4170Vrms isolation drives 400V loads from logic
With 4170Vrms isolation and a 400V output rating, this optoisolator bridges a low-voltage DC input (1.15V forward typical,) to a high-side transistor switching up to 100mA. The 20% minimum CTR at 10mA input means the output saturates reliably with standard LED drive current. The 5µs turn-on and turn-off times are fast enough for relay coil drivers, PLC digital inputs, and 50/60Hz phase-control circuits, but not for high-frequency PWM above a few kHz.
Industrial temperature range and surface-mount package
The 6-SMD gull-wing package reflows with standard lead-free profiles; the 400mV max Vce saturation keeps conduction loss low at 100mA output.