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. 169-4347
Mfr. Part No.ICKPGA 21X21
SGD5.07
Each
units
Universal Square Alu 53.3mm 53.3mm 16.5mm 53.3 x 53.3 x 16.5mm 7K/W Adhesive Foil, Conductive Foil - Black - - - PGA -
RS Stock No. 712-4263
Mfr. Part No.ML33
SGD1.524
Each (In a Pack of 5)
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- 36mm 38mm 20mm 36 x 38 x 20mm 8.5°C/W Screw - Black - - - TO-218, TO-220 -
RS Stock No. 489-6170
Mfr. Part No.MBH45001-15W/2.6
BrandMalico
SGD11.99
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Clip 45mm 45mm 15mm 45 x 45 x 15mm - Clip - Black - - - - -
RS Stock No. 698-8114
Mfr. Part No.FK 244 08 D3 PAK
SGD2.03
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- 31mm 18mm 10mm 31 x 8 x 10mm 26K/W Solder - Silver - - - - -
RS Stock No. 184-6738
Mfr. Part No.HS-DC-1/2-HFL-9
BrandSPREADFAST
SGD5.06
Each
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1/2 Brick DC/DC Converter 62mm 60mm 10mm 62 x 60 x 10mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 560-224
Mfr. Part No.HAF-15L
BrandTDK-Lambda
SGD29.67
Each
units
1/1 Brick AC/DC Converter, PFE 116.8mm 61mm 38.1mm 116.8 x 61 x 38.1mm 1.9K/W - - Black - - - - -
RS Stock No. 880-5566
Mfr. Part No.531002C00000
SGD13,725.87
1 Pack of 10000
Pack(s)
- 12.7mm 34.92mm 25.4mm - 13.4°C/W - - - - Gold Chromate Aluminium TO-218 -
RS Stock No. 189-8836
Mfr. Part No.SK04-100-SA
SGD8.41
Each
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- 100mm 97mm 25mm 100 x 97 x 25mm 1.5K/W - - Black - - - - -
RS Stock No. 674-4715
Mfr. Part No.SK454 -50SA
SGD1.41
Each
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- 50mm 21.45mm 19mm 50 x 21.45 x 19mm 8.5K/W - - Black - - - - -
RS Stock No. 2509067939
Mfr. Part No.MAX03-HG
SGD0.50
Each
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RS Stock No. 2509067670
Mfr. Part No.577002B04000G
SGD1.01
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RS Stock No. 2508344294
Mfr. Part No.825902B05300
SGD1.38
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RS Stock No. 2508958828
Mfr. Part No.NTE415
SGD1.10
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RS Stock No. 2508958840
Mfr. Part No.NTE438
SGD1.10
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RS Stock No. 2509005048
Mfr. Part No.577102B04000G
SGD0.64
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RS Stock No. 2508958856
Mfr. Part No.NTE439
SGD0.92
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RS Stock No. 2509067901
Mfr. Part No.MAX01-HG
SGD0.39
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