FOD8802B

Overview

The FOD8802B is a dual-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output with a minimum current transfer ratio of 130% and a maximum of 500%. The device provides 2500 Vrms isolation voltage and supports a maximum forward current of 20 mA. Key electrical parameters include a collector-emitter breakdown voltage of 75 V, a collector current of 30 mA, and a saturation voltage of 400 mV. Typical switching times are 6 µs rise and 7 µs fall. It operates within a temperature range of -40°C to +110°C.

Feature Summary

• Dual-channel configuration for simultaneous signal isolation
• High current transfer ratio ensures reliable logic-level interfacing
• Robust 2500 Vrms insulation barrier for safety compliance

Applications

• Industrial control systems requiring galvanic isolation
• Consumer appliance interface circuits
• Computer peripheral communication links

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure that the ordered variant matches the required isolation voltage ratings and thermal performance characteristics for the intended application environment. Cross-reference component markings with official documentation to prevent counterfeit substitution.

Selection Notes

Select this component when dual-channel isolation is required in a compact surface-mount footprint. Consider the 130% minimum CTR for robust signal transmission without excessive input current. Evaluate the 75 V collector-emitter voltage rating against load requirements. Confirm compatibility with standard SOIC-8 PCB footprints during layout design.

Part Context

This part belongs to the FOD series of optocouplers from onsemi, designed for general-purpose isolation applications. It complements single-channel variants by providing two isolated paths in one package. The series emphasizes cost-effective solutions for consumer and industrial markets where space constraints and isolation safety standards are critical design factors.

Replacement Considerations

Direct substitutes may include other dual-channel SOIC-8 optocouplers from onsemi or competitors with matching 2500 Vrms isolation and similar CTR ranges. Verify pinout compatibility and thermal dissipation capabilities before substitution. Alternative parts must meet the same regulatory certifications for end-use equipment approval.