Electronic Manufacturing Questions Answered

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Why do you order a laser stencil?

I am looking to order a prototype PCB and all the manufactures I’ve gotten a quote from all offer to include a Laser stencil, some charge for the stencil some

What type of PCB material should I use?

I’m making my first 4 layer PCB (1 signal, 2 GND plane, 3 PWR plane, 4 signal) with impedance control. How do you know what type of material to use?

Is PCB coating poisonous ?

We decide to apply coating on PCB to ensure good lifespan. But, on the other hand, is it poisonous? We are considering the environmental effect of our product.

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