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. 189-8145
Mfr. Part No.SK129-38,1-STS-220
SGD5.22
Each
units
- 38.1mm 42mm 25mm 38.1 x 42 x 25mm 5K/W Clip - Black - - - - -
RS Stock No. 722-6824
Mfr. Part No.SK 572/50 SA
SGD25.60
Each
units
Universal Round Alu - - 50mm 85 (Dia.) x 50mm 1.3K/W Screw 85mm Black - - - LED -
RS Stock No. 674-4841
Mfr. Part No.ICK S R 32,5x10
SGD6.56
Each
units
Universal Round Alu - - 10mm 32.5 (Dia.) x 10mm 5.54K/W Adhesive Foil, Conductive Foil 32.5mm - - - - - -
RS Stock No. 184-6724
Mfr. Part No.SFH4501-11L
BrandSPREADFAST
SGD7.44
Each
units
Universal Square Alu 45mm 45mm 11mm 45 x 45 x 11mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
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. 123-5619
Mfr. Part No.SF-CHS-323206P
BrandSPREADFAST
SGD2.28
Each (In a Pack of 5)
units
Universal Square Ceramic 30.5mm 30.5mm 6mm 30.5 x 30.5 x 6mm 15.7 °C/W @ 400 lfm, 26.7 °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. 828-8744
Mfr. Part No.CPL8070-101
BrandMasterplug
SGD48.34
Each
units
CPL80 - - 70mm 83 (Dia.) x 70 (H)mm 1.3°C/W Clip 83mm Black - - - LED -
RS Stock No. 168-6346
Mfr. Part No.WA 203
BrandSeifert
SGD55.15
Each
units
Universal Rectangular Alu 1m 32mm 20mm - - - - Black - - - - -
RS Stock No. 189-8072
Mfr. Part No.SK100-50-SA
SGD11.43
Each
units
Universal Rectangular Alu 50mm 66mm 40mm 50 x 66 x 40mm 2.5K/W - - Black - - - - -
RS Stock No. 712-4396
Mfr. Part No.0S565/50/B
SGD7.63
Each
units
- 50mm 15mm 54mm 50 x 15 x 54mm 7.37K/W Clip - Black - - - - -
RS Stock No. 722-6791
Mfr. Part No.SK 578/20 SA
SGD8.85
Each
units
Universal Round Alu - - 20mm 60 (Dia.) x 20mm 2.4K/W Screw 60mm Black - - - LED -
RS Stock No. 750-0881
Mfr. Part No.BGA STD 015
SGD12.75
1 Bag of 5
Bag(s)
- 14mm 14mm 10mm 14 x 14 x 10mm 26.5K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 692-0626
Mfr. Part No.LA 9 150 24 V
SGD156.10
Each
units
Universal Rectangular Alu with fan 150mm 80mm 83mm 150 x 80 x 83mm 0.18K/W - - - - - - - -
RS Stock No. 789-8602
Mfr. Part No.PPN1000B
SGD9.43
Each
units
- 100mm 50mm 28mm 100 x 50 x 28mm 3.1°C/W Screw - Black - - - TO-220 -
RS Stock No. 507-5093
Mfr. Part No.OS146/B/100
SGD22.83
Each
units
Universal Rectangular Alu 100mm 66mm 40mm 100 x 66 x 40mm 1.8K/W - - Black - - - - -
RS Stock No. 467-567
Mfr. Part No.EBA19031-10CL+T710
BrandMalico
SGD7.84
Each
units
Clip 19mm 19mm 10mm 19 x 19 x 10mm 5.2K/W Clip - Black - - - - -
RS Stock No. 184-6741
Mfr. Part No.HS-DC-1/1-LFL-18
BrandSPREADFAST
SGD10.01
Each
units
1/1 Brick DC/DC Converter 120mm 62mm 20mm 120 x 62 x 20mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 184-6733
Mfr. Part No.HS-DC-1/4-HFL-11
BrandSPREADFAST
SGD8.02
Each
units
1/4 Brick DC/DC Converter 62mm 40mm 13mm 62 x 40 x 13mm - - - Black DC-DC Converters - Aluminium - HS
New
RS Stock No. 225-789
Mfr. Part No.MR-220B
SGD1.76
Each
units
- - - - - - - - - - - - - -
RS Stock No. 880-5783
Mfr. Part No.566010B03400G
SGD6,685.00
1 Pack of 5000
Pack(s)
- 30.99mm 25.4mm 12.7mm 25.4 x 12.19 x 30.99mm 11.5°C/W Vertical - Black Through Hole Discrete Semiconductors Black Anodized Aluminium SIP 5660
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