TPD4E1B06 is a passive integrated circuit that activates whenever fast transient voltages above V_BR or below –V_BR are present on the circuit being protected. During ESD events, voltages as high as ±12 kV can be directed to ground through the internal diode network. Once the voltages on the protected line fall below the trigger levels of TPD4E1B06 (usually within 10’s of nano-seconds) the device reverts to passive.