FOD852300

Overview

The onsemi FOD852300 is a single-channel transistor output optocoupler designed for high-voltage isolation applications. It features a Photodarlington output capable of handling a maximum collector current of 150 mA and a collector-emitter voltage of 300 V. The device provides a minimum isolation voltage of 5000 Vrms, ensuring robust safety in industrial environments. Key electrical parameters include a typical forward voltage of 1.4 V at a maximum forward current of 50 mA. The unit operates within a temperature range of -55°C to 110°C and utilizes a 4-pin MDIP through-hole package.

Feature Summary

• High isolation voltage capability of 5000 Vrms for enhanced safety
• Photodarlington output structure providing high current transfer ratio
• Wide operating temperature range suitable for demanding industrial conditions

Applications

• Industrial process control systems
• Power supply feedback loops
• Solid-state relay drivers

Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm pinout configuration and isolation ratings. Ensure the procurement source provides valid UL, IEC, or EN certification documentation as required by system safety standards. Confirm that the component matches the specified through-hole MDIP package dimensions for PCB compatibility.

Selection Notes

Select this component when high collector-emitter voltage and significant current drive are required from a single channel. The Photodarlington output offers higher gain compared to standard transistor outputs, making it suitable for driving loads directly without additional amplification stages. Consider the thermal management requirements given the power dissipation limits and operating temperature range.

Part Context

This part belongs to the FOD series of optocouplers from onsemi, which focuses on reliable signal isolation. The FOD852300 variant specifically targets applications requiring high voltage withstand capabilities and robust output performance. It serves as a critical interface component between low-voltage control circuits and high-voltage power stages.

Replacement Considerations

Direct substitutes may include other FOD852x series variants with compatible pinouts and electrical characteristics. Verify that any replacement maintains the 5000 Vrms isolation rating and 300 V collector-emitter voltage specification to ensure system safety compliance.