PS2381-1Y-AX

Overview

The PS2381-1Y-AX is a single-channel optoisolator featuring a photovoltaic output configuration manufactured by CEL. It provides high electrical isolation with a breakdown voltage of 5,000 Vrms and an isolation distance of at least 0.4 mm. The device operates within an ambient temperature range up to 115 °C. Key electrical parameters include a typical rise time of 4 µs and fall time of 5 µs. The output transistor supports a maximum voltage of 80V with a saturation voltage of 300mV. Current transfer ratios vary by suffix, ranging from 130% to 400% at 5mA input current.

Feature Summary

• Photovoltaic output architecture for galvanic isolation
• High isolation voltage rating of 5,000 Vrms
• Compact physical isolation distance of 0.4 mm minimum
• Extended operating temperature capability up to 115 °C

Applications

• Control circuit isolation in industrial automation systems
• Signal transmission between microcontrollers and power stages
• Noise immunity enhancement in sensitive measurement equipment

Procurement Notes

Verify the specific suffix (e.g., W, F3, L, M) against the required package type and electrical tolerances. Datasheets indicate variations in current transfer ratio and packaging depending on the final characters. Confirm the manufacturer source is CEL or Renesas to ensure component authenticity and parameter accuracy.

Selection Notes

Select this component when high-voltage isolation is required in a compact surface-mount footprint. The photovoltaic output requires external biasing, distinguishing it from transistor-output variants. Ensure the application voltage does not exceed the 80V output limit and that the thermal environment remains within the specified 115 °C maximum.

Part Context

This part belongs to the PS2381 series of optoisolators designed for general-purpose isolation applications. The series offers various package options and electrical characteristics tailored for different isolation requirements. The PS2381-1Y variant specifically denotes the photovoltaic output type, providing distinct switching characteristics compared to standard transistor outputs.

Replacement Considerations

Direct substitutes may include other CEL PS2381 variants with matching isolation ratings. Verify pin compatibility and output type before substitution. Cross-referencing with Renesas documentation is recommended for equivalent specifications.