PS2703-1-F3

Overview

The PS2703-1-F3 is a single-channel optically coupled isolator manufactured by CEL, featuring a Gallium Arsenide (GaAs) light-emitting diode and an NPN silicon phototransistor. It provides high isolation voltage of 3750 Vrms and supports a collector current up to 50 mA. The device utilizes a plastic Small Outline Package (SOP) with four pins, designed for compact circuit board layouts. It offers a typical current transfer ratio of 50% at standard operating conditions, ensuring reliable signal transmission across isolated boundaries in industrial and consumer applications.

Feature Summary

• Optical isolation between input LED and output phototransistor
• High insulation voltage capability for safety compliance
• Compact SOP-4 plastic package design
• NPN silicon phototransistor output stage

Applications

• Industrial control systems requiring signal isolation
• Consumer electronics power supply feedback loops
• Computer peripheral interface circuits
• Measurement equipment isolation barriers

Procurement Notes

Verify the specific suffix F3 indicates the tape and reel packaging configuration as per manufacturer documentation. Confirm that the component meets required safety standards such as BSI EN 60950 or equivalent for your target market. Check for any RoHS compliance declarations if environmental regulations apply to your production process. Ensure the supplier provides original manufacturer traceability documents.

Selection Notes

Select this component when a single-channel transistor output isolator is needed with moderate speed and high voltage isolation. Consider the SOP-4 footprint constraints during PCB layout planning. Evaluate the current transfer ratio requirements against the driving LED current capabilities of your source circuit. Verify that the output voltage ratings exceed the maximum load voltage in the application environment.

Part Context

This part belongs to the PS2703 series of multi-photocouplers produced by CEL and formerly NEC. The series includes variants like PS2703-2 and PS2703-4 offering different channel counts. These devices are widely used in general-purpose isolation applications where cost-effective and reliable signal transfer is critical. The SOP package allows for automated assembly processes.

Replacement Considerations

Direct substitutes include other single-channel transistor output optocouplers with similar isolation voltages and pin configurations. Verify compatibility with existing PCB footprints and electrical characteristics such as CTR and propagation delay before substitution.