outer peripheral end surface of the heat sink protrusion is in contact with the inner peripheral end surface of the recess of the fixing area.

2. In a heat sink with terminals used for mounting on a printed circuit board that constitutes a circuit board, It comprises a heat sink body and terminal members made of metal plate material, The heat sink body has an inwardly extending slit at one end of its outer shape, which is the mounting end, and a heat sink recess is provided at a position midway along the inner edge of the slit, formed by cutting out the inner edge in the direction inward of the heat sink body. The recess in the heat sink is formed so that the entrance side where the inner edge of the slit is located is narrower than the inside of the heat sink body. The terminal member has a fixing region fixed to the heat sink body and a terminal region extending from one end of the fixing region, and a fixing region protrusion is provided at a position midway along the outer edge of the fixing region, projecting outward from the outer edge. A heat sink with terminals, characterized in that, in the assembled state, the fixing area is positioned inside the slit, the terminal area protrudes outward from the mounting end, the fixing area protrusion fits inside the heat sink recess, and the fixing area protrusion is crimped and fixed to the heat sink recess such that the outer peripheral end face of the fixing area protrusion is in pressure contact with the inner peripheral end face of the heat sink recess.

3. The heat sink with terminals according to claim 1 or 2, wherein the heat sink body is made of a material that cannot be soldered, and the terminal member is made of a solderable material.

4. The terminal member is a flat plate material in which the fixed area and the terminal area are continuous and flush with each other. The heat sink with terminals according to claim 1 or 2, wherein, in the assembled state, the fixed area is located within the inner space of the slit of the heat sink body.

5. A stepped portion is provided in the terminal region of the terminal member. The terminal-equipped heat sink according to claim 1 or 2, wherein when the terminal region is inserted into the through-hole of the printed circuit board, the stepped portion is locked to the surface of the printed circuit board, thereby controlling the distance between the heat sink body and the printed circuit board.

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