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. 867-9039
Mfr. Part No.RPI-COOLINGKIT.9
SGD7.73
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. 867-0947
Mfr. Part No.SF-08-200-S
BrandSPREADFAST
SGD18.09
Each
units
Heat Pipe 200mm - - 8 x 200mm - - 8mm - - - Copper - SF
RS Stock No. 492-165
Mfr. Part No.00C855802B
SGD3.51
Each
units
Universal Square Alu 26mm 26mm 12mm 26 x 26 x 12mm 10.8K/W Wire Clip - - - - Aluminium BGA -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
SGD13.16
1 Bag of 5
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 234-2362
Mfr. Part No.PPD0380P
SGD3.43
Each
units
- 38mm 35mm 25mm 38 x 35 x 25mm 7°C/W Clip - Black - - - - -
RS Stock No. 264-686
Mfr. Part No.125AB2500B
SGD64.04
Each
units
Universal Rectangular Alu 250mm 200mm 25mm 250 x 200 x 25mm 0.58K/W - - Black - - - - -
RS Stock No. 467-551
Mfr. Part No.CMBA054949
BrandMalico
SGD23.84
Each
units
- 37.5mm 37.5mm 33mm 37.5 x 37.5 x 33mm 2.5K/W Screw - - - - - BGA -
RS Stock No. 189-8599
Mfr. Part No.SK42-100-SA
SGD28.45
Each
units
Universal Rectangular Alu 100mm 200mm 25mm 100 x 200 x 25mm 0.95K/W - - Black - - Aluminium - -
RS Stock No. 674-4838
Mfr. Part No.ICK S 50x50x25
SGD15.53
Each
units
Universal Square Alu 50mm 50mm 25mm 50 x 50 x 25mm 2.4K/W Adhesive Foil, Conductive Foil - - - - - - -
RS Stock No. 271-858
Mfr. Part No.345AB0750B
SGD20.06
Each
units
Universal Rectangular Alu 75mm 120mm 37mm 75 x 120 x 37mm 1.2K/W - - Black - - - - -
RS Stock No. 903-3087
Mfr. Part No.109AB1000B
SGD15.29
Each
units
Universal Square Alu 100mm 100mm 15mm 100 x 100 x 15mm 0.83°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 750-0951
Mfr. Part No.BGA STD 115
SGD3.69
Each
units
- 40mm 40mm 18mm 40 x 40 x 18mm 8.2K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 490-7292
Mfr. Part No.S586/B/125
SGD30.77
Each
units
Universal Rectangular Alu 125mm 200mm 25mm 125 x 200 x 25mm 0.72K/W - - Black - - - - -
RS Stock No. 158-556
Mfr. Part No.TDEX6015/TH12G
SGD48.78
Each
units
Universal Square Alu with fan 60mm 60mm 47mm 60 x 60 x 47mm 0.5K/W - - Black - - - - -
RS Stock No. 658-031
Mfr. Part No.188AB2500B
SGD59.22
Each
units
Universal Rectangular Alu 250mm 150mm 40mm 250 x 150 x 40mm 0.63K/W - - Black - - - - -
RS Stock No. 789-8573
Mfr. Part No.350AB1000B
SGD26.90
Each
units
Universal Rectangular Alu 100mm 125mm 50mm 100 x 125 x 50mm 1°C/W - - Black - - - - -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
SGD69.89
Each
units
- 190mm 90mm 50mm - - - - - - - - LED Array -
RS Stock No. 903-3179
Mfr. Part No.132AB2000B
SGD75.16
Each
units
Universal Rectangular Alu 200mm 250mm 30mm 200 x 250 x 30mm 0.14°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 189-9132
Mfr. Part No.FK231SA220
SGD1.41
Each
units
- 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - TO-220 -
RS Stock No. 750-0914
Mfr. Part No.BGA STD 065
SGD17.25
1 Bag of 5
Bag(s)
- 27.8mm 27.8mm 11.2mm 27.8 x 27.8 x 11.2mm 12.2K/W Adhesive Foil - Black - - - BGA -
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