PS2841-4B-A

Overview

The CEL PS2841-4B-A is a four-channel optically coupled isolator featuring GaAs light-emitting diodes and NPN silicon phototransistors. It provides 1500Vrms voltage isolation between input and output circuits. The device utilizes a 12-pin BSOP package with a width of 4.40mm, designed for surface-mount applications. It supports DC input signals and delivers transistor-type outputs. The component ensures electrical isolation in multi-channel signal transmission environments.

Feature Summary

• Contains four independent channels for simultaneous signal isolation
• Utilizes GaAs LEDs and NPN silicon phototransistors for optical coupling
• Provides high voltage isolation capability between input and output sides

Applications

• Multi-channel signal isolation in industrial control systems
• Interface circuits requiring electrical separation between logic levels
• Noise-immune data transmission in embedded systems

Procurement Notes

Verify the specific suffix 'A' against current manufacturer documentation to confirm availability status, as some variants may be obsolete. Ensure the 12-BSOP package dimensions match the target PCB footprint. Confirm that the 1500Vrms isolation rating meets the safety requirements of the end application. Check for any updated replacement recommendations from the manufacturer due to product lifecycle changes.

Selection Notes

Select this component when four isolated channels are required within a compact surface-mount footprint. The NPN phototransistor output is suitable for standard digital switching applications. Consider the 12-pin BSOP form factor for space-constrained designs. Verify that the GaAs LED input characteristics align with the driving circuit's current capabilities. Ensure the isolation voltage rating satisfies the system's safety standards.

Part Context

The PS2841-4B-A belongs to the PS2841 family of ultra-shrink SOP photocouplers. This series is characterized by its small package size relative to the number of channels. The 'B' designation typically indicates specific performance parameters or packaging variations compared to the 'A' variant. The part is manufactured by CEL (California Eastern Labs), now part of Renesas Technology Corp.

Replacement Considerations

Public confirmed substitute part numbers include PS2841-4A and PS2841-4A-AX from Renesas Technology Corp. These parts share the same core description and channel configuration. Verify pinout compatibility and package dimensions before substitution. Check if the specific 'A' suffix in the original part denotes a unique qualification or packaging requirement.