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.


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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. 893-5617
Mfr. Part No.C40-058-VE
BrandOhmite
SGD7.76
Each
units
- 58mm 32mm 46.3mm 58 x 32 x 46.3mm - Clip - - - - Aluminium - C40
RS Stock No. 189-8640
Mfr. Part No.SK44-150-SA
SGD13.76
Each
units
Universal 19" Alu 150mm 159mm 15mm 150 x 159 x 15mm 1.4K/W Clamp - Black - - - - -
RS Stock No. 722-6906
Mfr. Part No.SK 574/37,5 SA
SGD4.15
Each
units
- 37.5mm 32.3mm 28mm 37.5 x 32.3 x 28mm 6.5K/W Clip - Black - - - - -
RS Stock No. 712-4162
Mfr. Part No.241409B91200G
SGD21.38
Each
units
1/4 Brick DC/DC Converter 37mm 58mm 22.9mm 37 x 58 x 22.9mm 1.9K/W Screw - - - - - - -
RS Stock No. 189-8836
Mfr. Part No.SK04-100-SA
SGD8.41
Each
units
- 100mm 97mm 25mm 100 x 97 x 25mm 1.5K/W - - Black - - - - -
RS Stock No. 712-4217
Mfr. Part No.573300D00010G
SGD1.29
Each (In a Pack of 5)
units
- 12.7mm 26.16mm 10.16mm 12.7 x 26.16 x 10.16mm 18°C/W PCB Surface Mount - - - - - - -
RS Stock No. 674-4778
Mfr. Part No.ICK LED R 32x14 G
SGD18.37
Each
units
Universal Round Alu - - 14mm 32 (Dia.) x 14mm 15.23K/W Adhesive Foil, Conductive Foil 32mm Black - - - LED -
RS Stock No. 189-8690
Mfr. Part No.SK47-150-SA
SGD52.85
Each
units
Universal Rectangular Alu 150mm 200mm 40mm 150 x 200 x 40mm 0.53K/W - - Black - - - - -
RS Stock No. 189-8410
Mfr. Part No.SK56-75-SA
SGD55.41
Each
units
Universal Rectangular Alu 75mm 300mm 40mm 75 x 300 x 40mm 0.45K/W - - Black - - - - -
RS Stock No. 127-0218
Mfr. Part No.MMP-0141
SGD8.59
Each
units
- 10 mm, 14 mm 10 mm, 14 mm 10 mm, 14 mm 10 x 10 x 10 (Medium Ethernet Controller) mm, 14 x 14 x 14 (Large Broadcom CPU) mm 25°C/W Thermal Adhesive Tape - Green Broadcom, Ethernet SOCs Green Anodised Aluminium SOC MMP
RS Stock No. 674-4712
Mfr. Part No.SK454-100SA
SGD2.62
Each
units
- 100mm 21.45mm 19mm 100 x 21.45 x 19mm 6K/W - - Black - - - - -
RS Stock No. 712-4333
Mfr. Part No.573400D00010G
SGD3.17
Each (In a Pack of 5)
units
- 12.7mm 30.99mm 10.16mm 12.7 x 30.99 x 10.16mm 14°C/W PCB Surface Mount - - - - - - -
RS Stock No. 162-1238
Mfr. Part No.AH50600V05000FE
SGD59.41
Each
units
- 127mm 100mm 31mm 127 x 100 x 31mm 1.3°C/W Screw - - Heatsinks - Aluminium Power Resistor HS
RS Stock No. 712-4419
Mfr. Part No.0S568/50/B
SGD8.90
Each
units
- 50mm 54.5mm 37.1mm 50 x 54.5 x 37.1mm 3.91K/W Clip - Black - - - - -
RS Stock No. 674-4781
Mfr. Part No.ICK S 10x10x12,5
SGD4.53
Each
units
Universal Square Alu 10mm 10mm 12.5mm 10 x 10 x 12.5mm 26.3K/W Adhesive Foil, Conductive Foil - - - - - - -
RS Stock No. 123-5625
Mfr. Part No.SF-CHS-707012F
BrandSPREADFAST
SGD6.70
Each
units
Universal Square Ceramic 70mm 70mm 12mm 70 x 70 x 12mm 2.4 °C/W @ 400 lfm, 4.3 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Finned
RS Stock No. 722-6789
Mfr. Part No.ICK LED R 50,8 x 16,5
SGD15.58
Each
units
Universal Round Alu - - 16.51mm 50.8 (Dia.) x 16.51mm 10.17K/W Adhesive Foil, Conductive Foil 50.8mm Black - - - LED -
RS Stock No. 189-8628
Mfr. Part No.SK42-75-SA
SGD20.49
Each
units
Universal Rectangular Alu 75mm 200mm 25mm 75 x 200 x 25mm 1.4K/W - - Black - - Aluminium - -
RS Stock No. 893-5361
Mfr. Part No.C126-040-2VE
BrandOhmite
SGD8.515
Each (In a Pack of 100)
units
- 40mm 19.6mm 32.5mm 40 x 19.6 x 32.5mm - Clip - - - - Aluminium TO-126 C
RS Stock No. 880-5995
Mfr. Part No.579206B00000G
SGD5.61
Each
units
- 31mm 20.62mm 13.72mm 31 x 20.62 x 13.72mm - - - Black Through Hole Discrete Semiconductors Black Anodized Aluminium TO-66 5792
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