PS2761-1

Overview

The PS2761-1 is a high isolation voltage optocoupler manufactured by CEL. It integrates a Gallium Arsenide (GaAs) infrared emitting diode with an NPN silicon phototransistor in a compact 4-pin SOP package. The device provides electrical isolation between input and output circuits, rated at 3750Vrms. Key electrical specifications include a reverse voltage of 6 V and a power dissipation capacity of 150 mW. It operates within a temperature range from -55°C to +100°C.

Feature Summary

• Integrates a GaAs LED and NPN silicon phototransistor for signal transmission
• Provides high voltage isolation capability between input and output sides
• Designed for reliable operation across extended industrial temperature ranges

Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in measurement equipment

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm pinout and packaging variations. Ensure compatibility with existing PCB footprints and thermal management requirements. Confirm that the operating temperature range meets the environmental conditions of the final assembly. Cross-reference manufacturer documentation to validate authenticity and lot traceability before procurement.

Selection Notes

Select this component when galvanic isolation is required between low-voltage control signals and higher-voltage loads. Consider the 3750Vrms isolation rating for safety compliance. Evaluate the NPN phototransistor output characteristics against load requirements. Verify that the SOP package size fits the available board space constraints.

Part Context

This part belongs to the family of transistor output optoisolators designed for general-purpose isolation applications. It serves as a bridge between different voltage domains while maintaining signal integrity. The technology relies on optical coupling to prevent ground loops and protect sensitive circuitry from electrical noise or transients.

Replacement Considerations

Check for direct replacements such as the PS2761-1-F3-A variant which shares similar core specifications but may differ in packaging or reel configuration. Verify pin compatibility and electrical ratings before substituting.