What are the ideal operating temperatures of both ceramic PCB and MCPCB?

Normally working temperature of MCPCB is <130℃, better less than 100C, dielectric layer in MCPCB is the bottle neck for high temperature, as the Tg value of that layer is only 130℃

Ceramic PCB can be: -50℃ to 800℃.

So if temperature higher than 130℃, then Ceramic PCB or High Tg PCB (but only around 170C) is good choice.

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