PS2505-4-A

Overview

The PS2505-4-A is a four-channel transistor output optocoupler manufactured by CEL. It features high isolation voltage of 5000 Vrms and supports AC input response. The device utilizes NPN phototransistor outputs with a maximum collector-emitter voltage of 80 V and a maximum collector current of 50 mA. Key electrical parameters include a forward current of 80 mA, forward voltage of 1.4 V, and power dissipation of 120 mW. Operating temperature ranges from -55°C to +100°C.

Feature Summary

• Four-channel configuration for multi-circuit isolation
• High isolation voltage rating of 5000 Vrms
• AC input response capability
• NPN phototransistor output structure

Applications

• Multi-channel signal isolation in industrial control systems
• AC input detection circuits
• Isolation between microcontrollers and high-voltage loads

Procurement Notes

Verify component authenticity through authorized CEL distributors or certified suppliers. Confirm RoHS compliance status as documentation may vary by production batch. Check for obsolescence notices since the PS2505 series has seen discontinuation events in certain markets. Ensure storage conditions maintain moisture sensitivity levels appropriate for surface mount packages.

Selection Notes

Select this component when four isolated channels are required within a single package footprint. Consider the 5000 Vrms isolation barrier for safety-critical applications. Verify that the 80 V collector-emitter voltage meets load requirements. Evaluate thermal management needs given the 120 mW power dissipation limit in enclosed environments.

Part Context

The PS2505-4-A belongs to CEL's NEPOC series of high-isolation optocouplers. This series is designed for applications requiring robust electrical isolation between low-voltage control circuits and higher-voltage power stages. The four-channel variant provides space-efficient isolation solutions compared to using discrete single-channel devices.

Replacement Considerations

PS2505-4 is a direct functional equivalent without the suffix change. PS2505L-4-E3-A offers similar specifications in an SMD package. Verify pin compatibility and isolation ratings before substitution.