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. 184-6726
Mfr. Part No.HS-DC-1/8-LFL-20
BrandSPREADFAST
TWD116.00
Each
units
1/8 Brick DC/DC Converter 62mm 25mm 20mm 62 x 25 x 20mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 234-2407
Mfr. Part No.PPC0350BP
TWD78.00
Each
units
- 35mm 16mm 27mm 35 x 16 x 27mm 9°C/W Clip - Black - - - - -
RS Stock No. 658-025
Mfr. Part No.173AB2500B
TWD2,026.00
Each
units
Universal Rectangular Alu 250mm 119mm 63mm 250 x 119 x 63mm 0.5K/W - - Black - - Aluminium - -
RS Stock No. 189-9261
Mfr. Part No.FK214SACB
TWD34.00
Each
units
- 30mm 25.4mm 13mm 30 x 25.4 x 13mm 15K/W - - Black - Black Anodized Plastic - -
RS Stock No. 271-858
Mfr. Part No.345AB0750B
TWD450.00
Each
units
Universal Rectangular Alu 75mm 120mm 37mm 75 x 120 x 37mm 1.2K/W - - Black - - Aluminium - -
RS Stock No. 507-4898
Mfr. Part No.EM/B/150
TWD1,588.00
Each
units
Universal Rectangular Alu 150mm 200mm 40mm 150 x 200 x 40mm 0.48K/W - - Black - - Aluminium - -
RS Stock No. 169-9780
Mfr. Part No.WA208 14
BrandSeifert
TWD381.00
Each
units
- 75mm 54mm 31.6mm 75 x 54 x 31.6mm 2.2K/W - - Black - - - TO-3 -
RS Stock No. 750-0951
Mfr. Part No.BGA STD 115
TWD82.00
Each
units
- 40mm 40mm 18mm 40 x 40 x 18mm 8.2K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 123-5634
Mfr. Part No.SF-CHS-272710-PC
BrandSPREADFAST
TWD44.00
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. 489-6035
Mfr. Part No.MBH27002-12P/2.6
BrandMalico
TWD310.00
Each
units
Clip 27mm 27mm 12mm 27 x 27 x 12mm - Clip - Black - - - - -
RS Stock No. 104-092
Mfr. Part No.637303B03000
TWD1,381.00
Each
units
Universal Square Alu 76.1mm 76.1mm 57.15mm 76.1 x 57.15 x 76.1mm 1.88°C/W - - Black - Black Anodized Aluminium LED -
RS Stock No. 722-6820
Mfr. Part No.SK 572/25 SA
TWD396.00
Each
units
Universal Round Alu - - 25mm 85 (Dia.) x 25mm 2.6K/W Screw 85mm Black - - - LED -
RS Stock No. 189-8628
Mfr. Part No.SK42-75-SA
TWD550.00
Each
units
Universal Rectangular Alu 75mm 200mm 25mm 75 x 200 x 25mm 1.4K/W - - Black - - Aluminium - -
RS Stock No. 722-6870
Mfr. Part No.SK 480/37,5 SA
TWD71.00
Each
units
- 37.5mm 28mm 10.3mm 37.5 x 28 x 10.3mm 11K/W Clip - Black - - - - -
RS Stock No. 184-6714
Mfr. Part No.SFH1901-06L
BrandSPREADFAST
TWD116.00
Each
units
Universal Square Alu 19mm 19mm 6mm 19 x 19 x 6mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 903-3090
Mfr. Part No.122AB2000B
TWD1,156.00
Each
units
Universal Square Alu 200mm 200mm 15mm 200 x 200 x 15mm 0.23°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 221-2182
Mfr. Part No.SK76-50-TO220
TWD77.00
Each
units
- 32mm 20mm 50mm 50 x 32 x 20mm 6K/W Screw - Black - Black Anodized - TO-220 -
RS Stock No. 674-4800
Mfr. Part No.ICK S 32x32x10
TWD350.00
Each
units
Universal Square Alu 32.7mm 32.7mm 10mm 32.7 x 32.7 x 10mm 5.4K/W Adhesive Foil, Conductive Foil - - - - Aluminium - -
RS Stock No. 867-0931
Mfr. Part No.SF-06-200-S
BrandSPREADFAST
TWD281.00
Each
units
Heat Pipe 200mm - - 6 x 200mm - - 6mm - - - Copper - SF
RS Stock No. 722-6785
Mfr. Part No.ICK LED R 23,5 x 14 G
TWD404.00
Each
units
Universal Round Alu - - 14mm 23.5 (Dia.) x 14mm 19.16K/W Adhesive Foil, Conductive Foil 23.5mm Black - - - LED -