Materials Knowledge

High Tg materials improve thermal-mechanical reliability, but they also change the fabrication window. Drilling, desmear, lamination, plated hole reliability, moisture

Standard FR4 has a glass transition temperature (Tg) of 130–140°C, measured by TMA. Below that threshold, the resin behaves like

Lead-free soldering has been the industry standard for nearly two decades. Since the RoHS directive reshaped electronics manufacturing, SAC305 has

FR4 is the material most printed circuit boards are made of, yet it is also the material most often left