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. 774-2764
Mfr. Part No.LAM 3 50 05
kr 490,22
Each
Units
Universal Rectangular Alu with fan 50mm 30mm 30mm 50 x 30 x 30mm 1.4K/W PCB Mount - Natural - - - - -
RS Stock No. 184-6738
Mfr. Part No.HS-DC-1/2-HFL-9
BrandSPREADFAST
kr 29,03
Each
Units
1/2 Brick DC/DC Converter 62mm 60mm 10mm 62 x 60 x 10mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 826-1411
Mfr. Part No.PG1W-12-60-L3BN
Brandebm-papst
kr 512,56
Each
Units
Xicato 84mm 70mm 60.25mm 2.835 (Dia.) x 2.372 (L)in 0.94°C/W - - Black - Black Anodized - LED -
RS Stock No. 234-2277
Mfr. Part No.LS85
kr 19,10
Each
Units
- 38mm 42mm 25mm 38 x 42 x 25mm 7.1°C/W Clip, Screw - Black - - - TO-220 -
RS Stock No. 698-8142
Mfr. Part No.FK 251 10 LF PAK
kr 13,52
Each (In a Pack of 5)
Units
- 15mm 13mm 10mm 15 x 13 x 10mm 24K/W Solder - Silver - - - - -
RS Stock No. 880-5752
Mfr. Part No.322605B00000G
kr 51 110,21
1 Pack of 3000
Pack(s)
- - - 6.35mm 19.05 x 6.35mm 54°C/W Vertical 19.05mm Black - Black Anodized - TO-5 3226
RS Stock No. 402-513
Mfr. Part No.DIP1490
kr 60,263
Each (In a Pack of 10)
Units
- 31.9mm 10.5mm 7.3mm 31.9 x 10.5 x 7.3mm 24K/W Clip - Black - - - - -
RS Stock No. 698-8139
Mfr. Part No.FK 251 06 LF PAK
kr 11,964
Each (In a Pack of 5)
Units
- 15mm 13mm 6.5mm 15 x 13 x 6.5mm 32K/W Solder - Silver - - - - -
RS Stock No. 698-8136
Mfr. Part No.FK 250 10 LF PAK
kr 7,976
Each (In a Pack of 5)
Units
- 15mm 8mm 10mm 15 x 8 x 10mm 28.8K/W Solder - Silver - - - - -
RS Stock No. 2508958840
Mfr. Part No.NTE438
kr 6,00
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508958812
Mfr. Part No.NTE413
kr 12,24
1 Pack of 2
Pack(s)
- - - - - - - - - - - - - -
RS Stock No. 2508958856
Mfr. Part No.NTE439
kr 5,04
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508958828
Mfr. Part No.NTE415
kr 6,00
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508344294
Mfr. Part No.825902B05300
kr 7,56
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508958834
Mfr. Part No.NTE422
kr 18,12
1 Pack of 2
Pack(s)
- - - - - - - - - - - - - -
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