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What is a HEAT SINK ?

Tags: electronics, science, technology
Asked by truth exposed, 28 Jan '13 01:21 pm
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Answers (2)


In electronic systems, a heat sink is a passive heat exchanger component that cools a device by dissipating heat into the surrounding air. In computers, heat sinks are used to cool central processing units or graphics processors. Heat sinks are used with high-power semiconductor devices such as power transistors and optoelectronic devices such as lasers and light emitting diodes (LEDs), wherever the heat dissipation ability of the basic device package is insufficient to control its temperature.

A heat sink is an essential component for cooling high-power integrated circuits. This heat sink is a combination of aluminum fins and copper heat pipes for cooling high-heat-dissipation processors (As shown is Freezer Xtreme from Arctic).[1]
A heat sink is designed to increase the surface area in contact with the cooling medium surrounding it, such as the air. Approach air velocity, choice of material, fin (or other protrusion) design and surface treatment are some of the factors which affe ...more
Answered by Ataur Rahman, 28 Jan '13 01:22 pm

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1. An environment capable of absorbing heat from an object with which it is in thermal contact without a phase change or an appreciable change in temperature.
2. A protective device that absorbs and dissipates the excess heat generated by a system.
Answered by jameel ahmed, 28 Jan '13 06:44 pm

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