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 doesn’t 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’.


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Description Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 712-4320
Mfr. Part No.575200B00000G
kr 4,94
Each (In a Pack of 5)
Units
- 15.2mm 3.1mm 12.7mm - 60°C/W Plug-On Collar - Black - Black Anodized - TO-92 -
RS Stock No. 674-4712
Mfr. Part No.SK454-100SA
kr 19,38
Each
Units
- 100mm 21.45mm 19mm 100 x 21.45 x 19mm 6K/W - - Black - - - - -
RS Stock No. 903-3107
Mfr. Part No.177AB2000B
kr 1 089,67
Each
Units
Universal Rectangular Alu 200mm 300mm 83mm 200 x 300 x 83mm 0.07°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 271-858
Mfr. Part No.345AB0750B
kr 67,77
Each
Units
Universal Rectangular Alu 75mm 120mm 37mm 75 x 120 x 37mm 1.2K/W - - Black - - - - -
RS Stock No. 698-8105
Mfr. Part No.FK 244 08 D2 PAK
kr 13,998
Each (In a Pack of 5)
Units
- 26mm 8mm 10mm 26 x 8 x 10mm 29.3K/W Solder - Silver - - - - -
RS Stock No. 189-8404
Mfr. Part No.SK56-200-SA
kr 850,76
Each
Units
Universal Rectangular Alu 200mm 300mm 40mm 200 x 300 x 40mm 0.3K/W - - Black - - - - -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
kr 549,00
Each
Units
- 190mm 90mm 50mm - - - - - - - - LED Array -
RS Stock No. 722-6915
Mfr. Part No.SK 487/37,5 SA
kr 33,50
Each
Units
- 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS Stock No. 492-165
Mfr. Part No.00C855802B
kr 24,13
Each
Units
Universal Square Alu 26mm 26mm 12mm 26 x 26 x 12mm 10.8K/W Wire Clip - - - - Aluminium BGA -
RS Stock No. 774-2821
Mfr. Part No.LAM 5 100 24
kr 614,85
Each
Units
Universal Rectangular Alu with fan 100mm 50mm 50mm 100 x 50 x 50mm 0.4K/W PCB Mount - Natural - - - - -
RS Stock No. 189-8094
Mfr. Part No.SK104-25,4-STS-22
kr 19,14
Each
Units
- 25.4mm 34.9mm 12.7mm 25.4 x 34.9 x 12.7mm 14K/W Clip - Black - - - TO-220 -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
kr 13,80
Each (In a Bag of 5)
Units
- 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 189-8139
Mfr. Part No.SK129-25,4-STS-220
kr 27,72
Each
Units
- 25.4mm 42mm 25mm 25.4 x 42 x 25mm 6.5K/W Clip - Black - - - - -
RS Stock No. 867-9039
Mfr. Part No.RPI-COOLINGKIT.9
kr 37,15
Each
Units
Banana Pi BPI-M1, Banana Pi BPI-M1+, Banana Pi BPI-M2 Berry, Banana Pi BPI-M2+, Raspberry Pi® 2 B, Raspberry Pi® 3 A+, Raspberry Pi® 3 B, Raspberry Pi® 3 B+, Raspberry Pi® 4 B, Raspberry Pi® A, Raspberry Pi® A+, Raspberry Pi® B, Raspberry Pi® B+ 8.5 mm, 19 mm 6.35 mm, 19 mm 5mm - - - - Black - - - - -
RS Stock No. 158-556
Mfr. Part No.TDEX6015/TH12G
kr 412,95
Each
Units
Universal Square Alu with fan 60mm 60mm 47mm 60 x 60 x 47mm 0.5K/W - - Black - - - - -
RS Stock No. 189-8476
Mfr. Part No.SK64-75-SA-2M3
kr 71,68
Each
Units
- 75mm 70mm 25mm 75 x 70 x 25mm 2.7K/W Screw - Black - - - - -
RS Stock No. 189-9132
Mfr. Part No.FK231SA220
kr 9,75
Each
Units
- 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - TO-220 -
RS Stock No. 234-2520
Mfr. Part No.520AB0750MB
kr 81,44
Each
Units
Universal Rectangular Alu 75mm 88mm 35mm 75 x 88 x 35mm 1.65K/W - - Black - - - - -
RS Stock No. 750-0908
Mfr. Part No.BGA STD 050
kr 18,462
Each (In a Bag of 5)
Units
- 20mm 20mm 19.1mm 20 x 20 x 19.1mm 14K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 189-8101
Mfr. Part No.SK104-38,1-STS-220
kr 19,34
Each
Units
- 38.1mm 34.9mm 12.7mm 38.1 x 34.9 x 12.7mm 11K/W Clip - Black - - - TO-220 -
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