FOD814A

Overview

The FOD814A is a single-channel transistor output optocoupler featuring an inverse-parallel dual infrared LED input driving a silicon phototransistor. It provides 5000 Vrms isolation and operates within a -55°C to +105°C range. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 50 mA, and a typical forward voltage of 1.4 V. The device exhibits a current transfer ratio between 50% and 150%, with rise and fall times of 18 µs. Power dissipation is rated at 200 mW.

Feature Summary

• Dual infrared LED configuration for enhanced reliability
• High insulation voltage capability
• Wide operating temperature range

Applications

• General purpose signal isolation
• Industrial control systems
• Power supply feedback loops

Procurement Notes

Verify the specific suffix against the official datasheet to confirm package type and tape/reel specifications. Ensure the selected variant matches the required isolation voltage and thermal characteristics for the target application environment. Cross-reference manufacturer part numbers with distributor catalogs to confirm availability and compliance status.

Selection Notes

Select this component when high-speed switching is not critical but robust isolation is required. The dual LED structure offers superior fault tolerance compared to single LED designs. Consider the 18 µs propagation delay for timing-sensitive circuits. Evaluate thermal management requirements based on the 200 mW power dissipation limit in enclosed environments.

Part Context

This device belongs to the FOD814 series of phototransistor optocouplers. It utilizes gallium arsenide LEDs and silicon phototransistors. The series is designed for general-purpose isolation applications requiring reliable performance across industrial temperature ranges.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.