US-12621924-B2 - Heat sink component terminations

US12621924B2US 12621924 B2US12621924 B2US 12621924B2US-12621924-B2

Abstract

A heat sink component can include a body including a thermally conductive material that is electrically non-conductive. At least one first terminal can be formed over a surface of the body. At least one second terminal can be formed over the surface of the body. A terminal spacing distance can be defined along the surface between the first terminal and the second terminal. A ratio of a length of the surface to the terminal spacing distance can be greater than about 10. Additionally or alternatively, a ratio of the area of the at least one body surface to the total terminal area can be less than 1.2. A component assembly can include a device having a plurality of terminals exposed on a top surface, and the heat source terminal and the heat sink terminal of the heat sink component can be connected with respective terminals of the device.

Inventors

Cory Nelson
Marianne Berolini
Ronald Demcko

Assignees

KYOCERA AVX Components Corporation

Dates

Publication Date: 20260505
Application Date: 20230712

Claims (20)

1 . A heat sink component, comprising: a body comprising a thermally conductive material that is electrically non-conductive, the body defining a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another, the body having a plurality of body surfaces including a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opposite the first end surface along the longitudinal direction, a first side surface, and a second side surface opposite the first side surface along the lateral direction; a heat source terminal formed over at least one body surface of the plurality of body surfaces; and a heat sink terminal formed over the at least one body surface of the plurality of body surfaces, wherein the heat source terminal and the heat sink terminal are formed over the at least one body surface such that the at least one body surface is symmetrical about both a longitudinal centerline axis extending in the longitudinal direction and a lateral centerline axis extending in the lateral direction, wherein a terminal spacing distance is defined along the at least one body surface between the heat source terminal and the heat sink terminal, and wherein a ratio of a length of the at least one body surface to the terminal spacing distance is greater than about 10.
2 . The heat sink component of claim 1 , wherein the at least one body surface has an area defined by a product of the length of the at least one body surface and a width of the at least one body surface, wherein the heat source terminal has a heat source terminal area defined by a product of a heat source terminal length and a heat source terminal width, wherein the heat sink terminal has a heat sink terminal area defined by a product of a heat sink terminal length and a heat sink terminal width, wherein a sum of the heat source terminal area and the heat sink terminal area is a total terminal area, and wherein a ratio of the area of the at least one body surface to the total terminal area is less than 1.2.
3 . The heat sink component of claim 1 , wherein the at least one body surface is the bottom surface.
4 . The heat sink component of claim 1 , wherein the at least one body surface is the top surface.
5 . The heat sink component of claim 1 , wherein the body has a first end spaced apart from a second end along the longitudinal direction, wherein the heat source terminal wraps around the first end such that the heat source terminal is formed over at least the top surface, the bottom surface, and the first end surface, and wherein the heat sink terminal wraps around the second end such that the heat sink terminal is formed over at least the top surface, the bottom surface, and the second end surface.
6 . The heat sink component of claim 1 , wherein the at least one body surface is the bottom surface, wherein the heat source terminal is spaced apart from each of the first end surface, the second end surface, the first side surface, and the second side surface, and further comprising: one or more additional heat source terminals formed over the bottom surface, each additional heat source terminal of the one or more additional heat source terminals spaced apart from the first end surface, the second end surface, the first side surface, and the second side surface.
7 . The heat sink component of claim 1 , wherein the terminal spacing distance is defined in the longitudinal direction.
8 . The heat sink component of claim 1 , wherein the terminal spacing distance is defined in the lateral direction.
9 . The heat sink component of claim 1 , wherein the lateral centerline axis bisects the terminal spacing distance.
10 . The heat sink component of claim 1 , wherein the longitudinal centerline axis bisects the terminal spacing distance.
11 . The heat sink component of claim 1 , wherein the at least one body surface is the bottom surface, wherein the heat sink terminal is disposed adjacent the second end surface, and wherein the heat sink terminal comprises a first flange extending beyond one of the first side surface, the second side surface, or the second end surface.
12 . The heat sink component of claim 11 , wherein the heat sink terminal comprises a second flange extending beyond another of the first side surface, the second side surface, or the second end surface.
13 . The heat sink component of claim 12 , wherein the heat sink terminal comprises a third flange extending beyond the remaining one of the first side surface, the second side surface, or the second end surface.
14 . The heat sink component of claim 1 , wherein the heat source terminal comprises at least one flange.
15 . The heat sink component of claim 1 , wherein the heat source terminal comprises at least one pair of leads.
16 . The heat sink component of claim 1 , further comprising at least one pair of bendable leads extending from at least one of the heat source terminal or the heat sink terminal.
17 . The heat sink component of claim 1 , wherein the heat sink component comprises a material having a thermal conductivity from about 150 W/m·° C. to about 300 W/m·° C. at about 22° C.
18 . A heat sink component, comprising: a body comprising a thermally conductive material that is electrically non-conductive, the body defining a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another, the body having a plurality of body surfaces including a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opposite the first end surface along the longitudinal direction, a first side surface, and a second side surface opposite the first side surface along the lateral direction; a heat source terminal formed over at least one body surface of the plurality of body surfaces; and a heat sink terminal formed over the at least one body surface of the plurality of body surfaces, wherein the heat sink component comprises a material having a thermal conductivity from about 150 W/m·° C. to about 300 W/m·° C. at about 22° C., wherein a terminal spacing distance is defined along the at least one body surface between the heat source terminal and the heat sink terminal, and wherein a ratio of a length of the at least one body surface to the terminal spacing distance is greater than about 10.
19 . The heat sink component of claim 18 , wherein the terminal spacing distance is offset from a lateral centerline axis extending in the lateral direction.
20 . The heat sink component of claim 18 , wherein the terminal spacing distance is offset from a longitudinal centerline axis extending in the longitudinal direction.

