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庫存編號 864-4046
製造零件編號WA614-002
BrandSchaffner
HK$10.57
/個 (每包:5個)
單位
- 28mm 25mm 9.5mm - - Vertical - - - Black Anodized - TO-220 WA614
RS庫存編號 360-8764
製造零件編號WA 628.001
BrandSchaffner
HK$16.82
單位
- 13.21mm 19.05mm 19.05mm 13.21 x 6.35 x 19.05mm 35°C/W Clip - - - - - TO-220 -
RS庫存編號 409-9925
製造零件編號WA 217.0
BrandSchaffner
HK$1,160.93
單位
Universal Rectangular Alu 1m 200mm 25mm 1000 x 200 x 25mm 0.55K/W - - Black - - - - -
RS庫存編號 218-2249
製造零件編號KL224-25.4SW
BrandSchaffner
HK$9.31
單位
- 25.4mm 29mm 12mm 25.4 x 29 x 12mm 12K/W Clip - Black - - - - -
RS庫存編號 168-8099
製造零件編號WA408B
BrandSchaffner
HK$534.92
單位
Universal Rectangular Alu 1m 88mm 35mm - - - - - - - - - -
RS庫存編號 360-8770
製造零件編號WA 628.002
BrandSchaffner
HK$10.41
單位
- 13.21mm 19.05mm 19.05mm 13.21 x 9.53 x 19.05mm 30°C/W Clip - - - - - TO-220 -
RS庫存編號 410-0003
製造零件編號WA 412.0B
BrandSchaffner
HK$286.23
單位
Universal Rectangular Alu 1m 29mm 11.5mm 1000 x 29 x 11.5mm 5.4K/W - - - - - - - -
RS庫存編號 218-2081
製造零件編號RAWA410-0
BrandSchaffner
HK$418.93
單位
Universal Rectangular Alu 1m 47.5mm 19mm - - - - Black - - - - -
RS庫存編號 360-8809
製造零件編號KL 112.25.A SW
BrandSchaffner
HK$19.68
單位
- 25mm 11mm 16mm 25 x 11 x 16mm 18K/W Screw - Black - - - TO-220 -
RS庫存編號 168-8106
製造零件編號WA470B
BrandSchaffner
HK$561.96
單位
Universal Rectangular Alu 1m 100mm 15mm - - - - - - - - - -
RS庫存編號 218-2047
製造零件編號RAWA230-0
BrandSchaffner
HK$1,091.49
單位
Universal Rectangular Alu 1m 150mm 27mm - - - - Black - - - - -
RS庫存編號 360-8786
製造零件編號WA 628.003
BrandSchaffner
HK$6.34
單位
- 13.21mm 12.7mm 19.05mm 13.21 x 12.7 x 19.05mm 27°C/W Clip - - - - - TO-220 -
RS庫存編號 218-2277
製造零件編號KL194CLIP
BrandSchaffner
HK$3.432
/個 (每包:10個)
單位
Clip - - - - 48K/W - - - - - - - -
RS庫存編號 218-2261
製造零件編號KL224-50.8SW
BrandSchaffner
HK$29.29
單位
- 50.8mm 29mm 12mm 50.8 x 29 x 12mm 7.5K/W Clip - Black - - - - -
RS庫存編號 360-8758
製造零件編號WA 627.003
BrandSchaffner
HK$17.23
單位
- 13.21mm 12.7mm 19.05mm 13.21 x 12.7 x 19.05mm 27°C/W Clip - - - - - TO-220 -
RS庫存編號 360-8821
製造零件編號KL 112.25.C SW
BrandSchaffner
HK$17.50
單位
- 25mm 11mm 16mm 25 x 11 x 16mm 18K/W Screw - Black - - - TO-220 -
RS庫存編號 218-2211
製造零件編號KL205-38.1SW
BrandSchaffner
HK$28.03
單位
- 38.1mm 32mm 14mm 38.1 x 32 x 14mm 9K/W Clip - Black - - - - -
RS庫存編號 218-2104
製造零件編號RAWA560-0
BrandSchaffner
HK$923.21
單位
Universal Rectangular Alu 1m 66mm 40mm - - - - Black - - - - -
RS庫存編號 177-1804
製造零件編號WA212-0B
BrandSchaffner
HK$1,231.15
單位
Universal Rectangular Alu 1m 150mm 27mm 1000 x 150 x 27mm - - - - - - - - -
RS庫存編號 360-8815
製造零件編號KL 112.25.B SW
BrandSchaffner
HK$16.93
單位
- 25mm 11mm 16mm 25 x 11 x 16mm 18K/W Screw - Black - - - TO-220 -