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. 189-8397
Mfr. Part No.SK56-150-SA
SGD82.85
Each
units
Universal Rectangular Alu 150mm 300mm 40mm 150 x 300 x 40mm 0.35K/W - - Black - - - - -
RS Stock No. 674-4759
Mfr. Part No.ICK BGA 27x27x10
SGD3.40
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. 189-8606
Mfr. Part No.SK42-150-SA
SGD27.07
Each
units
Universal Rectangular Alu 150mm 200mm 25mm 150 x 200 x 25mm 0.7K/W - - Black - - Aluminium - -
RS Stock No. 867-0938
Mfr. Part No.SF-06-150-S
BrandSPREADFAST
SGD11.76
Each
units
Heat Pipe 150mm - - 6 x 150mm - - 6mm - - - Copper - SF
RS Stock No. 674-4769
Mfr. Part No.ICK BGA 40x40x10
SGD2.07
Each
units
Universal Square Alu 40mm 40mm 10mm 40 x 40 x 10mm 13.8K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 189-8050
Mfr. Part No.SK100-100-SA
SGD15.89
Each
units
Universal Rectangular Alu 100mm 66mm 40mm 100 x 66 x 40mm 1.5K/W - - Black - - - - -
RS Stock No. 189-8088
Mfr. Part No.SK100-75-SA
SGD11.38
Each
units
Universal Rectangular Alu 75mm 66mm 40mm 75 x 66 x 40mm 1.9K/W - - Black - - - - -
RS Stock No. 409-9925
Mfr. Part No.WA 217.0
BrandSchaffner
SGD203.36
Each
units
Universal Rectangular Alu 1m 200mm 25mm 1000 x 200 x 25mm 0.55K/W - - Black - - - - -
RS Stock No. 489-6164
Mfr. Part No.MBH42.5002-25P/2.6
BrandMalico
SGD10.61
Each
units
Clip 42.5mm 42.5mm 25mm 42.5 x 42.5 x 25mm - Clip - Black - - - - -
RS Stock No. 712-4223
Mfr. Part No.576802B04000G
SGD2.77
Each (In a Pack of 5)
units
- 19.05mm 12.7mm 19.05mm 12.7 x 14.48 x 19.05mm 27.3K/W Solder - Black - - - TO-220, TO-262 -
RS Stock No. 903-3169
Mfr. Part No.153AB1500B
SGD28.90
Each
units
Universal Rectangular Alu 150mm 66mm 40mm 150 x 66 x 40mm 0.5°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 903-3163
Mfr. Part No.153AB2000B
SGD31.16
Each
units
Universal Rectangular Alu 200mm 66mm 40mm 200 x 66 x 40mm 0.4°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 880-1943
Mfr. Part No.ILA-EXTRUSION-01-0150.
SGD5.352
Each (In a Pack of 5)
units
Duris P5 150mm 24mm 18.9mm - - - - - - - - LED -
RS Stock No. 722-6896
Mfr. Part No.SK 574/25 SA
SGD3.53
Each
units
- 25mm 32.3mm 28mm 25 x 32.3 x 28mm 7.5K/W Clip - Black - - - - -
RS Stock No. 401-958
Mfr. Part No.436710
SGD78.92
Each
units
Universal Rectangular Alu 101.6mm 120mm 120mm 115 x 120 x 120mm 0.5K/W - - Black - - - - -
RS Stock No. 692-0616
Mfr. Part No.LA 9 100 24 V
SGD145.34
Each
units
Universal Rectangular Alu with fan 100mm 80mm 83mm 100 x 80 x 83mm 0.22K/W - - - - - - - -
RS Stock No. 674-4756
Mfr. Part No.ICK BGA 14x14x10
SGD1.12
Each
units
BGA 14mm 14mm 10mm 14 x 14 x 10mm 27.4K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 189-8319
Mfr. Part No.SK95-25-SA-220
SGD1.70
Each
units
- 25mm 12.6mm 6.5mm 25 x 12.6 x 6.5mm 36K/W Screw - Black - - - TO-220 -
RS Stock No. 903-3096
Mfr. Part No.122AB1500B
SGD35.59
Each
units
Universal Rectangular Alu 150mm 200mm 15mm 150 x 200 x 15mm 0.29°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 158-562
Mfr. Part No.TDEX6015/TH
SGD16.53
Each
units
Universal Square Alu 60mm 60mm 16mm 60 x 60 x 16mm 2K/W - - Black - - - - -
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