PS2845-4A-A

Overview

The PS2845-4A-A is a four-channel optically coupled isolator manufactured by CEL. It integrates GaAs light-emitting diodes with NPN silicon phototransistors to provide electrical isolation between input and output circuits. The device features a 1500Vrms voltage isolation rating and operates within a temperature range of -40°C to +100°C. It utilizes a 12-pin ultra-shrink SOP package, designed for high-density applications requiring compact form factors.

Feature Summary

• Four independent channels in a single miniature package
• High voltage isolation capability
• Integration of GaAs LED and NPN phototransistor

Applications

• Industrial control systems
• Communication equipment signal isolation
• Power supply feedback loops

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's current datasheet to confirm pinout compatibility and packaging variations. Ensure the order matches the exact part number including all alphanumeric codes to avoid receiving variants with different electrical characteristics or mechanical dimensions.

Selection Notes

Select this component when multiple isolated channels are required in a space-constrained design. The four-channel configuration reduces board space compared to using individual single-channel isolators. Verify that the NPN phototransistor output type meets the switching speed and load requirements of the target application circuit.

Part Context

This part belongs to the PS2845 series of single transistor optocouplers. The series is characterized by its small footprint and multi-channel capabilities, catering to modern electronics that demand high integration density while maintaining safety isolation standards.

Replacement Considerations

Check for direct substitutes such as PS2845-4A-F3 or PS2845-4A-AX from compatible manufacturers. Confirm that any replacement maintains the same 12-pin SOP package and channel count to ensure mechanical fit without PCB redesign.