Why is it important to understand copper foil characteristics in PCB manufacturing?

In a multilayer PCB, copper foil is not only used to conduct electrical signals and power. It also plays a key role in the mechanical integrity of the PCB stack-up.

The characteristics of the copper surface directly influence the bonding between copper and resin during the lamination process. Continue reading “Why is it important to understand copper foil characteristics in PCB manufacturing?”

Why is it important to identify prepregs in a PCB?

In a multilayer PCB, prepregs (pre-impregnated materials) are composed of glass fiber impregnated with resin. They provide electrical insulation and bonding between the different circuit layers during the lamination process.

However, not all prepregs are the same. The balance between resin and glass fiber directly impacts PCB construction. Continue reading “Why is it important to identify prepregs in a PCB?”