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What material group according to UL would the FR-4, Nan Ya NP-140F, PCB boards have?

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What material group according to UL would the FR-4, Nan Ya NP-140F, PCB boards have?
What material group according to UL would the FR-4, Nan Ya NP-140F, PCB boards have?

22*******4A

2026-04-08 17:43 PM

I am looking for what material group according to UL would the FR-4, Nan Ya NP-140F, PCB boards have.

I need this to calculate the minimum creepage distance for PCB traces according to voltage.