PS2561AL1-1-V-D-A

Overview

The PS2561AL1-1-V-D-A is a single-channel optically coupled isolator manufactured by CEL. It integrates a Gallium Arsenide (GaAs) infrared emitting diode with an NPN silicon phototransistor to provide electrical isolation between input and output circuits. The device features a high isolation voltage rating of 5,000 Vrms. It is housed in a surface-mount package designed for reliable signal transmission across isolated barriers.

Feature Summary

• High isolation voltage capability of 5,000 Vrms
• Integration of GaAs LED and NPN silicon phototransistor

Applications

• Signal isolation in industrial control systems
• Microprocessor interface circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix 'V-D-A' against official datasheets to confirm lead configuration and tape-and-reel packaging details. Ensure compatibility with automated surface-mount assembly processes. Confirm that the 5,000 Vrms isolation rating meets the safety requirements of the target application environment.

Selection Notes

Select this component when a single-channel isolation barrier is required with high voltage withstand capability. The surface-mount format suits compact PCB designs. Verify that the NPN phototransistor output characteristics align with the load requirements of the receiving circuitry.

Part Context

This part belongs to the NEPOC series of transistor-output optocouplers from CEL. It shares core functional similarities with the PS2561A-1 family but differs in physical packaging and lead bending specifications. The AL1 variant typically denotes specific lead configurations compared to standard DIP versions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other single-channel NPN phototransistor optocouplers only if pinout and isolation voltage ratings match exactly.