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Conformal Coatings & Heat Dissipation Protection

As demand for smaller electronics grows exponentially, your product challenges grow just as much. You need to pack more components into a diminishing space, which can increase your electronics’ susceptibility to overheating due to a reduction in thermal flow.  

Coating
Desired
Parylene
Acrylic
Epoxy
Silicone
Urethane
Thermal Conductivity (W/mK)
High
0.13 – 0.18
0.13-0.25
0.17-0.21
0.15-0.31
0.21
Film Thickness (µm)
Low
1-25
30-130
30-130
50-210
30-130

What’s the Best Coating for Heat Dissipation Protection?

The best coating to facilitate heat dissipation is parylene simply because it’s the thinnest. If you choose a thick coating, it can be a direct cause of overheating, leading to premature failure and decreased reliability. As each component has a maximum operating temperature, it is critical to dissipate heat through methods such as heat sinks.

Traditional protective coatings such as acrylics or epoxies have low thermal conductivities, hundreds to thousands of times lower than ceramics or metals. Therefore, conventional coatings such as silicones create heat barriers that can interfere with the heat transfer path, as they are used in thick layers that can impede heat dissipation.

More About Parylene – The Gold Standard

Parylene is an ultra-thin, lightweight material that provides sturdy, proven protection for electronics from every element. This powerful material outperforms traditional conformal coatings, offering the highest standard of protection at the thinnest amount of coating thickness.

Parylene Coatings From HZO

HZO works with some of the largest companies across industries from design through production, no matter the volume, complexity, or protection required. We strive to deliver a better, more reliable and more durable product no matter what you need protection against.