Thermal Gap Pad and Gap Filler
The ability of a component to dissipate the heat directly impacts on the longevity of a product. What is Thermal Gap Pad, It is used to bridge gaps between components, allowing heat to move freely and removing the need for additional insulation. The best gap filler is flexible and soft. It can adapt to uneven or textured surfaces and eliminate air pocket to create a solid bridge for heat transfer.
Gap fillers, also known as adhesives, are used to fill in gaps that exist between a heat source (such as a MOSFETS or IGBT) and a cooling device. They're used for electronics components like power semiconductors. Some are UL 94 rated, making it suitable for use in consumer goods and electrical equipment.
Gap fillers are not pastes but a gel-like liquid that is thicker and more viscous than regular grease. This allows them to cover a larger surface and is more durable compared to traditional thermal interface material. This durability also helps reduce the risk that vibrations or a shock will cause damage.
It is important that gap filler adheres to a wide range of substrates. This is vital to their use in many electronic applications. They're available in a range of thicknesses, and they can be cut to size to fit a specific application. These materials can be reused many times, making them a cost-effective option for high volume production environments.
Some gap filler materials are made from a material that's naturally fire resistant. These include rock wool, made from natural minerals such as basalt or diabase, and slag wool, which is made from the waste matter left on the surface of molten metal. Other gap fillers are made from recycled or post-industrial materials. Many of these spray-on materials don't require a chemical coating to make the material fire resistant. Some foams cure with a heating gun, while other require a special system of pressure mapping to determine how material will distribute force between the gap in the heat sink and the heat source.
Choosing the best gap filler can be a challenge. The best gapfiller for a particular project will depend both on the gap tolerences and the thermal strain that will occur under dynamic loading. A gap filler which can be compressed down to 10% is likely to be a good option. Fujipoly gap-fillers come in a variety of formulations. BIBS is a soft and flexible material that does not require a pressure testing system.
Some gap-filling materials are designed for form-in-place. This means they are placed on the surface, and allowed to cure. This can save a lot of time and effort, but you should remember that these materials are similar to toothpaste and will need a little pressure to be effective. It is possible to use a pressure mapping system to create a graphic representation of the compression distribution across the gap. But it is not necessary for all applications.