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 doesnt 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.
Description:
Aluminium heatsink solution with plastic clips, and phase
change thermal interface material for heat removal on BGA packages and similar heat sources Low profile Base thickness 1.7mm Black anodised finish Plastic clip for simple attachment to BGAHigh performance phase change ...
Description:
Spreadfast thermally conductive engineering plastic has been developed
for its thermal conductivity, mouldability and EMI issue reducing properties Heat sinks using this plastic have a 30% reduced weight when compared with similar performing aluminium products. The material has excellent mouldability ...
Description:
The LA ICK series heatsinks stand out due
to the following characteristics: Particularly high-quality design Integrated fan (12 V), allowing a very low height profile17 x 17 pin matrix suitable for processor 80486Fan motor with dual ball bearing mounted axis, ...
Description:
High-performance precision-forged clip-attachment heatsinks for BGA chipsets AL6063
grade aluminium at 201 W/m K thermal conductivity Available in wing-fin and pin-fin types giving high surface area to volume, and excellent thermal performance Attachment by plastic clip Excellent performance for both ...
