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. 123-5616
Mfr. Part No.SF-CHS-121210P
BrandSPREADFAST
MYR3.21
Each (In a Pack of 5)
units
Universal Square Ceramic 43mm 43mm 6mm 12 x 12 x 10mm 12.2 °C/W @ 100 lfm, 7.5 °C/W @ 400 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Pin Fin
RS Stock No. 867-0890
Mfr. Part No.SF-03-100-S
BrandSPREADFAST
MYR37.95
Each
units
Heat Pipe 100mm - - 3 x 100mm - - 3mm - - - Copper - SF
RS Stock No. 867-0919
Mfr. Part No.SF-04-150-S
BrandSPREADFAST
MYR32.21
Each
units
Heat Pipe 150mm - - 4 x 150mm - - 4mm - - - Copper - SF
RS Stock No. 123-5636
Mfr. Part No.SF-CHS-353510-PC
BrandSPREADFAST
MYR10.83
Each
units
Universal Square Ceramic 35mm 35mm 10mm 35 x 35 x 10mm 15.4 °C/W @ 100 lfm, 7.7 °C/W @ 400 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Circular Pin Fin
RS Stock No. 867-0953
Mfr. Part No.SF-10-150-S
BrandSPREADFAST
MYR57.56
Each
units
Heat Pipe 150mm - - 10 x 150mm - - 10mm - - - Copper - SF
RS Stock No. 123-5630
Mfr. Part No.SF-CHS-171706-PC
BrandSPREADFAST
MYR4.06
Each (In a Pack of 5)
units
Universal Square Ceramic 17mm 17mm 6mm 17 x 17 x 6mm 23.2 °C/W @ 400 lfm, 43.3 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - Aluminium Oxide - Ceramic Heat Spreader Circular Pin Fin
RS Stock No. 184-6716
Mfr. Part No.SFH2501-07L
BrandSPREADFAST
MYR16.94
Each
units
Universal Square Alu 25mm 25mm 7mm 25 x 25 x 7mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 123-5624
Mfr. Part No.SF-CHS-555506F
BrandSPREADFAST
MYR10.58
Each
units
Universal Square Ceramic 55mm 55mm 6mm 55 x 55 x 6mm 10.4 °C/W @ 100 lfm, 6.2 °C/W @ 400 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Finned
RS Stock No. 184-6723
Mfr. Part No.SFH4001-21L
BrandSPREADFAST
MYR22.55
Each
units
Universal Square Alu 40mm 40mm 21mm 40 x 40 x 21mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 123-5627
Mfr. Part No.SF-CHS-858506F
BrandSPREADFAST
MYR30.91
Each
units
Universal Square Ceramic 85mm 85mm 6mm 85 x 85 x 6mm 3.1 °C/W @ 400 lfm, 5.8 °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. 184-6721
Mfr. Part No.SFH3501-16L
BrandSPREADFAST
MYR20.68
Each
units
Universal Square Alu 35mm 35mm 16mm 35 x 35 x 16mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 867-0900
Mfr. Part No.SF-03-150-S
BrandSPREADFAST
MYR31.08
Each
units
Heat Pipe 150mm - - 3 x 150mm - - 3mm - - - Copper - SF
RS Stock No. 123-5631
Mfr. Part No.SF-CHS-191906-PC
BrandSPREADFAST
MYR4.49
Each (In a Pack of 5)
units
Universal Square Ceramic 19mm 19mm 6mm 19 x 19 x 6mm 20.3 °C/W @ 400 lfm, 38.7 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Circular Pin Fin
RS Stock No. 123-5626
Mfr. Part No.SF-CHS-757506F
BrandSPREADFAST
MYR22.16
Each
units
Universal Square Ceramic 75mm 75mm 6mm 75 x 75 x 6mm 4 °C/W @ 400 lfm, 7.2 °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. 184-6730
Mfr. Part No.HS-DC-1/8-HFC-9
BrandSPREADFAST
MYR17.41
Each
units
1/8 Brick DC/DC Converter 62mm 25mm 10mm 62 x 25 x 10mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 867-0938
Mfr. Part No.SF-06-150-S
BrandSPREADFAST
MYR34.49
Each
units
Heat Pipe 150mm - - 6 x 150mm - - 6mm - - - Copper - SF
RS Stock No. 184-6717
Mfr. Part No.SFH2501-11L
BrandSPREADFAST
MYR17.61
Each
units
Universal Square Alu 25mm 25mm 11mm 25 x 25 x 11mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 184-6729
Mfr. Part No.HS-DC-1/8-HFL-9
BrandSPREADFAST
MYR13.61
Each
units
1/8 Brick DC/DC Converter 62mm 25mm 10mm 62 x 25 x 10mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 184-6720
Mfr. Part No.SFH3501-09L
BrandSPREADFAST
MYR19.48
Each
units
Universal Square Alu 35mm 35mm 9mm 35 x 35 x 9mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 867-0944
Mfr. Part No.SF-08-150-S
BrandSPREADFAST
MYR49.51
Each
units
Heat Pipe 150mm - - 8 x 150mm - - 8mm - - - Copper - SF