PS2933-1-A

Overview

The PS2933-1-A is a single-channel transistor output optocoupler manufactured by CEL. It integrates a GaAs infrared LED and an NPN silicon phototransistor in a compact 4-pin Mini-Flat package. Key electrical parameters include a collector-emitter voltage of 350 V, a maximum collector current of 60 mA, and an isolation voltage of 2500 VRMS. The device features a typical rise time of 20 µs and fall time of 5 µs. It operates within a temperature range of -55°C to 100°C.

Feature Summary

• High collector-to-emitter voltage capability for robust isolation
• Compact 4-pin surface-mount packaging for space-constrained designs
• Integrated GaAs LED with NPN phototransistor for efficient optical coupling

Applications

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

Procurement Notes

Verify the specific suffix (e.g., -A, -F3) against the manufacturer's latest documentation to ensure correct pinout and performance characteristics. Confirm lifecycle status as components may be obsolete or recommended for non-new designs. Request official datasheets from authorized distributors to validate RoHS compliance and operating temperature ranges before integration into production.

Selection Notes

Select this component when high voltage isolation between input and output circuits is required in a small form factor. Ensure the application current does not exceed the 60 mA collector current limit. Consider the 2500 VRMS isolation rating for safety standards compliance. Verify that the switching speed meets the system timing requirements given the microsecond-scale rise and fall times.

Part Context

This part belongs to the PS2933 series of ultra-small flat optocouplers designed for high-voltage applications. It is functionally similar to other single-channel transistor output isolators but distinguished by its specific 350 V collector-emitter rating and Mini-Flat package style. The series is widely used in industrial and consumer electronics where galvanic isolation is critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult the manufacturer's obsolescence notice or cross-reference guides for equivalent devices if this part is no longer recommended for new designs.