FOD817BW

Overview

The FOD817BW is a single-channel phototransistor optocoupler featuring a gallium arsenide infrared emitting diode coupled to a silicon NPN phototransistor. It utilizes a 4-pin dual in-line package (DIP-4) designed for through-hole mounting. The device provides high isolation voltage of 5000Vrms between input and output circuits. It supports Pb-free IR reflow soldering processes. The component guarantees a minimum collector-emitter breakdown voltage (BVCEO) of 70V. Current transfer ratio specifications range from 130% to 260% at a forward current of 5mA.

Feature Summary

• High input-output isolation voltage capability
• Compatible with lead-free IR reflow soldering
• Compact four-pin dual in-line package design
• Guaranteed minimum collector-emitter breakdown voltage

Applications

• Power supply regulators
• Digital logic inputs
• Microprocessor inputs

Procurement Notes

Verify the specific suffix designation during procurement, as Fairchild Semiconductor has been integrated into ON Semiconductor. Ensure the ordering part number reflects current system requirements and nomenclature standards. Confirm compliance with RoHS directives and check for any updated datasheet revisions that may affect pinout or electrical characteristics relative to legacy documentation.

Selection Notes

Select this component when high isolation voltage is required for signal transmission between isolated circuits. The specified current transfer ratio range suits applications needing moderate gain. Consider the DIP-4 package constraints for PCB layout. Verify thermal management requirements against the operating temperature range specified in the official datasheet for the intended environment.

Part Context

This device belongs to the FOD817 series of high operating temperature phototransistor optocouplers. The series includes variants with different current transfer ratio groupings, such as A, B, C, and D. The FOD817BW specifically denotes the B-group binning for current transfer ratio. These components are designed for general-purpose isolation in digital and analog signal interfaces.

Replacement Considerations

Direct replacements include other FOD817 series variants like FOD817B or FOD817C, provided their current transfer ratio ranges match the circuit design requirements. Cross-reference with ON Semiconductor equivalents if sourcing from the integrated manufacturer. Verify pin compatibility and isolation voltage ratings before substitution.