The Vishay ILQ621GB-X009 is a quad-channel phototransistor-output optocoupler in a 16-SMD gull-wing package, providing 5300 Vrms of galvanic isolation across four independent channels. It is designed for signal isolation in industrial PLCs, motor drives, power supplies, and medical equipment where a single package must break ground loops or protect low-voltage logic from high-side transients. Each channel can switch up to 50 mA at a maximum collector-emitter voltage of 70 V, with a current transfer ratio (CTR) guaranteed between 100% and 600% at a forward current of 5 mA. The 1.15 V typical forward drop per LED keeps drive power low, while the 400 mV maximum Vce(sat) ensures minimal voltage drop in the on-state. Rise and fall times are both 2 µs typical, with turn-on and turn-off times of 3 µs and 2.3 µs respectively — fast enough for 100 kbps-class data isolation or slow digital I/O, but not meant for high-speed serial links.
Active lifecycle — no last-time-buy risk
For long-life industrial or medical BOMs, this active status is a green light for production planning.
Temperature range and package — fit for harsh environments
Rated for -55°C to 100°C operating temperature, this optocoupler handles the thermal extremes of outdoor telecom cabinets, engine-bay-adjacent electronics, and military-grade equipment. The 16-SMD gull-wing package is a surface-mount footprint compatible with standard reflow soldering, and the 5300 Vrms isolation rating satisfies reinforced insulation requirements per IEC 60950-1 and IEC 60601-1 for medical and industrial safety barriers.