FOD617A300W

Overview

The onsemi FOD617A300W is a single-channel, through-hole phototransistor output optocoupler in a 4-pin MDIP package. It provides 5000Vrms isolation voltage with a typical rise/fall time of 18μs. The device supports a maximum forward current of 50mA and features a minimum collector-emitter saturation voltage of 200mV. Operating temperature ranges from -55°C to +110°C.

Feature Summary

• Provides galvanic isolation via an infrared LED and NPN phototransistor pair
• Offers high insulation voltage capability for safety-critical signal transmission
• Designed for general-purpose digital signal isolation applications

Applications

• General-purpose digital signal isolation
• Microprocessor system interface circuits
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix '300W' against official datasheets to confirm packaging and tape-and-reel specifications. Ensure the component status is active, as some FOD617 variants may be obsolete. Cross-reference pinout configurations to match existing PCB footprints before procurement.

Selection Notes

Select this component when standard transistor output isolation is required. Compare CTR ranges against circuit requirements. Verify that the 50mA input current limit and 70V collector-emitter voltage meet system constraints. Check thermal dissipation limits for high-temperature environments.

Part Context

This part belongs to the FOD617 series of optocouplers. It shares functional similarities with other FOD817 variants but differs in specific electrical characteristics like CTR and saturation voltage. The series is widely used for basic isolation needs in industrial and consumer electronics.

Replacement Considerations

FOD817C300W offers similar isolation and package but different CTR ranges. FOD617D is a direct variant within the same family. Verify pin compatibility and electrical parameters before substitution.