A high Tg printed circuit board is designed to withstand higher temperatures compared to standard PCBs, making it a preferred choice for applications where heat resistance, stability, and performance under stress are critical. The term “Tg” refers to the glass transition temperature of the PCB material — the temperature at which the substrate changes from a rigid, glassy state to a softer, more pliable form. Standard PCBs usually have a Tg of around 130°C, but high Tg PCBs offer Tg values of 170°C or higher, enabling them to perform reliably in high-temperature environments. Why High Tg Matters in Modern Electronics…
