FOD817D300

Overview

The FOD817D300 is a single-channel transistor output optocoupler from onsemi's FOD series. It features a phototransistor output with an isolation voltage of 5000Vrms and operates within a temperature range of -55°C to 110°C. The device utilizes a 4-pin MDIP package for through-hole mounting. Key electrical parameters include a maximum collector-emitter voltage of 70V, a maximum collector current of 50mA, and a typical rise/fall time of 18μs. The minimum current transfer ratio is specified at 300%, while the maximum reaches 6%. The forward voltage is typically 1.4V with a maximum input current of 50mA.

Feature Summary

• Provides high-voltage isolation between input and output circuits using a phototransistor configuration.
• Offers reliable signal transmission in DC input applications with standard switching speeds.
• Complies with international safety standards including UL, VDE, and C-UL certifications.

Applications

• General-purpose signal isolation in industrial control systems
• Power supply feedback loops for circuit protection
• Interface circuits connecting microcontrollers to high-voltage loads

Procurement Notes

Verify that the specific suffix '300' corresponds to the required tape and reel packaging format rather than tube packaging when sourcing. Confirm that the component meets RoHS compliance requirements for your manufacturing process. Ensure the supplier provides valid datasheets matching the FOD817D300 designation to avoid confusion with similar FOD817 variants that may have different current transfer ratios or packaging types.

Selection Notes

Select this component when a standard-speed transistor output optocoupler is required for galvanic isolation. The 5000Vrms isolation rating suits applications demanding robust safety barriers. Consider the 18μs switching speed for non-high-frequency digital signals. The MDIP package facilitates easy prototyping and through-hole assembly processes compared to surface-mount alternatives.

Part Context

This part belongs to the widely used FOD817 family of optocouplers, known for their versatility in general-purpose isolation tasks. The FOD817D variant specifically denotes a particular binning of the current transfer ratio, ensuring consistent performance across production batches. It serves as a foundational component for basic isolation needs where high bandwidth is not the primary constraint.

Replacement Considerations

Compatible substitutes include other FOD817 series parts such as FOD817C or FOD817A, provided the current transfer ratio specifications align with the design requirements. Verify pinout compatibility and package dimensions before substitution to ensure mechanical fit.