The Different Resin Materials Used in Printed Circuit Boards


June 24, 2020

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Your choice of circuit board material to form dielectric and prepreg layers can impact the electrical, thermal, and environmental performance of your board significantly. That’s why it’s crucial to choose the right resin material for your circuit board, depending on the application. The quality and type of wafer that you’ll be using will also impact the output of your printed circuit board, which is why you should only buy silicon wafer from trusted silicon wafer manufacturers. In this article, we will discuss the different resin materials you can use for your printed circuit board.

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Resin Used in Printed Circuit Boards


The condensation reaction between phenol and formaldehyde creates a thermoset material called phenolic resin. When in alcohol or aqueous solution, it can penetrate and drench paper and other similar materials, which allows cross-linking throughout the entire column after thermal exposure to provide the needed mechanical strength, chemical resistance, and electrical and thermal characteristics.

Epoxy and Modified Epoxy

Epoxy resins have good mechanical and electrical characteristics, which is why they’re the most commonly used material in making printed circuit boards. Aside from having great features, epoxy resins are also inexpensive, and dissolves quickly and safely in cheap solvents, making them easy to use.

BT Resins

If you’re looking for heat-resistant thermosets that have great system flexibility, then you should go for BT resins. BT resins are made of bismaleimide triazine resin that is co-reacted with epoxy. For circuit board applications, the mixture usually contains 10% BT and 90% resin.


Polyimide has high operating temperature ratings, excellent thermal conductivity, and low coefficient of thermal expansion, which is why they’re used for heavy-duty applications like military use and devices. Plus, they can withstand the thermal stress of numerous repair cycles.


Thermoplastic, like polyester, makes an excellent circuit board material for low-cost, high-volume applications such as automotive behind-the-dash cluster circuits and touch switches. Also, make sure to only use the best quality wafers from reliable and trusted silicon wafer manufacturers.

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Looking for Silicon Wafer Manufacturers?

To guarantee that your printed circuit board is of the best quality, you should only outsource high-quality wafers from trusted and reliable silicon wafer manufacturers. At Wafer World, we offer high-quality wafers at a reasonable price. Contact us for inquires!

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