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 81 - 100 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. 712-4190
Mfr. Part No.575002B00000G
HK$3.916
Each (In a Pack of 5)
units
- 29.97mm 25.4mm 12.7mm 12.7 x 25.4 x 29.97mm 13.6°C/W PCB Through Hole - Black - - - TO-220 -
RS Stock No. 867-0890
Mfr. Part No.SF-03-100-S
BrandSPREADFAST
HK$71.64
Each
units
Heat Pipe 100mm - - 3 x 100mm - - 3mm - - - Copper - SF
RS Stock No. 402-989
Mfr. Part No.437691
HK$106.59
Each (In a Pack of 10)
units
- 26.9mm 40.8mm 25mm 26.9 x 40.8 x 25mm 7.4K/W Solder - Black - - - TO-3 -
RS Stock No. 189-8713
Mfr. Part No.SK53-100-SA
HK$126.23
Each
units
- 100mm 180mm 48mm 100 x 180 x 48mm 0.6K/W - - Black - - - - -
RS Stock No. 189-8268
Mfr. Part No.SK89-75-SA
HK$123.32
Each
units
- 75mm 80mm 78.6mm 75 x 80 x 78.6mm 1.3K/W - - Black - - - - -
RS Stock No. 158-562
Mfr. Part No.TDEX6015/TH
HK$107.24
Each
units
Universal Square Alu 60mm 60mm 16mm 60 x 60 x 16mm 2K/W - - Black - - Aluminium - -
RS Stock No. 189-8864
Mfr. Part No.SK04-75-SA
HK$47.91
Each
units
- 75mm 97mm 25mm 75 x 97 x 25mm 1.9K/W - - Black - - - - -
RS Stock No. 189-8296
Mfr. Part No.SK92-75-SA
HK$89.80
Each
units
Universal Rectangular Alu 75mm 100mm 40mm 75 x 100 x 40mm 1.25K/W - - Black - - Aluminium - -
RS Stock No. 674-4731
Mfr. Part No.ICK PGA 17x17x8
HK$19.55
Each
units
Universal Square Alu 43.1mm 43.1mm 8mm 43.1 x 43.1 x 8mm 13.2K/W Adhesive Foil, Conductive Foil - Black - - Aluminium PGA -
RS Stock No. 903-3157
Mfr. Part No.113AB2000B
HK$239.32
Each
units
Universal Rectangular Alu 200mm 150mm 25mm 200 x 150 x 25mm 0.31°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 158-534
Mfr. Part No.TDX3358/200FMF12G
HK$1,113.00
Each
units
Universal Rectangular Alu with fan 200mm 135mm 98mm 200 x 135 x 98mm 0.06K/W - - Clear - - Aluminium - -
RS Stock No. 780-5962
Mfr. Part No.ILA-HSINK-78X46X25MM-BLK-K
HK$163.82
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 16, Oslon 4, Oslon 9, Stanley 1, Stanley 4 78mm 46mm 25mm 78 x 46 x 25mm - Screw - Black - - - LED -
RS Stock No. 912-5004
Mfr. Part No.ILA-HSNK-190x90x50mm-BLK
HK$407.31
Each
units
- 190mm 90mm 50mm - - - - - - - - LED Array -
RS Stock No. 789-8567
Mfr. Part No.520AB1250MB
HK$100.67
Each
units
Universal Rectangular Alu 125mm 88mm 35mm 125 x 88 x 35mm 1.25°C/W - - Black - - Aluminium - -
RS Stock No. 189-8561
Mfr. Part No.SK08-75-SA
HK$63.02
Each
units
- 75mm 88mm 35mm 75 x 88 x 35mm 1.9K/W - - Black - - - - -
RS Stock No. 674-4835
Mfr. Part No.ICK S 40x40x20
HK$92.84
Each
units
Universal Square Alu 40mm 40mm 20mm 40 x 40 x 20mm 3.5K/W Adhesive Foil, Conductive Foil - - - - Aluminium - -
RS Stock No. 780-5966
Mfr. Part No.ILA-HSINK-78X46X25MM-BLU-K
HK$119.20
Each
units
Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 16, Oslon 4, Oslon 9, Stanley 1, Stanley 4 78mm 46mm 25mm 78 x 46 x 25mm - Screw - Blue - - - LED -
RS Stock No. 189-8511
Mfr. Part No.SK68-50-SA
HK$36.02
Each
units
- 50mm 46mm 33mm 50 x 46 x 33mm 4.8K/W Screw - Black - - - TO-220 -
RS Stock No. 189-8527
Mfr. Part No.SK68-75-SA
HK$48.00
Each
units
- 75mm 46mm 33mm 75 x 46 x 33mm 3.9K/W Screw - Black - - - TO-220 -
RS Stock No. 189-9003
Mfr. Part No.ICK14/16B
HK$8.34
Each
units
Universal Rectangular Alu 6.3mm 19mm 4.8mm 6.3 x 19 x 4.8mm 50K/W - - Black - - Aluminium DIL-IC -