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. 780-5893
Mfr. Part No.ILA-HSINK-STAR-50X20MM-BLK-K
£10.32
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 20mm 50 (Dia.) x 20mm - Screw 50mm Black - - - - -
RS Stock No. 920-9546
Mfr. Part No.ILA-EXTRUSION-02-0315x40-BLK.
£8.75
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 880-1943
Mfr. Part No.ILA-EXTRUSION-01-0150.
£2.376
Each (In a Pack of 5)
Units
- 150mm - - - - - - - - - - - -
RS Stock No. 780-5928
Mfr. Part No.ILA-HSINK-STAR-50X60MM-BLK-K
£18.25
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 60mm 50 (Dia.) x 60mm - Screw 50mm Black - - - - -
RS Stock No. 920-9433
Mfr. Part No.ILA-HSINK-RADL-70X70MM-BLK
£23.59
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 780-5953
Mfr. Part No.ILA-HSINK-70X70X55MM-BLK-K
£19.50
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 70mm 70mm 55mm 70 x 70 x 55mm - Screw - Black - - - - -
RS Stock No. 780-5950
Mfr. Part No.ILA-HSINK-70X70X55MM-RED-K
£17.56
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 70mm 70mm 55mm 70 x 70 x 55mm - Screw - Red - - - - -
RS Stock No. 780-5962
Mfr. Part No.ILA-HSINK-78X46X25MM-BLK-K
£13.90
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 78mm 46mm 25mm 78 x 46 x 25mm - Screw - Black - - - - -
RS Stock No. 780-5956
Mfr. Part No.ILA-HSINK-70X70X55MM-BLU-K
£19.50
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 70mm 70mm 55mm 70 x 70 x 55mm - Screw - Blue - - - - -
RS Stock No. 780-5938
Mfr. Part No.ILA-HSINK-STAR-50X80MM-BLK-K
£22.21
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 80mm 50 (Dia.) x 80mm - Screw 50mm Black - - - - -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
£36.36
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 780-5934
Mfr. Part No.ILA-HSINK-STAR-50X60MM-SVR-K
£18.25
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 60mm 50 (Dia.) x 60mm - Screw 50mm Silver - - - - -
RS Stock No. 780-5925
Mfr. Part No.ILA-HSINK-STAR-50X40MM-SVR-K
£14.32
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 40mm 50 (Dia.) x 40mm - Screw 50mm Silver - - - - -
RS Stock No. 920-9436
Mfr. Part No.ILA-HSINK-RADL-55X20MM-BLK
£11.83
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 920-9420
Mfr. Part No.ILA-HSINK-RADL-100X65MM-BLK
£23.59
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 920-9427
Mfr. Part No.ILA-HSINK-RADL-120X150MM-BLK
£33.21
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 920-9439
Mfr. Part No.ILA-HSINK-RADL-70X20MM-BLK
£11.06
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 780-5969
Mfr. Part No.ILA-HSINK-70X70X55MM-SVR-K
£19.50
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 70mm 70mm 55mm 70 x 70 x 55mm - Screw - Silver - - - - -
RS Stock No. 780-5978
Mfr. Part No.ILA-HSINK-78X46X25MM-SVR-K
£12.14
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 16+ PowerStar, OSLON 4+ PowerStar, OSLON 9+ Powerstar, Stanley 1 PowerStar, Stanley 4 PowerCluster 78mm 46mm 25mm 78 x 46 x 25mm - Screw - Silver - - - - -
RS Stock No. 780-5919
Mfr. Part No.ILA-HSINK-STAR-50X40MM-BLK-K
£14.32
Each
Units
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 40mm 50 (Dia.) x 40mm - Screw 50mm Black - - - - -