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. 658-031
Mfr. Part No.188AB2500B
kr 472,14
Each
Units
Universal Rectangular Alu 250mm 150mm 40mm 250 x 150 x 40mm 0.63K/W - - Black - - - - -
RS Stock No. 903-3107
Mfr. Part No.177AB2000B
kr 1 089,67
Each
Units
Universal Rectangular Alu 200mm 300mm 83mm 200 x 300 x 83mm 0.07°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 271-858
Mfr. Part No.345AB0750B
kr 67,77
Each
Units
Universal Rectangular Alu 75mm 120mm 37mm 75 x 120 x 37mm 1.2K/W - - Black - - - - -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
kr 13,80
Each (In a Bag of 5)
Units
- 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 234-2520
Mfr. Part No.520AB0750MB
kr 81,44
Each
Units
Universal Rectangular Alu 75mm 88mm 35mm 75 x 88 x 35mm 1.65K/W - - Black - - - - -
RS Stock No. 750-0908
Mfr. Part No.BGA STD 050
kr 18,462
Each (In a Bag of 5)
Units
- 20mm 20mm 19.1mm 20 x 20 x 19.1mm 14K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 750-0881
Mfr. Part No.BGA STD 015
kr 11,048
Each (In a Bag of 5)
Units
- 14mm 14mm 10mm 14 x 14 x 10mm 26.5K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 234-2457
Mfr. Part No.159AB1500B
kr 429,52
Each
Units
Universal Rectangular Alu 150mm 160mm 40mm 150 x 160 x 40mm 0.65K/W - - Black - - - - -
RS Stock No. 903-3147
Mfr. Part No.180AB1500B
kr 827,32
Each
Units
Universal Rectangular Alu 150mm 215mm 77mm 150 x 215 x 77mm 0.1°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 264-692
Mfr. Part No.605AB2000B
kr 73,00
Each
Units
Universal Rectangular Alu 200mm 125mm 27mm 200 x 125 x 27mm 1.5K/W - - Black - - - - -
RS Stock No. 234-2356
Mfr. Part No.PPD0250P
kr 21,67
Each
Units
- 25mm 35mm 25mm 25 x 35 x 25mm 9°C/W Clip - Black - - - - -
RS Stock No. 400-056
Mfr. Part No.193AB1500B
kr 605,62
Each
Units
Universal Rectangular Alu 150mm 240mm 46mm 150 x 240 x 46mm 0.4K/W - - Black - - - - -
RS Stock No. 903-3175
Mfr. Part No.132AB1500B
kr 425,62
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
RS Stock No. 234-2514
Mfr. Part No.515AB1000MB
kr 87,55
Each
Units
Universal Rectangular Alu 100mm 88mm 25mm 100 x 88 x 25mm 1.5K/W - - Black - - - - -
RS Stock No. 234-2564
Mfr. Part No.LS300
kr 22,18
Each
Units
- 36.9mm 44mm 10mm 36.9 x 44 x 10mm 12°C/W Clip, Screw - Black - - - TO-220 -
RS Stock No. 789-8586
Mfr. Part No.PPL0750B
kr 56,68
Each
Units
- 75mm 50mm 28mm 75 x 50 x 28mm 3.7°C/W Screw - Black - - - TO-220 -
RS Stock No. 789-8567
Mfr. Part No.520AB1250MB
kr 132,97
Each
Units
Universal Rectangular Alu 125mm 88mm 35mm 125 x 88 x 35mm 1.25°C/W - - Black - - - - -
RS Stock No. 234-2334
Mfr. Part No.LS220
kr 28,65
Each
Units
- 30.2mm 30mm 13mm 30.2 x 30 x 13mm 17°C/W Clip, Screw - Black - - - TO-218, TO-220 -
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. 750-0853
Mfr. Part No.BGA FC 015
kr 26,29
Each
Units
- 40mm 40mm 24mm 40 x 40 x 24mm 11K/W Adhesive Foil - Black - - - BGA -