FOD815300W

Overview

The onsemi FOD815300W is a single-channel phototransistor output optocoupler housed in a 4-pin MDIP package. It features a DC input with a maximum forward voltage of 1.4V and a typical rise/fall time of 18μs. The device provides 5000Vrms isolation voltage and operates within a temperature range of -55°C to 110°C. Key electrical parameters include a maximum collector-emitter voltage of 70V, a maximum input current of 50mA, and a minimum current transfer ratio of 200%.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes a Darlington phototransistor output for high current transfer efficiency
• Designed for through-hole mounting in standard DIP packages

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Solid-state relay drivers

Procurement Notes

Verify the specific suffix '300W' corresponds to the required tape-and-reel packaging configuration. Confirm that the Darlington output type aligns with system switching speed requirements, as it differs from standard transistor outputs. Ensure compliance with UL and VDE standards if applicable to the end equipment certification.

Selection Notes

Select this component when high current transfer ratio is prioritized over switching speed. The Darlington configuration offers higher gain but slower response compared to single-transistor variants. Verify that the 70V collector-emitter voltage rating meets the load requirements. Consider thermal management within the specified operating temperature range.

Part Context

This part belongs to the FOD series of optocouplers from onsemi. It is distinct from the FOD817 series, which typically uses a standard phototransistor rather than a Darlington pair. The FOD815 variant specifically denotes the Darlington output architecture, providing different performance characteristics regarding gain and propagation delay.

Replacement Considerations

FOD817C300W serves as a functional substitute if lower current transfer ratio and faster switching are acceptable. Verify pinout compatibility and ensure the replacement meets the same isolation voltage and package dimensions.