FOD852W

Overview

The FOD852W is a single-channel Photodarlington output optocoupler from the onsemi FOD852 series. It features a 4-pin MDIP package with DC input capability. Key electrical parameters include a maximum collector-emitter voltage of 300V and a maximum collector current of 150mA. The device offers a typical rise time of 300μs and a fall time of 100μs. It provides an isolation voltage of 5000Vrms and operates within a temperature range of -55°C to 110°C. Certifications include C-UL, UL, and VDE standards for safe electrical insulation.

Feature Summary

• High voltage isolation capability suitable for safety-critical applications
• Robust photodarlington output structure for high gain
• Compliant with international safety standards including UL and VDE

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal transmission across isolated barriers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and compliance with RoHS directives. Check for obsolescence status as this part may be discontinued. Ensure storage conditions meet specified humidity and temperature limits to maintain performance integrity upon installation.

Selection Notes

Select this component when high voltage isolation and high current transfer ratio are required. Consider the slow switching speed compared to transistor outputs. Verify that the 4-pin DIP package fits the PCB layout constraints. Ensure the operating temperature range aligns with the system environment requirements.

Part Context

This component belongs to the FOD852 family of photodarlington optocouplers designed for general-purpose isolation. It is manufactured by onsemi, formerly part of Fairchild Semiconductor's product line. The series is known for providing reliable signal transmission in electrically noisy environments while maintaining strict safety isolation boundaries between input and output circuits.

Replacement Considerations

FOD852300W is listed as a parametric equivalent substitute.