“Double sided metal core PCB” is an incomplete construction note. A buyer may mean two copper circuit layers above one metal base, or circuits on opposite faces of a metal core. Those arrangements h...
Telecom PCB manufacturing starts with a channel requirement and ends with an approved physical build. Between those points, the team must control the changes that affect a long high-speed route or a...
RF PCB supplier evaluation should follow the evidence for one proposed construction. A material logo and a photograph of a TDR instrument tell a buyer little about how the supplier will control a pa...
A PCB TDR impedance test should leave enough information for another engineer to understand what was measured. A report containing one green pass box and an impedance value cannot explain the coupon...
