FOD817AW

Overview

The FOD817AW is a single-channel, transistor-output optocoupler from onsemi’s FOD series. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a peak forward current of 50 mA. The device provides 5000 Vrms isolation voltage and operates within a temperature range of -55°C to +110°C. Typical rise and fall times are 18 µs. Current transfer ratios vary by suffix, ranging from 200% to 600%. It is housed in a 4-DIP package.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes an NPN phototransistor for digital signal transmission
• Designed for through-hole mounting in standard DIP packages

Applications

• General-purpose digital signal isolation
• Microcontroller interface circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix (e.g., AW) against official datasheets to confirm current transfer ratio grades and packaging type. Ensure compliance with RoHS directives and check for lead-free status. Confirm pinout compatibility with existing PCB footprints before procurement.

Selection Notes

Select based on required isolation voltage and current transfer ratio specifications. Consider thermal management requirements given the operating temperature range. Verify package dimensions match assembly constraints. Compare performance metrics against alternative optocouplers if higher speed or different output types are needed.

Part Context

The FOD817AW belongs to onsemi’s FOD family of general-purpose optocouplers. This series is widely used for basic isolation tasks. The AW suffix typically denotes specific grading and packaging variations within the broader FOD817 product line.

Replacement Considerations

Compatible substitutes include FOD817A, FOD817B, FOD817C, and FOD817D. Verify that replacement parts match the required current transfer ratio and package style.