Heatsinks

Heat sinks are a type of thermal conductor (or heat exchanger) that absorb and dissipate the heat created by electronic and mechanical devices. Heat sinks use convection, conduction or radiation to disperse heat.

What are heat sinks made of?

Heat sinks are made from metal and typically constructed from copper or aluminium. Copper is an excellent thermal conductor, helping to draw heat away from the device that you are trying to cool. Although aluminium doesnt conduct heat as well as copper, it is less expensive and lighter than copper. The heat will normally rise through a number of metal fins. Fin designs are used as they provide a greater surface area for the heat to spread across and dissipate.

What would you use a heat sink for?

Heat sinks prevent devices from overheating and are particularly important in protecting electronics such as CPUs. Components subject to too much heat can become irreparably damaged. In the most severe cases overheating components can result in fires, explosions and injury.

What devices can you use heat sinks for?

Heat sinks can be used to cool a large number of devices. For example, CPUs, LEDs, ICs and modules.

What is the difference between a heat sink and cooling fan?

Heat sinks are a piece of metal that conducts heat away from components. Fans forcibly move warm air away from components.

Terminology

A wide variety of heat sinks are available. Passive heat sinks refer to those without a fan, while the term active heat sinks refer to those with an integrated fan. You may also come across the term HSF which means a heat sink with a fan. Some heat sinks can also be combined with a liquid cooling solution to move heat away from devices. Heat sinks are also frequently spelt as heatsinks.


...
Read more Read less

Filters

Viewing 1 - 20 of 701 products
Results per page
Description Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 722-6915
Mfr. Part No.SK 487/37,5 SA
$6.96
Each
units
TO-220, TO-247 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS Stock No. 271-870
Mfr. Part No.350AB1500B
$60.17
Each
units
Universal Rectangular Alu 150mm 125mm 50mm 150 x 125 x 50mm 0.5K/W - - Black - - - - -
RS Stock No. 169-4252
Mfr. Part No.SK92 150SA
$25.05
Each
units
Universal Rectangular Alu 150mm 100mm 40mm 150 x 100 x 40mm 1K/W - - Black - - - - -
RS Stock No. 903-3093
Mfr. Part No.122AB1000B
$30.03
Each
units
Universal Rectangular Alu 100mm 200mm 15mm 100 x 200 x 15mm 0.4°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 780-5893
Mfr. Part No.ILA-HSINK-STAR-50X20MM-BLK-K
$24.42
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 4, Stanley 1, Stanley 4 - - 20mm 50 (Dia.) x 20mm - Screw 50mm Black - - - LED -
RS Stock No. 903-3080
Mfr. Part No.109AB1500B
$22.66
Each
units
Universal Rectangular Alu 150mm 100mm 15mm 150 x 100 x 15mm 0.6°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 674-4838
Mfr. Part No.ICK S 50x50x25
$12.84
Each
units
Universal Square Alu 50mm 50mm 25mm 50 x 50 x 25mm 2.4K/W Adhesive Foil, Conductive Foil - - - - - - -
RS Stock No. 268-082
Mfr. Part No.PF436G
$1.434
Each (In a Pack of 5)
units
- 19.5mm 12.7mm 13mm 19.5 x 12.7 x 13mm 25°C/W Solder - Black - - - TO-220, TO-262 -
RS Stock No. 189-8274
Mfr. Part No.SK92-100-SA
$18.19
Each
units
Universal Square Alu 100mm 100mm 40mm 100 x 100 x 40mm 1K/W - - Black - - - - -
RS Stock No. 674-4703
Mfr. Part No.SK452-37,5SA
$3.09
Each
units
- 37.5mm 29mm 25mm 37.5 x 29 x 25mm 11K/W - - Black - - - - -
RS Stock No. 221-2182
Mfr. Part No.SK76-50-TO220
$4.42
Each
units
- 32mm 20mm 50mm 50 x 32 x 20mm 6K/W Screw - Black - Black Anodized - TO-220 -
RS Stock No. 234-2362
Mfr. Part No.PPD0380P
$3.93
Each
units
- 38mm 35mm 25mm 38 x 35 x 25mm 7°C/W Clip - Black - - - - -
RS Stock No. 712-4194
Mfr. Part No.576802B00000G
$1.276
Each (In a Pack of 5)
units
- 19.05mm 14.48mm 12.7mm 12.7 x 14.48 x 19.05mm 27.3°C/W Clip - Black - Black Anodized - TO-220, TO-262 -
RS Stock No. 221-2160
Mfr. Part No.SK75-50-TO220
$4.48
Each
units
- 50mm 32mm 14mm 50 x 32 x 14mm 8.5K/W Screw - Black - - - TO-220 -
RS Stock No. 692-0616
Mfr. Part No.LA 9 100 24 V
$169.92
Each
units
Universal Rectangular Alu with fan 100mm 80mm 83mm 100 x 80 x 83mm 0.22K/W - - - - - - - -
RS Stock No. 389-3451
Mfr. Part No.FHP08
$21.23
Each
units
- 61.8mm 50mm 32mm 61.8 x 50 x 32mm - - - - - - - - -
RS Stock No. 234-2463
Mfr. Part No.159AB2000B
$105.22
Each
units
Universal Rectangular Alu 200mm 160mm 40mm 200 x 160 x 40mm 0.55K/W - - Black - - - - -
RS Stock No. 158-562
Mfr. Part No.TDEX6015/TH
$20.39
Each
units
Universal Square Alu 60mm 60mm 16mm 60 x 60 x 16mm 2K/W - - Black - - - - -
RS Stock No. 400-056
Mfr. Part No.193AB1500B
$71.23
Each
units
Universal Rectangular Alu 150mm 240mm 46mm 150 x 240 x 46mm 0.4K/W - - Black - - - - -
RS Stock No. 903-3096
Mfr. Part No.122AB1500B
$40.80
Each
units
Universal Rectangular Alu 150mm 200mm 15mm 150 x 200 x 15mm 0.29°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
Related Products
Designed for high power semi-conductor and thermoelectric applications. ...
Description:
Designed for high power semi-conductor and thermoelectric applications. Compact. Machined thermal interface for excellent heat transfer. Designed for industry standard fans.
Heatsinks designed to allow optimum performance of the ...
Description:
Heatsinks designed to allow optimum performance of the Lambda PFE series power supplies (stk no 560-199 etc)Choice of longitudinal or transverse fins, or low profile HAF-10L options.
ABL design their heat sinks to increase the ...
Description:
ABL design their heat sinks to increase the surface area and therefore dissipate heat over a greater area which leads to quicker cooling of the component. Designed using tempered alloys with greater thermal conductivity to maximise cooling performance. Heat sinks ...
Extruded, cross-cut, optimised design for specific flow required. ...
Description:
Extruded, cross-cut, optimised design for specific flow required. Fits industry standard brick size DC-to-DC modules. Lengthwise and crosswise fin orientations in two different fin heights to allow a precise match to the application. Thin fin geometry which increases thermal performance ...