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’.


...
Read more Read less

Filters

Viewing 1 - 20 of 118 products
Results per page
Description Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 403-184
Mfr. Part No.437874
TWD35.00
Each (In a Pack of 10)
units
- 50mm 34.5mm 50mm 12.5 x 34.5 x 50mm 8.8K/W Solder - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 268-105
Mfr. Part No.400020
TWD39.80
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. 104-036
Mfr. Part No.306216
TWD80.00
Each
units
Universal Square Alu 23mm 23mm 18mm 23 x 23 x 18mm 23.4K/W Adhesive Foil - Black - - Aluminium BGA -
RS Stock No. 507-4753
Mfr. Part No.002504
TWD10.20
Each (In a Pack of 5)
units
- 13.21mm 19.05mm 9.52mm 13.21 x 19.05 x 9.52mm 25.9°C/W - - Black - Black Anodized - TO-220 -
RS Stock No. 485-8875
Mfr. Part No.PF720
TWD7.60
Each (In a Pack of 10)
units
- 19.84mm 8.1mm 20mm 19.84 x 8.1 x 20mm 28.9°C/W PCB Through Hole - - - - - TO-220 -
RS Stock No. 401-964
Mfr. Part No.400051
TWD60.60
Each (In a Pack of 20)
units
- 38mm 28mm 22mm 38 x 28 x 22mm 9.9°C/W Screw - Black - - - TO-220 -
RS Stock No. 712-4138
Mfr. Part No.241204B91200G
TWD265.00
Each
units
1/2 Brick DC/DC Converter 60.96mm 60.96mm 11.4mm 48.25 x 60.96 x 11.4mm - Screw - - - - - - -
RS Stock No. 712-4184
Mfr. Part No.241809B91200G
TWD113.00
Each
units
1/8 Brick DC/DC Converter 57.9mm 22.9mm 22.9mm 57.9 x 22.9 x 22.9mm - Screw - - - - - - -
RS Stock No. 712-4437
Mfr. Part No.0S506/150/B
TWD281.00
Each
units
- 150mm 27mm 50mm 150 x 27 x 50mm 2.46K/W Clip - Black - - - - -
RS Stock No. 712-4178
Mfr. Part No.241802B92200G
TWD79.00
Each
units
1/8 Brick DC/DC Converter 57.9mm 22.9mm 6.1mm 57.9 x 22.9 x 6.1mm - Screw - - - - - - -
RS Stock No. 712-4188
Mfr. Part No.241809B92200G
TWD138.00
Each
units
1/8 Brick DC/DC Converter 57.9mm 22.9mm 22.9mm 57.9 x 22.9 x 22.9mm - Screw - - - - - - -
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. 712-4194
Mfr. Part No.576802B00000G
TWD30.80
Each (In a Pack of 5)
units
- 19.05mm 14.48mm 12.7mm 12.7 x 14.48 x 19.05mm 27.3°C/W Clip - Black - Black Anodized - TO-220, TO-262 -
RS Stock No. 507-5150
Mfr. Part No.400073
TWD33.40
Each (In a Pack of 5)
units
- 19.5mm 12.7mm 13mm 19.5 x 12.7 x 13mm 20.3°C/W Solder - Black - - - TO-220, TO-262 -
RS Stock No. 268-076
Mfr. Part No.437661
TWD75.20
Each (In a Pack of 5)
units
- 19mm 51mm 41.2mm 19 x 51 x 41.2mm 8.6°C/W - - - - - - TO-220 -
RS Stock No. 712-4254
Mfr. Part No.ML73/38WPINS
TWD49.20
Each (In a Pack of 5)
units
- 12.8mm 35mm 38mm 12.8 x 35 mm x 38mm 10.4K/W Solder - Black - - - TO-220 -
RS Stock No. 712-4201
Mfr. Part No.591202B00000G
TWD29.40
Each (In a Pack of 5)
units
- 12.7mm 14.48mm 15.24mm 12.7 x 14.48 x 15.24mm 26.8°C/W PCB Through Hole - Black - - - TO-220, TO-262 -
RS Stock No. 403-178
Mfr. Part No.437868
TWD61.60
Each (In a Pack of 10)
units
- 12.5mm 34.5mm 38mm 12.5 x 34.5 x 38mm 10.2K/W Solder - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 490-7135
Mfr. Part No.MP/B/75
TWD532.80
Each (In a Pack of 5)
units
Universal Rectangular Alu 75mm 108mm 14mm 75 x 108 x 14mm 2.8K/W - - Black - - Aluminium - -
RS Stock No. 712-4197
Mfr. Part No.574502B00000G
TWD31.60
Each (In a Pack of 5)
units
- 19.05mm 21.84mm 10.03mm 10.03 x 21.84 x 19.05mm 21.2°C/W Spring Mount - Black - Black Anodized - TO-202, TO-220 -