FODM8801A

Overview

The FODM8801A is a single-channel transistor output optocoupler from the OptoHiT series, featuring an NPN phototransistor in a Mini-Flat-4 surface-mount package. It provides an isolation voltage of 3750 Vrms and operates within a temperature range of -40°C to +125°C. Key electrical parameters include a maximum collector-emitter voltage of 75 V, a maximum collector current of 30 mA, and a forward voltage of 1.8 V at 20 mA input current. The device exhibits a current transfer ratio ranging from 160% to higher values, with typical rise and fall times of 5 µs and 5.5 µs respectively. Power dissipation is rated at 150 mW, and it supports a reverse voltage of 6 V.

Feature Summary

• Utilizes proprietary process technology for high operating temperature capability up to 125°C
• Delivers high current transfer ratio at very low input current levels
• Provides robust input-output isolation rated at 3750 VAC RMS

Applications

• Industrial control systems requiring high-temperature operation
• Consumer appliances with strict thermal constraints
• General-purpose signal isolation in compact designs

Procurement Notes

Verify the specific suffix designation to confirm the exact current transfer ratio bin and packaging configuration. Ensure that the Mini-Flat-4 footprint matches the target PCB layout requirements. Confirm compliance with RoHS directives and check for any specific handling instructions related to the sensitive phototransistor structure during assembly processes.

Selection Notes

Select this component when high thermal stability and compact form factor are critical. The Mini-Flat-4 package suits space-constrained applications. Compare the required current transfer ratio against system sensitivity needs. Consider the 75 V collector-emitter voltage limit for switching applications. Evaluate the 5 µs switching speed against the target signal frequency requirements.

Part Context

The FODM8801A belongs to onsemi's OptoHiT series, designed for enhanced performance in demanding environments. This series leverages advanced manufacturing techniques to achieve superior thermal characteristics compared to standard optocouplers. The family includes variants with different CTR bins and packaging options, such as tube or reel configurations, to support diverse manufacturing workflows.

Replacement Considerations

Direct substitutes may include other models within the FODM8801 series, such as the FODM8801B or FODM8801C, which share identical pinouts and mechanical dimensions but differ in current transfer ratio specifications. Verify that the alternative part meets the minimum CTR requirement for the specific application circuit.