PS2503-4-A

Overview

The CEL PS2503-4-A is a transistor output optoisolator featuring four independent channels in a 16-DIP package. It provides 5000 Vrms isolation voltage and supports an NPN phototransistor output configuration. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a collector current of 50 mA per channel, and a current transfer ratio ranging from 80% to 600% at 5 mA forward current. The device operates within a temperature range of -55°C to +100°C with a power dissipation of 150 mW.

Feature Summary

• Four-channel architecture for multi-circuit isolation
• High-speed switching capability
• Low input current operation
• Wide operating temperature range

Applications

• Industrial automation control systems
• Power supply feedback loops
• Microcontroller interface isolation
• Signal transmission across isolated grounds

Procurement Notes

Verify the manufacturer designation carefully, as the PS2503 series originates from NEC/Renesas but is also distributed by CEL. Confirm the specific suffix '-A' matches your required RoHS compliance status and pinout compatibility. Check for obsolescence notices or lifecycle status changes before finalizing procurement plans.

Selection Notes

Select this component when four isolated channels are required in a single DIP package. Ensure the 80 V collector-emitter voltage rating exceeds your load requirements. Verify that the 50 mA collector current capacity is sufficient for the driven circuitry. Consider the 5000 Vrms isolation rating for safety compliance in high-voltage applications.

Part Context

This part belongs to the PS2503 family of low-input current, high-speed switching photocouplers. Originally developed by NEC, these components are widely used in industrial and commercial equipment requiring reliable galvanic isolation between control circuits and power stages.

Replacement Considerations

Direct substitutes may include other 4-channel DIP optocouplers with similar CTR and isolation ratings. Verify pin compatibility and electrical specifications against alternatives like the PS2501-4-A or equivalent Renesas/CEL variants.