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. 750-0951
Mfr. Part No.BGA STD 115
SGD3.29
Each
units
- 40mm 40mm 18mm 40 x 40 x 18mm 8.2K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 750-0879
Mfr. Part No.BGA PP 040
SGD5.63
Each
units
- 49mm 49mm 35mm 49 x 49 x 35mm 6.5K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 490-7292
Mfr. Part No.S586/B/125
SGD24.48
Each
units
Universal Rectangular Alu 125mm 200mm 25mm 125 x 200 x 25mm 0.72K/W - - Black - - - - -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
SGD69.89
Each
units
- 190mm 90mm 50mm - - - - - - - - LED Array -
RS Stock No. 158-556
Mfr. Part No.TDEX6015/TH12G
SGD45.87
Each
units
Universal Square Alu with fan 60mm 60mm 47mm 60 x 60 x 47mm 0.5K/W - - Black - - - - -
RS Stock No. 658-031
Mfr. Part No.188AB2500B
SGD44.21
Each
units
Universal Rectangular Alu 250mm 150mm 40mm 250 x 150 x 40mm 0.63K/W - - Black - - - - -
RS Stock No. 789-8573
Mfr. Part No.350AB1000B
SGD26.11
Each
units
Universal Rectangular Alu 100mm 125mm 50mm 100 x 125 x 50mm 1°C/W - - Black - - - - -
RS Stock No. 903-3179
Mfr. Part No.132AB2000B
SGD57.55
Each
units
Universal Rectangular Alu 200mm 250mm 30mm 200 x 250 x 30mm 0.14°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 189-9132
Mfr. Part No.FK231SA220
SGD1.08
Each
units
- 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - TO-220 -
RS Stock No. 903-3090
Mfr. Part No.122AB2000B
SGD33.98
Each
units
Universal Square Alu 200mm 200mm 15mm 200 x 200 x 15mm 0.23°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 712-4324
Mfr. Part No.534202B02853G
SGD1.512
Each (In a Pack of 5)
units
- 29.97mm 25.4mm 12.7mm 25.4 x 12.7 x 29.97mm 13.4K/W Solder - Black - - - TO-220 -
RS Stock No. 750-0914
Mfr. Part No.BGA STD 065
SGD12.60
1 Bag of 5
Bag(s)
- 27.8mm 27.8mm 11.2mm 27.8 x 27.8 x 11.2mm 12.2K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 867-0935
Mfr. Part No.SF-06-300-S
BrandSPREADFAST
SGD13.23
Each
units
Heat Pipe 300mm - - 6 x 300mm - - 6mm - - - Copper - SF
RS Stock No. 722-6915
Mfr. Part No.SK 487/37,5 SA
SGD4.21
Each
units
TO-220, TO-247 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS Stock No. 264-670
Mfr. Part No.165AB3000B
SGD148.37
Each
units
Universal Square Alu 300mm 300mm 40mm 300 x 300 x 40mm 0.29K/W - - Black - - - - -
RS Stock No. 712-4320
Mfr. Part No.575200B00000G
SGD0.862
Each (In a Pack of 5)
units
TO-92 15.2mm 3.1mm 12.7mm - 60°C/W Plug-On Collar - Black - Black Anodized - TO-92 -
RS Stock No. 401-964
Mfr. Part No.TV40G
SGD3.357
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. 234-2463
Mfr. Part No.159AB2000B
SGD64.34
Each
units
Universal Rectangular Alu 200mm 160mm 40mm 200 x 160 x 40mm 0.55K/W - - Black - - - - -
RS Stock No. 410-416
Mfr. Part No.P33/150A
BrandSemikron
SGD63.00
Each
units
SEMIPACK, SEMIPONT, SEMITRANS 150mm 96mm 40mm 150 x 96 x 40mm 1.4K/W - - Black - - - - -
RS Stock No. 750-0932
Mfr. Part No.BGA STD 090
SGD12.85
1 Bag of 5
Bag(s)
- 23.9mm 40mm 10mm 23.9 x 40 x 10mm 10K/W Adhesive Foil - Black - - - BGA -
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