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
SGD6.87
Each
units
Raspberry Pi 1 & 2 - - - - - - - Black - - - - -
RS Stock No. 389-3451
Mfr. Part No.FHP08
SGD12.70
Each
units
- 61.8mm 50mm 32mm 61.8 x 50 x 32mm - - - - - - - - -
RS Stock No. 492-165
Mfr. Part No.00C855802B
SGD1.96
Each
units
BGA 26mm 26mm 12mm 26 x 26 x 12mm 10.8K/W Wire Clip - - - - Aluminium - -
RS Stock No. 867-0947
Mfr. Part No.SF-08-200-S
BrandSPREADFAST
SGD16.89
Each
units
- 200mm - - 8 x 200mm - - 8mm - - - Copper - SF
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
SGD8.91
1 Bag of 5
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - - -
RS Stock No. 234-2362
Mfr. Part No.PPD0380P
SGD3.25
Each
units
TO-220, TO-3P 38mm 35mm 25mm 38 x 35 x 25mm 7°C/W Clip - Black - - - - -
RS Stock No. 189-8599
Mfr. Part No.SK42-100-SA
SGD24.48
Each
units
- 100mm 200mm 25mm 100 x 200 x 25mm 0.95K/W - - Black - - Aluminium - -
RS Stock No. 264-686
Mfr. Part No.125AB2500B
SGD47.08
Each
units
- 250mm 200mm 25mm 250 x 200 x 25mm 0.58K/W - - Black - - - - -
RS Stock No. 467-551
Mfr. Part No.CMBA054949
BrandMalico
SGD22.68
Each
units
BGA 37.5mm 37.5mm 33mm 37.5 x 37.5 x 33mm 2.5K/W Screw - - - - - - -
RS Stock No. 674-4838
Mfr. Part No.ICK S 50x50x25
SGD14.43
Each
units
PGA 50mm 50mm 25mm 50 x 50 x 25mm 2.4K/W Adhesive Foil, Conductive Foil - - - - - - -
RS Stock No. 903-3087
Mfr. Part No.109AB1000B
SGD14.88
Each
units
- 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. 271-858
Mfr. Part No.345AB0750B
SGD19.17
Each
units
- 75mm 120mm 37mm 75 x 120 x 37mm 1.2K/W - - Black - - - - -
RS Stock No. 750-0951
Mfr. Part No.BGA STD 115
SGD3.29
Each
units
BGA 40mm 40mm 18mm 40 x 40 x 18mm 8.2K/W Adhesive Foil - Black - - - - -
RS Stock No. 750-0879
Mfr. Part No.BGA PP 040
SGD5.63
Each
units
BGA 49mm 49mm 35mm 49 x 49 x 35mm 6.5K/W Adhesive Foil - Black - - - - -
RS Stock No. 490-7292
Mfr. Part No.S586/B/125
SGD24.48
Each
units
- 125mm 200mm 25mm 125 x 200 x 25mm 0.72K/W - - Black - - - - -
RS Stock No. 158-556
Mfr. Part No.TDEX6015/TH12G
SGD45.87
Each
units
- 60mm 60mm 47mm 60 x 60 x 47mm 0.5K/W - - Black - - - - -
RS Stock No. 658-031
Mfr. Part No.188AB2500B
SGD44.21
Each
units
- 250mm 150mm 40mm 250 x 150 x 40mm 0.63K/W - - Black - - - - -
RS Stock No. 789-8573
Mfr. Part No.350AB1000B
SGD26.11
Each
units
- 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
- - - - - - - - - - - - - -
RS Stock No. 903-3090
Mfr. Part No.122AB2000B
SGD33.98
Each
units
- 200mm 200mm 15mm 200 x 200 x 15mm 0.23°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
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