FODM1008R2

Overview

The FODM1008R2 is a single-channel transistor output optocoupler manufactured by onsemi, formerly Fairchild Semiconductor. It features an NPN phototransistor output and operates within a temperature range of -40°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 70V, a peak forward current of 50mA, and a typical forward voltage of 1.4V. The device provides an isolation voltage of 5000Vrms with a current transfer ratio ranging from 130% to 260%. Switching characteristics include a rise time of 5.7µs and a fall time of 8.5µs. It is housed in a compact 4-SOP surface-mount package.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical transmission.
• Utilizes an NPN phototransistor output stage for digital signal switching applications.
• Designed for surface-mount assembly in compact electronic systems.

Applications

• Industrial control system signal isolation
• Computer peripheral interface circuits
• Power supply feedback loop isolation

Procurement Notes

Verify the manufacturer designation carefully, as this component was originally developed by Fairchild Semiconductor and is now produced under the onsemi brand. Confirm that the specific suffix R2 corresponds to the tape-and-reel packaging format required for your automated assembly line. Ensure compliance with RoHS3 standards if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a single channel of galvanic isolation is required for low-speed digital signals. The 5000Vrms isolation rating suits applications involving significant potential differences between circuit grounds. Consider the 50mA collector current limit and 70V breakdown voltage to ensure compatibility with the load requirements of the receiving side of the isolation barrier.

Part Context

This device belongs to the FODM100x series of optocouplers, which are designed for general-purpose isolation tasks. The series offers a balance of performance and cost-effectiveness for consumer and industrial electronics. The transition from Fairchild to onsemi represents a continuation of the product line under new corporate ownership, maintaining the same technical specifications and form factor.

Replacement Considerations

The standard leaded version FODM1008 serves as a direct functional substitute, differing primarily in package type rather than electrical performance. Verify pinout compatibility before swapping between surface-mount and through-hole variants in existing designs.