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 750-0888
製造零件編號BGA STD 010
HK$44.87
毎包:5 個
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - - -
RS庫存編號 263-251
BrandRS PRO
HK$8.959
/個 (每包:10個)
單位
TO-220 20mm 35mm 20mm 20 x 35 x 20mm 17.9°C/W - - - - - Aluminium - -
RS庫存編號 722-6928
製造零件編號SK 487/84 SA
HK$35.08
單位
TO-220, TO-247 84mm 52.3mm 28mm 84 x 52.3 x 28mm 2.5K/W Clip - Black - - - - -
RS庫存編號 189-8117
製造零件編號SK104-50,8-STS-220
HK$16.57
單位
TO-220 50.8mm 34.9mm 12.7mm 50.8 x 34.9 x 12.7mm 9K/W Clip - Black - - - - -
RS庫存編號 402-951
製造零件編號TV4G
HK$27.357
/個 (每包:20個)
單位
TO-126 19mm 22mm 19mm 19 x 22 x 19mm 21°C/W Screw - Black - - - - -
RS庫存編號 780-5925
製造零件編號ILA-HSINK-STAR-50X40MM-SVR-K
HK$133.45
單位
Dragon 1+ PowerStar, Duris 1+ PowerStar, Duris 4+ PowerStar, OSLON 1+ PowerStar, OSLON 4+ PowerStar, Stanley 1 PowerStar, Stanley 4 PowerCluster - - 40mm 50 (Dia.) x 40mm - Screw 50mm Silver - - - - -
RS庫存編號 674-4756
製造零件編號ICK BGA 14x14x10
HK$10.50
單位
BGA 14mm 14mm 10mm 14 x 14 x 10mm 27.4K/W Adhesive Foil, Conductive Foil - Black - - - - -
RS庫存編號 867-9039
製造零件編號RPI-COOLINGKIT.9
HK$38.83
單位
Raspberry Pi 1 & 2 - - - - - - - Black - - - - -
RS庫存編號 221-2182
製造零件編號SK76-50-TO220
HK$13.91
單位
TO-220 32mm 20mm 50mm 50 x 32 x 20mm 6K/W Screw - Black - Black Anodized - - -
RS庫存編號 234-2334
製造零件編號LS220
HK$17.61
單位
TO-218, TO-220 30.2mm 30mm 13mm 30.2 x 30 x 13mm 17°C/W Clip, Screw - Black - - - - -
RS庫存編號 722-6915
製造零件編號SK 487/37,5 SA
HK$21.06
單位
TO-220, TO-247 37.5mm 52.3mm 28mm 37.5 x 52.3 x 28mm 5K/W Clip - Black - - - - -
RS庫存編號 268-105
製造零件編號400020
HK$6.764
/個 (每包:5個)
單位
TO-220 11mm 22mm 19mm 11 x 22 x 19mm 23°C/W PCB Through Hole - - - - - - -
RS庫存編號 712-4260
製造零件編號ML26AAG
HK$4.306
/個 (每包:5個)
單位
TO-220 25mm 15mm 20mm 25 x 15 x 20mm 17.9°C/W PCB Through Hole - Black - - - - -
RS庫存編號 722-6903
製造零件編號SK 574/84 SA
HK$25.48
單位
TO-220, TO-247 84mm 32.3mm 28mm 84 x 32.3 x 28mm 4K/W Clip - Black - - - - -
RS庫存編號 189-9132
製造零件編號FK231SA220
HK$7.05
單位
TO-220 19mm 13.5mm 9.5mm 19 x 13.5 x 9.5mm 24K/W Screw - Black - - - - -
RS庫存編號 485-8875
製造零件編號PF720
HK$4.793
/個 (每包:10個)
單位
TO-220 19.84mm 8.1mm 20mm 19.84 x 8.1 x 20mm 28.9°C/W PCB Through Hole - - - - - - -
RS庫存編號 401-964
製造零件編號TV40G
HK$14.847
/個 (每包:20個)
單位
TO-220 38mm 28mm 22mm 38 x 28 x 22mm 9.9°C/W Screw - Black - - - - -
RS庫存編號 169-6999
製造零件編號KL157 KOMBI SW
BrandSeifert
HK$14.92
單位
TO-3, TO-32, TO-66, TO-9 41.3mm 33mm 25.4mm 41.3 x 33 x 25.4mm 25.4K/W Clip - - - - - - -
RS庫存編號 234-2328
製造零件編號LS205
HK$12.55
單位
TO-220 19mm 22mm 11mm 19 x 22 x 11mm 30°C/W Clip, Screw - Black - - - - -
RS庫存編號 403-184
製造零件編號437874
HK$8.618
/個 (每包:10個)
單位
TO-218, TO-220, TO-247 12.5mm 34.5mm 50mm 12.5 x 34.5 x 50mm 8.8K/W Solder - Black - - - - -