PS2381-1Y-F3-L-AX

Overview

The PS2381-1Y-F3-L-AX is a single-channel transistor-output optoisolator manufactured by CEL. It features an NPN phototransistor output with a maximum collector-emitter voltage of 80 V and a collector current of 50 mA. The device provides high isolation with a breakdown voltage of 5,000 Vrms and operates at ambient temperatures up to 115 °C. Key electrical parameters include a forward current of 5 mA, forward voltage of 1.1 V, saturation voltage of 300 mV, rise time of 4 µs, and fall time of 5 µs. It is housed in a compact 4-pin LSOP surface-mount package.

Feature Summary

• Provides robust electrical isolation between control and load circuits using a transistor output configuration.
• Capable of operating reliably in high-temperature environments up to 115 °C.
• Offers high dielectric strength with a 5,000 Vrms isolation voltage rating.

Applications

• Isolation of control signals from high-voltage load circuits
• Interface between microcontrollers and power switching devices
• Signal transmission across isolated ground planes

Procurement Notes

Verify the specific suffix (L-AX) against the manufacturer's latest documentation to ensure correct packaging and tape-and-reel specifications. Confirm availability status as supply may be limited or subject to factory order constraints. Cross-reference the Renesas/CEL part number to ensure compatibility with existing design files and ECAD models.

Selection Notes

Select this component when high isolation voltage and fast switching speeds are required for single-channel applications. The NPN phototransistor output is suitable for sourcing current to downstream logic or driver stages. Ensure the PCB footprint matches the 4-pin LSOP package dimensions and that the thermal environment supports the 115 °C operating limit.

Part Context

This component belongs to the PS2381 series of optoisolators, which are designed for general-purpose signal isolation. The series typically includes variants with different output types and packaging options. The PS2381-1Y-F3-L-AX specifically denotes the transistor output version in a small outline package, catering to space-constrained designs requiring reliable galvanic isolation.

Replacement Considerations

Direct substitutes may include other single-channel transistor optoisolators with comparable 5 kV isolation and similar pinout configurations. Verify that replacement parts meet the same 80 V collector-emitter voltage and 50 mA current ratings. Check for equivalent rise/fall times to maintain signal integrity in high-speed applications.