5 kV isolation for safety-barrier designs
The FOD2743BS delivers 5000Vrms galvanic isolation between input and output, meeting the creepage and clearance requirements for reinforced insulation in industrial power supplies, motor drives, and PLC digital inputs. With a current transfer ratio (CTR) guaranteed between 50% and 100% at 1 mA forward current, the part provides a predictable gain window that simplifies logic-level translation without overloading the output transistor. The output transistor is rated for 70 V collector-emitter and 50 mA continuous current, sufficient to drive a downstream logic gate or a low-power relay coil directly.
Sourcing and lifecycle status
The package is — not tape-and-reel — which may affect pick-and-place handling for high-volume assembly lines. Confirm your feeder compatibility before committing.
Temperature grade and environment fit
Rated for -40°C to 85°C ambient operation, the FOD2743BS suits outdoor telecom cabinets, factory-floor sensor interfaces, and HVAC controllers where the enclosure sees seasonal temperature swings. The 8-SMD Gull Wing footprint allows visual inspection of solder joints after reflow, a practical advantage for prototype builds and low-volume production where X-ray inspection is not routine.