PS2381-1Y-L-AX

Overview

The PS2381-1Y-L-AX is a single-channel photovoltaic output optoisolator manufactured by CEL. It provides electrical isolation between control and load circuits using a light-emitting diode and a photovoltaic detector array. The device features a high isolation voltage of 5,000 Vrms and an operating ambient temperature rating of 115 °C. It utilizes a minimum isolation distance of 0.4 mm to ensure safety compliance. The component is housed in a compact 4-SMD package, suitable for surface-mount applications requiring reliable signal transmission with galvanic isolation.

Feature Summary

• Photovoltaic output architecture for zero-offset voltage operation
• High dielectric strength with 5,000 Vrms isolation capability
• Extended thermal performance rated for 115 °C ambient operation
• Compact 4-SMD form factor with 0.4 mm minimum isolation gap

Applications

• Industrial control systems requiring safe isolation
• Power supply feedback loops
• Signal interfacing between microcontrollers and high-voltage loads

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm pinout and packaging variations. Ensure compatibility with reflow soldering profiles specified by the manufacturer. Cross-reference part numbers with Renesas Electronics or CEL documentation to confirm authenticity and lifecycle status before procurement.

Selection Notes

Select this component when zero-input current offset is critical for precision applications. Consider the photovoltaic output type for applications requiring no bias current on the output side. Evaluate the 5,000 Vrms isolation rating against system safety requirements. Confirm the 4-SMD package dimensions fit within the available PCB real estate constraints.

Part Context

This device belongs to the PS2381 family of optoisolators from CEL, now under Renesas Electronics. The family focuses on providing robust isolation solutions for industrial and consumer electronics. The PS2381 series is designed to replace traditional relay-based isolation in compact designs, offering faster response times and longer operational lifespans compared to electromechanical alternatives.

Replacement Considerations

Consult official substitution guides from Renesas Electronics for verified equivalents. Generic replacements may not match the specific photovoltaic output characteristics or isolation voltage ratings. Verify that any substitute component maintains the same 4-SMD footprint and thermal specifications.