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. 698-8127
Mfr. Part No.FK 250 08 LF PAK
MYR4.398
Each (In a Pack of 5)
units
- 15mm 8mm 8mm 15 x 8 x 8mm 34.8K/W Solder - Silver - - - - -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
MYR45.80
1 Bag of 5
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 722-6791
Mfr. Part No.SK 578/20 SA
MYR30.42
Each
units
Universal Round Alu - - 20mm 60 (Dia.) x 20mm 2.4K/W Screw 60mm Black - - - LED -
RS Stock No. 867-9039
Mfr. Part No.RPI-COOLINGKIT.9
MYR25.81
Each
units
Banana Pi BPI-M1, Banana Pi BPI-M1+, Banana Pi BPI-M2 Berry, Banana Pi BPI-M2+, Raspberry Pi® 2 B, Raspberry Pi® 3 A+, Raspberry Pi® 3 B, Raspberry Pi® 3 B+, Raspberry Pi® 4 B, Raspberry Pi® A, Raspberry Pi® A+, Raspberry Pi® B, Raspberry Pi® B+ 8.5 mm, 19 mm 6.35 mm, 19 mm 5mm - - - - Black - - - - -
RS Stock No. 903-3096
Mfr. Part No.122AB1500B
MYR119.70
Each
units
Universal Rectangular Alu 150mm 200mm 15mm 150 x 200 x 15mm 0.29°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 189-8460
Mfr. Part No.SK64-37,5-SA-1M3
MYR28.48
Each
units
- 37.5mm 70mm 25mm 37.5 x 70 x 25mm 4.1K/W Screw - Black - - - - -
RS Stock No. 903-3103
Mfr. Part No.177AB1500B
MYR412.22
Each
units
Universal Rectangular Alu 150mm 300mm 83mm 150 x 300 x 83mm 0.09°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 698-8108
Mfr. Part No.ICK BGA 35x35
MYR5.70
Each
units
Universal Square Alu 35mm 35mm 6mm 35 x 35 x 6mm 16.5K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 263-245
BrandRS PRO
MYR3.08
Each (In a Pack of 10)
units
- 25.4mm 20.3mm 6.81mm 25.4 x 20.3 x 6.81mm 24°C/W Clip - - - - - TO-220 -
RS Stock No. 360-8809
Mfr. Part No.KL 112.25.A SW
BrandSchaffner
MYR11.47
Each
units
- 25mm 11mm 16mm 25 x 11 x 16mm 18K/W Screw - Black - - - TO-220 -
RS Stock No. 189-9025
Mfr. Part No.ICK24B
MYR4.11
Each
units
Universal Rectangular Alu 33mm 19mm 4.8mm 33 x 19 x 4.8mm 13K/W - - Black - - - DIL-IC -
RS Stock No. 712-4327
Mfr. Part No.592502B03400G
MYR3.322
Each (In a Pack of 5)
units
- 6.35mm 22.2mm 31.75mm 6.35 x 22.2 x 31.75mm 22°C/W Tab, Twisted Fin - Black - Black Anodized - TO-220 -
RS Stock No. 780-5938
Mfr. Part No.ILA-HSINK-STAR-50X80MM-BLK-K
MYR152.62
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 16, Oslon 4, Oslon 9, Stanley 1, Stanley 4 - - 80mm 50 (Dia.) x 80mm - Screw 50mm Black - - - LED -
RS Stock No. 722-6903
Mfr. Part No.SK 574/84 SA
MYR24.04
Each
units
- 84mm 32.3mm 28mm 84 x 32.3 x 28mm 4K/W Clip - Black - - - - -
RS Stock No. 234-2457
Mfr. Part No.159AB1500B
MYR158.61
Each
units
Universal Rectangular Alu 150mm 160mm 40mm 150 x 160 x 40mm 0.65K/W - - Black - - - - -
RS Stock No. 268-127
Mfr. Part No.KL-50-B
MYR35.69
Each
units
- 50mm 50mm 28mm 50 x 50 x 28mm 5.1°C/W Clip - - - - - TO-220 -
RS Stock No. 692-5100
Mfr. Part No.730AB1000B
MYR105.19
Each
units
Universal Rectangular Alu 100mm 114.3mm 114.3mm 100 x 114.3 x 114.3mm 0.75K/W - - Black - - - - -
RS Stock No. 903-3150
Mfr. Part No.113AB1000B
MYR93.15
Each
units
Universal Rectangular Alu 100mm 150mm 25mm 100 x 150 x 25mm 0.54°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
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. 789-8570
Mfr. Part No.350AB2500B
MYR135.90
Each
units
Universal Rectangular Alu 250mm 125mm 50mm 250 x 125 x 50mm 0.5°C/W - - Black - - - - -