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. 123-5617
Mfr. Part No.SF-CHS-202006P
BrandSPREADFAST
$1.47
Each (In a Pack of 5)
units
Universal Square Ceramic 12.35mm 12.35mm 10mm 20 x 20 x 6mm 18.5 °C/W @ 400 lfm, 37.8 °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. 123-5634
Mfr. Part No.SF-CHS-272710-PC
BrandSPREADFAST
$3.272
Each (In a Pack of 5)
units
Universal Square Ceramic 27mm 27mm 10mm 27 x 27 x 10mm 7.2 °C/W @ 400 lfm, 15.6 °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. 867-0969
Mfr. Part No.SF-12-300-S
BrandSPREADFAST
$41.72
Each
units
Heat Pipe 300mm - - 12 x 300mm - - 12mm - - - Copper - SF
RS Stock No. 123-5624
Mfr. Part No.SF-CHS-555506F
BrandSPREADFAST
$3.73
Each
units
Universal Square Ceramic 55mm 55mm 6mm 55 x 55 x 6mm 6.2 °C/W @ 400 lfm, 10.4 °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. 123-5619
Mfr. Part No.SF-CHS-323206P
BrandSPREADFAST
$2.972
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. 123-5626
Mfr. Part No.SF-CHS-757506F
BrandSPREADFAST
$9.18
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. 123-5622
Mfr. Part No.SF-CHS-202003F
BrandSPREADFAST
$1.42
Each (In a Pack of 5)
units
Universal Square Ceramic 20mm 20mm 2.5mm 20 x 20 x 2.5mm 43 °C/W @ 400 lfm, 58.2 °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. 867-0966
Mfr. Part No.SF-12-150-S
BrandSPREADFAST
$38.83
Each
units
Heat Pipe 150mm - - 12 x 150mm - - 12mm - - - Copper - SF
RS Stock No. 123-5627
Mfr. Part No.SF-CHS-858506F
BrandSPREADFAST
$12.14
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. 867-0907
Mfr. Part No.SF-03-250-S
BrandSPREADFAST
$13.73
Each
units
Heat Pipe 250mm - - 3 x 250mm - - 3mm - - - Copper - SF
RS Stock No. 123-5623
Mfr. Part No.SF-CHS-252503F
BrandSPREADFAST
$1.982
Each (In a Pack of 5)
units
Universal Square Ceramic 25mm 25mm 2.5mm 25 x 25 x 2.5mm 31.5 °C/W @ 400 lfm, 45.4 °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. 867-0900
Mfr. Part No.SF-03-150-S
BrandSPREADFAST
$10.94
Each
units
Heat Pipe 150mm - - 3 x 150mm - - 3mm - - - Copper - SF
RS Stock No. 867-0890
Mfr. Part No.SF-03-100-S
BrandSPREADFAST
$12.19
Each
units
Heat Pipe 100mm - - 3 x 100mm - - 3mm - - - Copper - SF
RS Stock No. 123-5630
Mfr. Part No.SF-CHS-171706-PC
BrandSPREADFAST
$1.47
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. 867-0957
Mfr. Part No.SF-10-250-S
BrandSPREADFAST
$15.85
Each
units
Heat Pipe 250mm - - 10 x 250mm - - 10mm - - - Copper - SF
RS Stock No. 123-5616
Mfr. Part No.SF-CHS-121210P
BrandSPREADFAST
$1.422
Each (In a Pack of 5)
units
Universal Square Ceramic 43mm 43mm 6mm 12 x 12 x 10mm 7.5 °C/W @ 400 lfm, 12.2 °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. 123-5625
Mfr. Part No.SF-CHS-707012F
BrandSPREADFAST
$8.40
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. 123-5628
Mfr. Part No.SF-CHS-131306-PC
BrandSPREADFAST
$1.60
Each (In a Pack of 5)
units
Universal Square Ceramic 13mm 13mm 6mm 13 x 13 x 6mm 33.4 °C/W @ 400 lfm, 58.9 °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. 123-5635
Mfr. Part No.SF-CHS-313110-PC
BrandSPREADFAST
$2.82
Each (In a Pack of 5)
units
Universal Square Ceramic 31mm 31mm 10mm 31 x 31 x 10mm 7.2 °C/W @ 400 lfm, 14.6 °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. 867-0944
Mfr. Part No.SF-08-150-S
BrandSPREADFAST
$18.81
Each
units
Heat Pipe 150mm - - 8 x 150mm - - 8mm - - - Copper - SF