The EL357N(B)(TA)-G optocoupler with transistor output is a 6-pin, low-power, plated through-hole optocoupler manufactured by Everlight. It features an infrared LED input coupled with a complementary NPN transistor output. The NPN transistor output isolates and provides an AC or DC circuit driving capability to the input. This optocoupler has a low turn-on time and a 4,000VRMS isolation voltage rating. It is designed for applications such as LED current control, solid-state relaying, and PC board level isolation for signal transmission.