PS2381-1Y-AX

Overview

The PS2381-1Y-AX is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It features an NPN phototransistor output and operates with a maximum collector-emitter voltage of 80 V and a collector current of 50 mA. The device provides high isolation with a rated insulation voltage of 5000 Vrms and a minimum creepage distance of 8 mm. It supports a forward current of 5 mA with a typical forward voltage of 1.1 V. The unit is housed in a compact LSOP-4 surface-mount package, suitable for space-constrained designs requiring reliable electrical isolation.

Feature Summary

• High isolation voltage rating of 5000 Vrms for robust circuit protection
• Compact LSOP-4 surface-mount package design
• NPN phototransistor output configuration
• Extended operating temperature range up to 115 °C

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Microcontroller input/output isolation

Procurement Notes

Verify the lifecycle status before procurement as this component may be classified as Not Recommended for New Designs (NRND). Confirm that the LSOP-4 package dimensions match your PCB footprint requirements. Ensure the 5000 Vrms isolation rating meets your specific safety standards. Check for available parameter-equivalent alternatives if supply constraints exist.

Selection Notes

Select this component when a single-channel isolation solution with high voltage withstand capability is required. The NPN output type is suitable for sinking current applications. Consider the 80 V collector-emitter voltage limit for load compatibility. The LSOP-4 package offers a balance between isolation creepage distance and board space efficiency compared to larger DIP packages.

Part Context

This part belongs to the PS2381 series of DC input, single photocouplers from Renesas. The series utilizes a GaAs light emitting diode coupled with an NPN silicon phototransistor. The PS2381-1Y-AX variant specifically denotes the standard axial lead or specific trailing suffix configuration within the broader family of optically coupled isolators designed for general-purpose isolation tasks.

Replacement Considerations

Parameter-equivalent substitutes include PS2381-1Y-F3-AX and PS2381-1Y-V-AX. Verify that any replacement maintains the LSOP-4 package and 5000 Vrms isolation rating. Cross-reference pinouts and electrical characteristics to ensure functional compatibility.