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. 880-1943
Mfr. Part No.ILA-EXTRUSION-01-0150.
€2.432
Each (In a Pack of 5)
units
Duris P5 150mm 24mm 18.9mm - - - - - - - - LED -
RS Stock No. 712-4147
Mfr. Part No.241204B92200G
€7.36
Each
units
1/2 Brick DC/DC Converter 57.91mm 60.96mm 11.4mm 57.91 x 60.96 x 11.4mm - Screw - - - - - - -
RS Stock No. 189-8274
Mfr. Part No.SK92-100-SA
€17.66
Each
units
Universal Square Alu 100mm 100mm 40mm 100 x 100 x 40mm 1K/W - - Black - - Aluminium - -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
€1.524
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. 189-8426
Mfr. Part No.SK58-100-SA
€23.75
Each
units
Universal Rectangular Alu 100mm 150mm 27mm 100 x 150 x 27mm 1.3K/W - - Black - - Aluminium - -
RS Stock No. 126-3113
Mfr. Part No.FIT0504
BrandDFRobot
€10.71
Each
units
LattePanda 34.5mm 34.5mm 10mm 34.5 x 34.5 x 10mm - PCB Surface Mount, Screw - Blue - - Aluminium - -
RS Stock No. 780-5893
Mfr. Part No.ILA-HSINK-STAR-50X20MM-BLK-K
€13.81
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 4, Stanley 1, Stanley 4 - - 20mm 50 (Dia.) x 20mm - Screw 50mm Black - - - LED -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
€62.43
Each
units
- 190mm 90mm 50mm 190 x 90 x 50mm - - - - - - - LED Array -
RS Stock No. 722-6808
Mfr. Part No.SK 577/37,5 SA
€6.50
Each
units
Universal Round Alu - - 37.5mm 50 (Dia.) x 37.5mm 1.8K/W Screw 50mm Black - - - LED -
RS Stock No. 158-534
Mfr. Part No.TDX3358/200FMF12G
€158.04
Each
units
Universal Rectangular Alu with fan 200mm 135mm 98mm 200 x 135 x 98mm 0.06K/W - - Clear - - Aluminium - -
RS Stock No. 189-8612
Mfr. Part No.SK42-200-SA
€32.66
Each
units
Universal Rectangular Alu 200mm 200mm 25mm 200 x 200 x 25mm 1.65 → 0.7K/W - - Black - - Aluminium - -
RS Stock No. 126-3115
Mfr. Part No.FIT0506
BrandDFRobot
€1.09
Each (In a Pack of 5)
units
LattePanda 13.2mm 12.1mm 4.8mm 13.2 x 12.1 x 4.8mm - PCB Surface Mount - Orange Surface Mount Component Cooling - Copper - -
RS Stock No. 692-0685
Mfr. Part No.LAM 4 100 5 V
€83.16
Each
units
- 100mm 40mm 40mm 100 x 40 x 40mm 1.2K/W - - - - - - - -
RS Stock No. 189-8476
Mfr. Part No.SK64-75-SA-2M3
€9.18
Each
units
- 75mm 70mm 25mm 75 x 70 x 25mm 2.7K/W Screw - Black - - - - -
RS Stock No. 189-8252
Mfr. Part No.SK89-100-SA
€19.93
Each
units
- 100mm 80mm 78.6mm 100 x 80 x 78.6mm 1K/W - - Black - - - - -
RS Stock No. 920-9433
Mfr. Part No.ILA-HSINK-RADL-70X70MM-BLK
€38.75
Each
units
SCOB - - 70mm 70 (Dia.) x 70mm - - 70mm - - - - LED -
RS Stock No. 712-4188
Mfr. Part No.241809B92200G
€4.60
Each
units
1/8 Brick DC/DC Converter 57.9mm 22.9mm 22.9mm 57.9 x 22.9 x 22.9mm - Screw - - - - - - -
RS Stock No. 674-4769
Mfr. Part No.ICK BGA 40x40x10
€2.87
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. 507-4898
Mfr. Part No.EM/B/150
€41.44
Each
units
Universal Rectangular Alu 150mm 200mm 40mm 150 x 200 x 40mm 0.48K/W - - Black - - Aluminium - -
RS Stock No. 268-082
Mfr. Part No.437683
€0.936
Each (In a Pack of 5)
units
- 19.5mm 12.7mm 13mm 19.5 x 12.7 x 13mm 25°C/W Solder - Black - - - TO-220, TO-262 -