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. 123-5635
Mfr. Part No.SF-CHS-313110-PC
BrandSPREADFAST
TWD56.20
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. 123-5622
Mfr. Part No.SF-CHS-202003F
BrandSPREADFAST
TWD18.60
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. 184-6744
Mfr. Part No.HS-DC-1/1-HFC-12
BrandSPREADFAST
TWD230.00
Each
units
1/1 Brick DC/DC Converter 120mm 62mm 14mm 120 x 62 x 14mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 184-6745
Mfr. Part No.SFPLAS-6202-15P
BrandSPREADFAST
TWD115.00
Each
units
Universal Square Plastic 62mm 62mm 15mm 62 x 62 x 15mm - - - Black - - Plastic - -
RS Stock No. 867-0907
Mfr. Part No.SF-03-250-S
BrandSPREADFAST
TWD269.00
Each
units
Heat Pipe 250mm - - 3 x 250mm - - 3mm - - - Copper - SF
RS Stock No. 184-6722
Mfr. Part No.SFH4001-09L
BrandSPREADFAST
TWD164.00
Each
units
Universal Square Alu 40mm 40mm 9mm 40 x 40 x 9mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 184-6725
Mfr. Part No.SFH4501-21L
BrandSPREADFAST
TWD185.00
Each
units
Universal Square Alu 45mm 45mm 21mm 45 x 45 x 21mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 867-0913
Mfr. Part No.SF-04-200-S
BrandSPREADFAST
TWD261.00
Each
units
Heat Pipe 200mm - - 4 x 200mm - - 4mm - - - Copper - SF
RS Stock No. 184-6746
Mfr. Part No.SFPLAS-65x62-11L
BrandSPREADFAST
TWD134.00
Each
units
Universal Rectangular Plastic 65.1mm 62mm 11.2mm 65.1 x 62 x 11.2mm - - - Black - - Plastic - -
RS Stock No. 184-6731
Mfr. Part No.HS-DC-1/4-LFL-20
BrandSPREADFAST
TWD185.00
Each
units
1/4 Brick DC/DC Converter 62mm 40mm 22mm 62 x 40 x 22mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 123-5640
Mfr. Part No.SF-CHS-606015-PC
BrandSPREADFAST
TWD229.00
Each
units
Universal Square Ceramic 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. 867-0890
Mfr. Part No.SF-03-100-S
BrandSPREADFAST
TWD296.00
Each
units
Heat Pipe 100mm - - 3 x 100mm - - 3mm - - - Copper - SF
RS Stock No. 184-6720
Mfr. Part No.SFH3501-09L
BrandSPREADFAST
TWD152.00
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. 123-5631
Mfr. Part No.SF-CHS-191906-PC
BrandSPREADFAST
TWD32.00
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. 867-0916
Mfr. Part No.SF-04-100-S
BrandSPREADFAST
TWD243.00
Each
units
Heat Pipe 100mm - - 4 x 100mm - - 4mm - - - Copper - SF
RS Stock No. 123-5623
Mfr. Part No.SF-CHS-252503F
BrandSPREADFAST
TWD32.00
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. 123-5626
Mfr. Part No.SF-CHS-757506F
BrandSPREADFAST
TWD169.00
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. 867-0929
Mfr. Part No.SF-06-100-S
BrandSPREADFAST
TWD325.00
Each
units
Heat Pipe 100mm - - 6 x 100mm - - 6mm - - - Copper - SF
RS Stock No. 123-5638
Mfr. Part No.SF-CHS-454512-PC
BrandSPREADFAST
TWD143.00
Each
units
Universal Square Ceramic 45mm 45mm 12mm 45 x 45 x 12mm 5.3 °C/W @ 400 lfm, 9.9 °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. 123-5620
Mfr. Part No.SF-CHS-434306P
BrandSPREADFAST
TWD88.00
Each
units
Universal Square Ceramic 43mm 43mm 6mm 43 x 43 x 6mm 13.2 °C/W @ 400 lfm, 22.4 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Pin Fin