Should You Choose Hard or Soft PCB Materials? (.PDF Download)

Materials for printed circuit boards (PCBs) can contribute a great deal to the success or failure of a final circuit design, since those materials affect thermal behavior as well as the electrical and mechanical characteristics of the circuit. At one time, the choice in RF/microwave circuit-board materials was simply between a “hard” or rigid circuit material, typically based on some form of ceramic material, and a “soft” or flexible type of circuit material, often

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