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Presentation Transcript
4 Factors to Consider when Buying Heatsinks

There are a variety of ways to produce heatsinks and the best type is often determined by the role it will

play in the product. However, the most frequent process is extrusion. Extrusion tends to be the most

efficient process. Pressure and high temperatures are applied and hot aluminum is pushed through a steel

piece to produce the final shape. The best type of heatsinks tend to be extruded ones. LED thermal

management aluminum heatsinksare frequently used and produced as they reduce thermal stress.

There are a number of important factors when buying a heatsink but the most important tend to be:

High Heatsink Surface Area

Heat sink manufacturingis a hard process and the best heatsinks tend to have a high surface area as

thermal transfer occurs on the surface. Often, producers of high qualify heatsinks ensure that there are

many fine fins and that the heatsink has a large surface area.

Good Air Flow

Heatsinks must be designed to efficiently allow air to float through and reach the cooling fins. This is

difficult with a high number of fine fins and there will always be a compromise between the number fins

andair flow.

Good Transfer of Heat

The most important aspect of a heatsink is that it allows heat from the source to the fins. Heatsinks with

thicker fins are better at transferring heat.

Flatness of the Contact Area

The best heatsinks are manufactured with a perfectly flat area where it meets the heat source. This

allows the heat source to more easily transfer through the heatsink itself.

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