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. 867-0922
Mfr. Part No.SF-05-150-S
BrandSPREADFAST
£6.38
Each
Units
- 150mm - - 5 x 150mm - - 5mm - - - Copper - SF
RS Stock No. 867-0890
Mfr. Part No.SF-03-100-S
BrandSPREADFAST
£5.52
Each
Units
- 100mm - - 3 x 100mm - - 3mm - - - Copper - SF
RS Stock No. 867-0935
Mfr. Part No.SF-06-300-S
BrandSPREADFAST
£7.49
Each
Units
- 300mm - - 6 x 300mm - - 6mm - - - Copper - SF
RS Stock No. 867-0931
Mfr. Part No.SF-06-200-S
BrandSPREADFAST
£6.81
Each
Units
- 200mm - - 6 x 200mm - - 6mm - - - Copper - SF
RS Stock No. 123-5629
Mfr. Part No.SF-CHS-151506-PC
BrandSPREADFAST
£0.72
Each (In a Pack of 5)
Units
- 15mm 15mm 6mm 15 x 15 x 6mm 29.5 °C/W @ 400 lfm, 52.5 °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. 867-0950
Mfr. Part No.SF-08-350-S
BrandSPREADFAST
£11.17
Each
Units
- 350mm - - 8 x 350mm - - 8mm - - - Copper - SF
RS Stock No. 123-5624
Mfr. Part No.SF-CHS-555506F
BrandSPREADFAST
£2.26
Each
Units
- 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. 123-5622
Mfr. Part No.SF-CHS-202003F
BrandSPREADFAST
£0.54
Each (In a Pack of 5)
Units
- 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. 123-5628
Mfr. Part No.SF-CHS-131306-PC
BrandSPREADFAST
£0.64
Each (In a Pack of 5)
Units
- 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. 867-0938
Mfr. Part No.SF-06-150-S
BrandSPREADFAST
£6.38
Each
Units
- 150mm - - 6 x 150mm - - 6mm - - - Copper - SF
RS Stock No. 867-0953
Mfr. Part No.SF-10-150-S
BrandSPREADFAST
£8.38
Each
Units
- 150mm - - 10 x 150mm - - 10mm - - - Copper - SF
RS Stock No. 123-5617
Mfr. Part No.SF-CHS-202006P
BrandSPREADFAST
£0.78
Each (In a Pack of 5)
Units
- 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. 123-5625
Mfr. Part No.SF-CHS-707012F
BrandSPREADFAST
£3.90
Each
Units
- 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. 123-5618
Mfr. Part No.SF-CHS-303006P
BrandSPREADFAST
£1.28
Each (In a Pack of 5)
Units
- 30mm 30mm 6mm 30 x 30 x 6mm 23.7 °C/W @ 400 lfm, 40.0 °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. 867-0947
Mfr. Part No.SF-08-200-S
BrandSPREADFAST
£9.36
Each
Units
- 200mm - - 8 x 200mm - - 8mm - - - Copper - SF
RS Stock No. 123-5623
Mfr. Part No.SF-CHS-252503F
BrandSPREADFAST
£0.92
Each (In a Pack of 5)
Units
- 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. 867-0969
Mfr. Part No.SF-12-300-S
BrandSPREADFAST
£18.91
Each
Units
- 300mm - - 12 x 300mm - - 12mm - - - Copper - SF
RS Stock No. 123-5640
Mfr. Part No.SF-CHS-606015-PC
BrandSPREADFAST
£5.38
Each
Units
- 60mm 60mm 15mm 60 x 60 x 15mm 2.6 °C/W @ 400 lfm, 4.7 °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
£4.26
Each
Units
- 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. 123-5627
Mfr. Part No.SF-CHS-858506F
BrandSPREADFAST
£5.64
Each
Units
- 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