Switching characteristics of silicon power-controlled rectifiers: I - Turn-on action

Turn-on time is the time interval required for decreasing the forward voltage occurring across a cell to 10% of its initial value after a gate current is applied. It contains two parts: (1) delay time " the period needed for the voltage to reduce from 100% to 90%, and (2) rise time " the period during which the voltage reduces from 90% to 10%.