PS2765-1

Overview

The CEL PS2765-1 is a single-element optocoupler featuring an AC input response and NPN silicon phototransistor output. It provides 3750 Vrms isolation voltage within a 4-pin SOP plastic package. Key electrical parameters include a collector-emitter breakdown voltage of 40 V, a nominal current transfer ratio of 100%, and a maximum forward current of 50 mA. The device operates between -40°C and +100°C with a maximum dark power of 100 nA.

Feature Summary

• AC input response capability for direct mains sensing applications
• High isolation voltage rating of 3750 Vrms
• Integrated NPN silicon phototransistor output stage

Applications

• Mains voltage detection circuits
• Switching power supply feedback loops
• Microprocessor system interface isolation

Procurement Notes

Verify the specific suffix (e.g., E4, F3) against the manufacturer's current production status, as variants may differ in compliance or packaging. Confirm lead times and availability directly with authorized distributors, noting that some listings indicate obsolete status for certain base part numbers.

Selection Notes

Select this component when AC line sensing is required without external rectification. Ensure the 40 V collector-emitter voltage rating exceeds the peak sensed voltage. Verify that the 100% CTR meets the drive requirements of the downstream logic or transistor circuit under all operating temperature conditions.

Part Context

This part belongs to the NEC/CEL high-isolation optocoupler family designed for industrial and commercial power electronics. It utilizes GaAs LED technology coupled with silicon phototransistors to achieve robust signal transmission across isolated barriers while maintaining compact SOP footprint dimensions.

Replacement Considerations

Check for direct pin-compatible substitutes such as the PS2865-1 or PS2761-1 series from compatible manufacturers. Verify that replacement parts maintain the same AC input response characteristic and 3750 Vrms isolation rating to ensure circuit compatibility.