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. 221-2104
Mfr. Part No.SK409-38,1STC
kr 24,03
Each
Units
- 38.1mm 45mm 12.7mm 38.1 x 45 x 12.7mm 7K/W Clip - Black - - - - -
RS Stock No. 177-1797
Mfr. Part No.WA212-0
BrandSchaffner
kr 1 178,13
Each
Units
Universal Rectangular Alu 1m 150mm 27mm 1000 x 150 x 27mm - - - Black - - Aluminium - -
RS Stock No. 780-5940
Mfr. Part No.ILA-HSINK-STAR-50X80MM-RED-K
kr 275,92
Each
Units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 16, Oslon 4, Oslon 9, Stanley 1, Stanley 4 - - 80mm 50 (Dia.) x 80mm - Screw 50mm Red - - - LED -
RS Stock No. 867-0953
Mfr. Part No.SF-10-150-S
BrandSPREADFAST
kr 138,46
Each
Units
Heat Pipe 150mm - - 10 x 150mm - - 10mm - - - Copper - SF
RS Stock No. 712-4207
Mfr. Part No.579302B00000G
kr 6,872
Each (In a Pack of 5)
Units
- 19.05mm 24.89mm 11.18mm 19.05 x 24.89 x 11.18mm 16.8°C/W PCB Through Hole - Black - - - TO-220 -
RS Stock No. 234-2356
Mfr. Part No.PPD0250P
kr 23,97
Each
Units
- 25mm 35mm 25mm 25 x 35 x 25mm 9°C/W Clip - Black - - - - -
RS Stock No. 169-4252
Mfr. Part No.SK92 150SA
kr 255,91
Each
Units
Universal Rectangular Alu 150mm 100mm 40mm 150 x 100 x 40mm 1K/W - - Black - - Aluminium - -
RS Stock No. 168-8077
Mfr. Part No.WA210B
BrandSchaffner
kr 2 414,43
Each
Units
Universal Rectangular Alu 1m 200mm 40mm 1000 x 200 x 40mm - - - - - - Aluminium - -
RS Stock No. 674-4769
Mfr. Part No.ICK BGA 40x40x10
kr 28,16
Each
Units
Universal Square Alu 40mm 40mm 10mm 40 x 40 x 10mm 13.8K/W Adhesive Foil, Conductive Foil - Black - - Aluminium BGA -
RS Stock No. 126-3113
Mfr. Part No.FIT0504
BrandDFRobot
kr 105,18
Each
Units
LattePanda 34.5mm 34.5mm 10mm 34.5 x 34.5 x 10mm - PCB Surface Mount, Screw - Blue - - Aluminium - -
RS Stock No. 712-4232
Mfr. Part No.576802B03100G
kr 4,908
Each (In a Pack of 5)
Units
- 19.05mm 14.48mm 12.7mm 19.05 x 14.48 x 12.7mm 27.3°C/W Clip - Black - Black Anodized - TO-220, TO-262 -
RS Stock No. 189-8533
Mfr. Part No.SK85-100-SA
kr 303,64
Each
Units
Universal Rectangular Alu 100mm 160mm 40mm 100 x 160 x 40mm 0.9K/W - - Black - - Aluminium - -
RS Stock No. 123-5629
Mfr. Part No.SF-CHS-151506-PC
BrandSPREADFAST
kr 12,854
Each (In a Pack of 5)
Units
Universal Square Ceramic 15mm 15mm 6mm 15 x 15 x 6mm 29.5 °C/W @ 400 lfm, 52.5 °C/W @ 100 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Circular Pin Fin
RS Stock No. 168-6302
Mfr. Part No.WA 507
BrandSeifert
kr 633,30
Each
Units
Universal Rectangular Alu 1m 100mm 28mm 1000 x 100 x 28mm - - - Black - - Aluminium - -
RS Stock No. 674-4857
Mfr. Part No.ICK S R 50x10
kr 106,76
Each
Units
Universal Round Alu - - 10mm 50 (Dia.) x 10mm 5.28K/W Adhesive Foil, Conductive Foil 50mm - - - - - -
RS Stock No. 168-8049
Mfr. Part No.WA202B
BrandSchaffner
kr 1 044,20
Each
Units
Universal Rectangular Alu 1m 120mm 37mm 1000 x 120 x 37mm - - - - - - Aluminium - -
RS Stock No. 692-0685
Mfr. Part No.LAM 4 100 5 V
kr 784,15
Each
Units
- 100mm 40mm 40mm 100 x 40 x 40mm 1.2K/W - - - - - - - -
RS Stock No. 492-131
Mfr. Part No.00C863501A
kr 34,36
Each
Units
Universal Square Alu 80mm 58.6mm 36mm 80 x 58.6 x 36mm 4K/W Screw - - - - Aluminium BGA -
RS Stock No. 189-8993
Mfr. Part No.LAICK21X21W
kr 676,96
Each
Units
Universal Square Alu with fan 53.34mm 53.34mm 20mm 53.34 x 53.34 x 20mm 1.4K/W Conductive Adhesive - Black - - Aluminium - -
RS Stock No. 903-3175
Mfr. Part No.132AB1500B
kr 479,43
Each
Units
Universal Rectangular Alu 150mm 250mm 30mm 150 x 250 x 30mm 0.17°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100