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. 400-012
Mfr. Part No.190AB1500B
SGD33.58
Each
units
Universal Rectangular Alu 150mm 175mm 30mm 150 x 175 x 30mm 1.6K/W - - Black - - - - -
RS Stock No. 722-6827
Mfr. Part No.SK 571/25 SA
SGD7.42
Each
units
Universal Round Alu - - 25mm 70 (Dia.) x 25mm 2.6K/W Screw 70mm Black - - - LED -
RS Stock No. 123-5621
Mfr. Part No.SF-CHS-606015P
BrandSPREADFAST
SGD9.74
Each
units
Universal Square Ceramic 60mm 60mm 15mm 60 x 60 x 15mm 2.4 °C/W @ 400 lfm, 5.2 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Pin Fin
RS Stock No. 127-0216
Mfr. Part No.MMP-0143
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 - Purple Broadcom, Ethernet SOCs Purple Anodised Aluminium SOC MMP
RS Stock No. 903-3100
Mfr. Part No.177AB1000B
SGD92.19
Each
units
Universal Rectangular Alu 100mm 300mm 83mm 100 x 300 x 83mm 0.12°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 698-8101
Mfr. Part No.FK 244 08 D PAK
SGD1.44
Each (In a Pack of 5)
units
- 23mm 8mm 10mm 23 x 8 x 10mm 31.5K/W Solder - Silver - - - - -
RS Stock No. 184-6738
Mfr. Part No.HS-DC-1/2-HFL-9
BrandSPREADFAST
SGD5.06
Each
units
1/2 Brick DC/DC Converter 62mm 60mm 10mm 62 x 60 x 10mm - - - Black DC-DC Converters - Aluminium - 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. 184-6737
Mfr. Part No.HS-DC-1/2-LFC-17
BrandSPREADFAST
SGD6.76
Each
units
1/2 Brick DC/DC Converter 62mm 60mm 20mm 62 x 60 x 20mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 2508958856
Mfr. Part No.NTE439
SGD0.92
Each
units
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RS Stock No. 2509067901
Mfr. Part No.MAX01-HG
SGD0.39
Each
units
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RS Stock No. 2508344294
Mfr. Part No.825902B05300
SGD1.38
Each
units
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RS Stock No. 2509005048
Mfr. Part No.577102B04000G
SGD0.64
Each
units
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RS Stock No. 2509067670
Mfr. Part No.577002B04000G
SGD1.01
Each
units
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RS Stock No. 2509067939
Mfr. Part No.MAX03-HG
SGD0.50
Each
units
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RS Stock No. 2508958840
Mfr. Part No.NTE438
SGD1.10
Each
units
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RS Stock No. 2508958828
Mfr. Part No.NTE415
SGD1.10
Each
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