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’.


...
Read more Read less

Filters

Viewing 1 - 20 of 737 products
Results per page
Description Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
HK$68.55
1 Bag of 5
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 263-251
BrandRS PRO
HK$10.031
Each (In a Pack of 10)
units
TO-220 20mm 35mm 20mm 20 x 35 x 20mm 17.9°C/W - - - - - Aluminium TO-220 -
RS Stock No. 722-6928
Mfr. Part No.SK 487/84 SA
HK$57.23
Each
units
- 84mm 52.3mm 28mm 84 x 52.3 x 28mm 2.5K/W Clip - Black - - - - -
RS Stock No. 189-8117
Mfr. Part No.SK104-50,8-STS-220
HK$21.79
Each
units
- 50.8mm 34.9mm 12.7mm 50.8 x 34.9 x 12.7mm 9K/W Clip - Black - - - TO-220 -
RS Stock No. 780-5925
Mfr. Part No.ILA-HSINK-STAR-50X40MM-SVR-K
HK$168.74
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 4, Stanley 1, Stanley 4 - - 40mm 50 (Dia.) x 40mm - Screw 50mm Silver - - - LED -
RS Stock No. 402-951
Mfr. Part No.400043
HK$18.423
Each (In a Pack of 20)
units
- 19mm 22mm 19mm 19 x 22 x 19mm 21°C/W Screw - Black - - - TO-126 -
RS Stock No. 674-4756
Mfr. Part No.ICK BGA 14x14x10
HK$10.23
Each
units
BGA 14mm 14mm 10mm 14 x 14 x 10mm 27.4K/W Adhesive Foil, Conductive Foil - Black - - Aluminium BGA -
RS Stock No. 221-2182
Mfr. Part No.SK76-50-TO220
HK$19.47
Each
units
- 32mm 20mm 50mm 50 x 32 x 20mm 6K/W Screw - Black - Black Anodized - TO-220 -
RS Stock No. 234-2334
Mfr. Part No.LS220
HK$19.06
Each
units
TO-218, TO-220 30.2mm 30mm 13mm 30.2 x 30 x 13mm 17°C/W Clip, Screw - Black - - - TO-218, TO-220 -
RS Stock No. 722-6915
Mfr. Part No.SK 487/37,5 SA
HK$34.07
Each
units
TO-220, TO-247 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS Stock No. 268-105
Mfr. Part No.400020
HK$8.80
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. 401-964
Mfr. Part No.400051
HK$17.27
Each (In a Pack of 20)
units
- 38mm 28mm 22mm 38 x 28 x 22mm 9.9°C/W Screw - Black - - - TO-220 -
RS Stock No. 485-8875
Mfr. Part No.PF720
HK$5.36
Each (In a Pack of 10)
units
- 19.84mm 8.1mm 20mm 19.84 x 8.1 x 20mm 28.9°C/W PCB Through Hole - - - - - TO-220 -
RS Stock No. 712-4260
Mfr. Part No.ML26AAG
HK$5.932
Each (In a Pack of 5)
units
- 25mm 15mm 20mm 25 x 15 x 20mm 17.9°C/W PCB Through Hole - Black - - - TO-220 -
RS Stock No. 722-6903
Mfr. Part No.SK 574/84 SA
HK$41.42
Each
units
- 84mm 32.3mm 28mm 84 x 32.3 x 28mm 4K/W Clip - Black - - - - -
RS Stock No. 189-9132
Mfr. Part No.FK231SA220
HK$9.91
Each
units
- 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - TO-220 -
RS Stock No. 158-578
Mfr. Part No.TDEX3132/100
HK$183.34
Each
units
Universal Rectangular Alu 100mm 101.6mm 32mm 100 x 101.6 x 32mm 0.6K/W - - Black - - Aluminium - -
RS Stock No. 722-6864
Mfr. Part No.SK 575/50 SA
HK$29.15
Each
units
- 50mm 6mm 50mm 50 x 6 x 50mm 6.8K/W Clip - Black - - - - -
RS Stock No. 169-6999
Mfr. Part No.KL157 KOMBI SW
BrandSeifert
HK$17.58
Each
units
- 41.3mm 33mm 25.4mm 41.3 x 33 x 25.4mm 25.4K/W Clip - - - - - - -
RS Stock No. 402-995
Mfr. Part No.436402
HK$18.04
Each (In a Pack of 10)
units
TO-220 32mm 32mm 16mm 60 x 32 x 16mm 6.8°C/W Screw - Black - - - TO-220 -
Related Products
These adjustable guides are suitable for use with ...
Description:
These adjustable guides are suitable for use with the extension rods and handles in the 3 point locking system range. Used to support rods RS stock nos. 348-7084 & 348-7090Unplated steel bracket suitable for weldingPolyamide slide with zinc plated steel ...
Push-to-close, electronic releaseHigh electromechanical release loadMinimal power drawIntegrated ...
Description:
Push-to-close, electronic releaseHigh electromechanical release loadMinimal power drawIntegrated connectorExtended housing for added securityDoor and Trigger SensorMicroswitch to detect latch statusMechanical over-ride with integrated cable bracket12V to 24V operationsEfficient DC gear motor actuationDetent ...
The Allegion 9160.PB brass push button code lock ...
Description:
The Allegion 9160.PB brass push button code lock is a simple means of securing a door which requires restricted but convenient access such as an office, workshop or storeroom. Operates using a single PIN codeƒSuitable for light duty and internal ...
The Squire Combi-Bolt3 is a unigue patented recodable ...
Description:
The Squire Combi-Bolt3 is a unigue patented recodable combination locking bolt that is completely rustproof.Simple to use and install, the Combi-Bolt's high-pick resistance give high quality security for doors and hatches, indoors and out. The solid construction and benifits of ...