PS2505-4

Overview

The CEL PS2505-4 is a four-channel optoisolator featuring transistor outputs and an AC input response capability. It provides 5000Vrms voltage isolation between input and output circuits. The device utilizes GaAs light emitting diodes paired with NPN silicon phototransistors. Key electrical parameters include a maximum collector-emitter voltage of 80V, a typical forward voltage of 1.17V, and a current transfer ratio ranging from 80% to 600% at 5mA input. The unit operates within a temperature range of -55°C to 100°C and is housed in an 8-DIP package.

Feature Summary

• AC input response functionality for direct connection to AC signals without rectification
• High isolation voltage rating of 5000Vrms for robust circuit separation
• Four independent channels integrated into a single compact package

Applications

• Industrial control systems requiring AC signal isolation
• Solid-state relay driver circuits
• Microcontroller interface modules for AC loads

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to ensure compatibility with required pin configurations and performance specifications. Confirm that the obsolete status does not impact long-term supply chain requirements or replacement strategies for existing designs.

Selection Notes

Select this component when AC input detection is required without external rectifying components. Ensure the design accommodates the specified current transfer ratio variations and operating temperature limits. Verify that the 80V collector-emitter voltage meets the load switching requirements of the target application.

Part Context

This part belongs to the NEPOC series of high-density optocouplers. It shares architectural similarities with the PS2505-1 and PS2505L variants but offers increased channel density. The series is characterized by its ability to handle AC inputs directly, distinguishing it from standard DC-only optoisolators in general-purpose isolation applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.