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 Priced to Clear
RS Stock No. 189-8599
Mfr. Part No.SK42-100-SA
£14.05
Each
Units
Universal Rectangular Alu 100mm 200mm 25mm 100 x 200 x 25mm 0.95K/W - - Black - - Aluminium - -
RS Stock No. 774-2821
Mfr. Part No.LAM 5 100 24
£48.79
Each
Units
Universal Rectangular Alu with fan 100mm 50mm 50mm 100 x 50 x 50mm 0.4K/W PCB Mount - Natural - - - - -
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
£5.07
1 Bag of 5
Bag(s)
- 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 780-5893
Mfr. Part No.ILA-HSINK-STAR-50X20MM-BLK-K
£10.63
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. 189-8094
Mfr. Part No.SK104-25,4-STS-22
£1.58
Each
Units
- 25.4mm 34.9mm 12.7mm 25.4 x 34.9 x 12.7mm 14K/W Clip - Black - - - TO-220 -
RS Stock No. 189-8612
Mfr. Part No.SK42-200-SA
£20.26
Each
Units
Universal Rectangular Alu 200mm 200mm 25mm 200 x 200 x 25mm 1.65 → 0.7K/W - - Black - - Aluminium - -
RS Stock No. 189-8274
Mfr. Part No.SK92-100-SA
£9.80
Each
Units
Universal Square Alu 100mm 100mm 40mm 100 x 100 x 40mm 1K/W - - Black - - - - -
RS Stock No. 467-523
Mfr. Part No.CMBA024949
BrandMalico
£6.85
Each
Units
- 37.5mm 37.5mm 33mm 37.5 x 37.5 x 33mm 2.5K/W Screw - Black - - - BGA -
RS Stock No. 158-578
Mfr. Part No.TDEX3132/100
£17.76
Each
Units
Universal Rectangular Alu 100mm 101.6mm 32mm 100 x 101.6 x 32mm 0.6K/W - - Black - - - - -
RS Stock No. 268-105
Mfr. Part No.400020
£0.87
Each (In a Pack of 5)
Units
- 19mm 22mm 19mm 11 x 22 x 19mm 23°C/W PCB Through Hole - - - - - TO-220 -
RS Stock No. 403-184
Mfr. Part No.437874
£0.751
Each (In a Pack of 10)
Units
- 50mm 34.5mm 50mm 12.5 x 34.5 x 50mm 8.8K/W Solder - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 828-8744
Mfr. Part No.CPL8070-101
BrandMasterplug
£24.92
Each
Units
CPL80 - - 70mm 83 (Dia.) x 70 (H)mm 1.3°C/W Clip 83mm Black - - - LED -
RS Stock No. 221-2182
Mfr. Part No.SK76-50-TO220
£1.54
Each
Units
- 32mm 20mm 50mm 50 x 32 x 20mm 6K/W Screw - Black - Black Anodized - TO-220 -
RS Stock No. 712-4273
Mfr. Part No.BW50-2G
£0.974
Each (In a Pack of 5)
Units
- 25.4mm 34.9mm 50mm 25.4 x 34.9 x 50mm 5.8K/W PCB Through Hole - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 920-9546
Mfr. Part No.ILA-EXTRUSION-02-0315x40-BLK.
£6.55
Each
Units
Oslon 6, Stanley 3J/6J 315mm 40mm 24.6mm - - - - - - - - LED -
RS Stock No. 189-8606
Mfr. Part No.SK42-150-SA
£14.18
Each
Units
Universal Rectangular Alu 150mm 200mm 25mm 150 x 200 x 25mm 0.7K/W - - Black - - Aluminium - -
RS Stock No. 234-2485
Mfr. Part No.510AB0500MB
£4.04
Each
Units
Universal Rectangular Alu 50mm 65mm 20mm 50 x 65 x 20mm 3.3K/W - - Black - - - - -
RS Stock No. 234-2491
Mfr. Part No.510AB1000MB
£3.59
Each
Units
Universal Rectangular Alu 100mm 65mm 20mm 100 x 65 x 20mm 2.3K/W - - Black - - - - -
RS Stock No. 189-8404
Mfr. Part No.SK56-200-SA
£67.11
Each
Units
Universal Rectangular Alu 200mm 300mm 40mm 200 x 300 x 40mm 0.3K/W - - Black - - - - -
RS Stock No. 402-383
Mfr. Part No.P3/180A (CMT)
BrandSemikron
£67.88
Each
Units
SEMIPACK, SEMIPONT, SEMITRANS 180mm 125mm 135mm 180 x 125 x 135mm 0.48K/W - - Black - - - - -
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The LA ICK series heatsinks stand out due ...
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All attachable heatsinks are made from black anodised ...
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All attachable heatsinks are made from black anodised diecast aluminium.Heatsinks in the FK 237 Series have the following features:. A very slim design ensures that it does not require much spaceEasy assembly by sliding the heatsink onto the TO220 housingOptimal heat transfer as the fastening clips on the TO 220 ...
High-performance precision-forged clip-attachment heatsinks for BGA chipsets. AL6063 ...
Description:
High-performance precision-forged clip-attachment heatsinks for BGA chipsets. AL6063 grade aluminium at 201 W/m K thermal conductivityAvailable in wing-fin and pin-fin types giving high surface area to volume, and excellent thermal performanceAttachment by plastic clipExcellent performance for both natural convection and low to medium airflow levels with low pressure drop.