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. 712-4425
Mfr. Part No.0S506/50/B
SGD10.49
Each
units
- 50mm 27mm 50mm 50 x 27 x 50mm 5.29K/W Clip - Black - - - - -
RS Stock No. 184-6718
Mfr. Part No.SFH3001-08L
BrandSPREADFAST
SGD6.06
Each
units
Universal Square Alu 30mm 30mm 8mm 30 x 30 x 8mm - - - Black Suitable for Use with a Wide Range of Semi-Conductor Devices with Flat Surfaces - Aluminium - SFH
RS Stock No. 674-4765
Mfr. Part No.ICK BGA 35x35x10
SGD3.76
Each
units
Universal Square Alu 35mm 35mm 10mm 35 x 35 x 10mm 15.7K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 489-6142
Mfr. Part No.MBH40002-25P/2.6
BrandMalico
SGD10.07
Each
units
Clip 40mm 40mm 25mm 40 x 40 x 25mm - Clip - Black - - - - -
RS Stock No. 722-6811
Mfr. Part No.SK 569/50 SA
SGD9.27
Each
units
Universal Round Alu - - 50mm 60 (Dia.) x 50mm 1.5K/W Screw 60mm Black - - - LED -
RS Stock No. 402-709
Mfr. Part No.P35/250A
BrandSemikron
SGD96.06
Each
units
SEMIPACK, SEMIPONT, SEMITRANS, Universal Rectangular Alu 250mm 200mm 40mm 250 x 200 x 40mm 0.41K/W - - Black - - - - -
RS Stock No. 255-8523
Mfr. Part No.SK434/50SA
SGD4.56
Each
units
- 50mm 50mm 40mm 50 x 50 x 40mm 3.1K/W - - Black - - - - -
RS Stock No. 750-0894
Mfr. Part No.BGA STD 025
SGD8.46
1 Bag of 5
Bag(s)
- 23mm 23mm 6mm 23 x 23 x 6mm 22K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 692-5107
Mfr. Part No.610AB1000B
SGD11.61
Each
units
Universal Rectangular Alu 100mm 98.5mm 53mm 100 x 98.5 x 53mm 1.7K/W - - Black - - - - -
RS Stock No. 221-2148
Mfr. Part No.SK0950TO220
SGD2.39
Each
units
- 50mm 29mm 11.5mm 50 x 29 x 11.5mm 9.5K/W Clip, Screw - - - - - TO-220 -
RS Stock No. 271-864
Mfr. Part No.345AB1000B
SGD24.09
Each
units
Universal Rectangular Alu 100mm 120mm 37mm 100 x 120 x 37mm 1K/W - - Black - - - - -
RS Stock No. 681-1540
Mfr. Part No.HAL-F12T
BrandTDK-Lambda
SGD50.86
Each
units
1/1 Brick AC/DC Converter, PFE 69.9mm 122mm 35mm 69.9 x 122 x 35mm 0.97K/W Screw - - - - - - -
RS Stock No. 123-5616
Mfr. Part No.SF-CHS-121210P
BrandSPREADFAST
SGD0.954
Each (In a Pack of 5)
units
Universal Square Ceramic 43mm 43mm 6mm 12 x 12 x 10mm 12.2 °C/W @ 100 lfm, 7.5 °C/W @ 400 lfm Adhesive, Screw - White Chipset, Cooling, IC Cooling, LED, Metal Heat Sink Replacement, Power Modules - - - Ceramic Heat Spreader Pin Fin
RS Stock No. 722-6785
Mfr. Part No.ICK LED R 23,5 x 14 G
SGD11.67
Each
units
Universal Round Alu - - 14mm 23.5 (Dia.) x 14mm 19.16K/W Adhesive Foil, Conductive Foil 23.5mm Black - - - LED -
RS Stock No. 856-8406
Mfr. Part No.RHS100
SGD74.02
Each
units
- 48mm 44mm 82mm 48 x 44 x 82mm 3.1°C/W DIN Rail - - - - - SSR -
RS Stock No. 893-4504
Mfr. Part No.C220-050-2AE
BrandOhmite
SGD7.37
Each
units
- 50mm 19.94mm 38mm 50 x 19.94 x 38mm - Clip - Black - Black Anodized Aluminium TO-220 C
RS Stock No. 221-2081
Mfr. Part No.ICKPEN38
SGD18.10
Each
units
- 49.5mm 49.5mm 38mm 49.5 x 49.5 x 38mm 4K/W Adhesive Foil - Black - - - - -
RS Stock No. 489-6108
Mfr. Part No.MBH35002-12P/2.6
BrandMalico
SGD8.64
Each
units
Clip 35mm 35mm 12mm 35 x 35 x 12mm - Clip - Black - - - - -
RS Stock No. 189-8460
Mfr. Part No.SK64-37,5-SA-1M3
SGD5.45
Each
units
- 37.5mm 70mm 25mm 37.5 x 70 x 25mm 4.1K/W Screw - Black - - - - -
RS Stock No. 712-4285
Mfr. Part No.PF758G
SGD1.572
Each (In a Pack of 5)
units
- 11mm 22mm 24mm 11 x 22 x 24mm 20.3°C/W PCB Through Hole - - - - - TO-220 -
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