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. 867-9039
Mfr. Part No.RPI-COOLINGKIT.9
R 81.20
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. 750-0888
Mfr. Part No.BGA STD 010
R 13.18
Each (In a Bag of 5)
units
- 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS stock no. 268-082
Mfr. Part No.PF436G
R 11.95
Each (In a Pack of 5)
units
- 19.5mm 12.7mm 13mm 19.5 x 12.7 x 13mm 25°C/W Solder - Black - - - TO-220, TO-262 -
RS stock no. 674-4756
Mfr. Part No.ICK BGA 14x14x10
R 24.51
Each
units
Universal Square Alu 14mm 14mm 10mm 14 x 14 x 10mm 27.4K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS stock no. 189-9154
Mfr. Part No.FK201SACB
R 21.37
Each
units
- 45mm 45mm 25.4mm 45 x 45 x 25.4mm 6K/W Screw - Black - - - - -
RS stock no. 268-105
Mfr. Part No.400020
R 16.662
Each (In a Pack of 5)
units
- 19mm 22mm 19mm 11 x 22 x 19mm 23°C/W PCB Through Hole - - - - - TO-220 -
RS stock no. 750-0908
Mfr. Part No.BGA STD 050
R 18.65
Each (In a Bag of 5)
units
- 20mm 20mm 19.1mm 20 x 20 x 19.1mm 14K/W Adhesive Foil - Black - - - BGA -
RS stock no. 722-6915
Mfr. Part No.SK 487/37,5 SA
R 51.23
Each
units
- 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS stock no. 674-4747
Mfr. Part No.ICK BGA 10x10x10
R 24.38
Each
units
Universal Square Alu 10mm 10mm 10mm 10 x 10 x 10mm 28.5K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS stock no. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
R 551.32
Each
units
- 190mm 90mm 50mm - - - - - - - - LED Array -
RS stock no. 674-4759
Mfr. Part No.ICK BGA 27x27x10
R 17.96
Each
units
Universal Square Alu 27mm 27mm 10mm 27 x 27 x 10mm 18.5K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS stock no. 126-3113
Mfr. Part No.FIT0504
BrandDFRobot
R 237.19
Each
units
LattePanda 34.5mm 34.5mm 10mm 34.5 x 34.5 x 10mm - PCB Surface Mount, Screw - Blue - - Aluminium - -
RS stock no. 712-4257
Mfr. Part No.ML7G
R 5.862
Each (In a Pack of 5)
units
- 19mm 20mm 8.8mm 19 x 20 x 8.8mm 24°C/W Screw - Black - - - TO-220 -
RS stock no. 780-5893
Mfr. Part No.ILA-HSINK-STAR-50X20MM-BLK-K
R 204.78
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 4, Stanley 1, Stanley 4 - - 20mm 50 (Dia.) x 20mm - Screw 50mm Black - - - LED -
RS stock no. 722-6896
Mfr. Part No.SK 574/25 SA
R 29.91
Each
units
- 25mm 32.3mm 28mm 25 x 32.3 x 28mm 7.5K/W Clip - Black - - - - -
RS stock no. 722-6892
Mfr. Part No.SK 481/84 SA
R 65.61
Each
units
- 84mm 30mm 45mm 84 x 30 x 45mm 3K/W Clip - Black - - - - -
RS stock no. 221-2176
Mfr. Part No.SK76-37,5-TO220
R 28.60
Each
units
- 37.5mm 32mm 20mm 37.5 x 32 x 20mm 8K/W Screw - Black - - - TO-220 -
RS stock no. 698-8098
Mfr. Part No.ICK BGA 14x14
R 29.43
Each
units
Universal Square Alu 14mm 14mm 6mm 14 x 14 x 6mm 29K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS stock no. 234-2334
Mfr. Part No.LS220
R 20.82
Each
units
- 30.2mm 30mm 13mm 30.2 x 30 x 13mm 17°C/W Clip, Screw - Black - - - TO-218, TO-220 -
RS stock no. 189-9132
Mfr. Part No.FK231SA220
R 10.21
Each
units
- 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - TO-220 -