PS2381-1Y-V-L-AX

Overview

The PS2381-1Y-V-L-AX is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It integrates a Gallium Arsenide (GaAs) infrared emitting diode with an NPN silicon phototransistor in a compact 4-pin LSOP surface-mount package. The device provides high isolation performance with a rated insulation voltage of 5000 Vrms and a minimum creepage distance of 8 mm. Key electrical specifications include a maximum collector-emitter voltage of 80 V, a collector current capacity of 50 mA, and a forward voltage of 1.1 V at a forward current of 5 mA. The unit supports a wide operating temperature range from -40°C to +115°C.

Feature Summary

• High isolation voltage capability of 5000 Vrms for robust signal transmission across isolated circuits
• Compact 4-pin LSOP package design optimized for high-density printed circuit board layouts
• Wide operating temperature range extending up to 115°C for reliable performance in demanding environments

Applications

• Industrial control systems requiring galvanic isolation
• Consumer appliances with high-voltage interface requirements
• Power supply feedback loops for signal isolation

Procurement Notes

Verify the specific suffix 'V' indicates the required 8 mm minimum creepage distance, as this distinguishes it from standard variants. Confirm RoHS compliance status through official documentation before integration. Check current availability as distribution may vary by region. Ensure the LSOP-4 footprint matches the target PCB design constraints. Validate that the NPN phototransistor output aligns with the receiving circuit logic requirements.

Selection Notes

Select this component when high isolation voltage and small form factor are critical. The 5000 Vrms rating suits applications needing strong dielectric strength. The NPN output type determines compatibility with pull-up resistor configurations. Consider the 115°C max operating temperature for thermal management needs. Verify the 50 mA collector current limit meets load requirements without exceeding absolute maximum ratings.

Part Context

This part belongs to the Renesas PS2381 series of optically coupled isolators. The series utilizes a GaAs LED and NPN phototransistor architecture. The PS2381-1 variant specifically denotes a single-channel configuration. The LSOP package offers a space-saving alternative to traditional DIP formats while maintaining necessary isolation distances for safety standards.

Replacement Considerations

Direct substitutes within the same family include PS2381-1Y-F3-AX or PS2381-1Y-V-F3-AX. Verify if the 'F3' tape-and-reel packaging is acceptable compared to the 'L' cut-tape format. Ensure replacement parts maintain the 5000 Vrms isolation and 8 mm creepage distance specifications.