FOD817X-5701W

Overview

The FOD817X-5701W is a single-channel phototransistor output optocoupler from onsemi, housed in a 4-pin DIP package. It provides electrical isolation with an insulation voltage of 5000 Vrms. The device features an NPN phototransistor output capable of handling a maximum collector current of 50 mA and a collector-emitter voltage of 70 V. Key switching parameters include typical rise and fall times of 18 µs. The input side supports a maximum forward current of 50 mA with a forward voltage of approximately 1.4 V. Operating temperatures range from -55°C to +110°C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Features fast switching performance with defined rise and fall times
• Compatible with standard digital logic interfaces via transistor output

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for circuit protection
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix '5701W' against official datasheets to confirm packaging details and compliance certifications. Ensure the selected variant matches the required isolation voltage and thermal specifications for the target application environment. Cross-reference part numbers with manufacturer documentation to avoid confusion with similar FOD817 series components.

Selection Notes

Select this component when high isolation voltage and moderate switching speed are required. Consider the 4-DIP package for through-hole mounting requirements. Evaluate the current transfer ratio and saturation voltage to ensure compatibility with downstream load requirements. Verify temperature range suitability for extreme environmental conditions.

Part Context

This component belongs to the FOD817 series of phototransistor optocouplers manufactured by onsemi. The series is widely used for general-purpose isolation applications. The FOD817X designation indicates specific pinout or packaging variations within the broader family. These devices are designed for reliable operation in industrial and commercial environments.

Replacement Considerations

Direct replacements may include other FOD817 variants such as FOD817B or FOD817A, provided pinouts and electrical characteristics match. Verify that substitute parts meet the same isolation voltage and current transfer ratio requirements. Check for equivalent packaging and thermal performance before substitution.