Description

RELATED APPLICATION The present application is based upon and claims priority to U.S. Provisional Patent Application Ser. No. 63/390,655, having a filing date of Jul. 20, 2022, which is incorporated herein by reference. BACKGROUND OF THE INVENTION Electrical circuits, such as power amplifier circuits, generate heat during normal operation. Heat build-up may undesirably increase the temperature of the various components of the electrical circuit. If this heat is not sufficiently managed, for example by dissipation to a heat sink, the electrical device may overheat, resulting in damage to the electrical component. SUMMARY OF THE INVENTION In accordance with one embodiment of the present invention, a heat sink component can include a body comprising a thermally conductive material that is electrically non-conductive. The body can define a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another. The body can have a plurality of body surfaces including a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opposite the first end surface along the longitudinal direction, a first side surface, and a second side surface opposite the first side surface along the lateral direction. A heat source terminal can be formed over at least one body surface of the plurality of body surfaces. A heat sink terminal can be formed over the at least one body surface of the plurality of body surfaces. A terminal spacing distance can be defined along the at least one body surface between the heat source terminal and the heat sink terminal. A ratio of a length of the at least one body surface to the terminal spacing distance can be greater than about 10. In accordance with another embodiment of the present invention, a heat sink component can include a body comprising a thermally conductive material that is electrically non-conductive. The body can define a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another. The body can have a plurality of body surfaces including a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opposite the first end surface along the longitudinal direction, a first side surface, and a second side surface opposite the first side surface along the lateral direction. A heat source terminal can be formed over at least one body surface of the plurality of body surfaces. A heat sink terminal can be formed over the at least one body surface of the plurality of body surfaces. The at least one body surface can have an area defined by a product of a length of the at least one body surface and a width of the at least one body surface. The heat source terminal can have a heat source terminal area defined by a product of a heat source terminal length and a heat source terminal width. The heat sink terminal can have a heat sink terminal area defined by a product of a heat sink terminal length and a heat sink terminal width. A sum of the heat source terminal area and the heat sink terminal area can be a total terminal area. A ratio of the area of the at least one body surface to the total terminal area can be less than 1.2. In accordance with another embodiment of the present invention, a heat sink component can include a body comprising a thermally conductive material that is electrically non-conductive. The body can define a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another. The body can have a plurality of body surfaces including a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opposite the first end surface along the longitudinal direction, a first side surface, and a second side surface opposite the first side surface along the lateral direction. A heat source terminal can be formed over at least one body surface of the plurality of body surfaces. A heat sink terminal can be formed over the at least one body surface of the plurality of body surfaces. A terminal spacing distance can be defined along the at least one body surface between the heat source terminal and the heat sink terminal. The terminal spacing distance can be offset from a lateral centerline axis extending along the lateral direction or a longitudinal centerline axis extending along the longitudinal direction. In accordance with yet another embodiment of the present invention, a heat sink component can include a body comprising a thermally conductive material that is electrically non-conductive. The body can define a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to one another. The body can have a top surface, a bottom surface opposite the top surface along the thickness direction, a first end surface, a second end surface opp