PS2503-1-M-A

Overview

The PS2503-1-M-A is a single-channel transistor output optocoupler manufactured by CEL. It features an NPN phototransistor output and is housed in a 4-DIP package with through-hole mounting. Key electrical specifications include a maximum collector-emitter voltage of 40 V, a maximum collector current of 30 mA, and a forward current of 80 mA. The device provides high isolation with a rated insulation voltage of 5000 Vrms. Operating characteristics include a typical current transfer ratio of 400% at 1 mA input, a maximum power dissipation of 150 mW, and a wide operating temperature range from -55°C to +100°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using an LED and NPN phototransistor configuration.
• Offers high dielectric strength with a 5000 Vrms insulation voltage rating for safety-critical applications.
• Delivers high current transfer efficiency suitable for driving loads directly or interfacing with logic circuits.

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix 'M' against official datasheets, as it may indicate a specific packaging variant or compliance status not universally standardized across all distributors. Confirm end-of-life status with the manufacturer, as availability may be limited. Ensure the 4-DIP footprint matches the target PCB design constraints before procurement.

Selection Notes

Select this component when a single channel with moderate speed and high CTR is required. Compare the 40 V collector-emitter voltage limit against the load requirements. Verify that the 80 mA forward current capability aligns with the driving circuit's output limits. Consider the DIP-4 package size relative to available board space.

Part Context

This part belongs to the PS2503 series of transistor output optocouplers from CEL. The series is designed for general-purpose isolation tasks. The 'M' suffix typically denotes a specific manufacturing lot or packaging type, distinguishing it from standard variants like PS2503-1-A. It shares core electrical characteristics with other members of the PS2503 family.

Replacement Considerations

Direct substitutes may include PS2503-1-A or PS2503L-1-A, provided the pinout and electrical ratings are compatible. Verify that any replacement maintains the 5000 Vrms isolation rating and fits the 4-DIP package. Check if the alternative part meets the same current transfer ratio and switching speed requirements.