PS2801A-1-L-A

Overview

The PS2801A-1-L-A is a single-channel transistor output optoisolator manufactured by CEL. It features a high isolation voltage of 2500Vrms, ensuring robust signal transmission across isolated circuits. The device utilizes a small and thin 4-pin SSOP package with a 1.27 mm pin pitch, facilitating compact PCB layouts. Key electrical characteristics include a collector-emitter saturation voltage (Vce sat) of up to 300mV and an output current capacity of 50mA per channel. The component operates with a minimum Current Transfer Ratio (CTR) of 80% at 5mA forward current, providing reliable switching performance for digital and analog isolation applications.

Feature Summary

• High isolation voltage capability of 2500Vrms for safe circuit separation
• Compact 4-pin SSOP package design with 1.27mm pin pitch for space-constrained applications
• Transistor output configuration supporting up to 50mA output current

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix 'L-A' against official datasheets to confirm package type and lead-free status. Ensure compatibility with existing footprint designs due to the 4-SSOP form factor. Cross-reference manufacturer documentation for any updates on RoHS compliance or material declarations prior to final procurement decisions.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed and high voltage withstand is required. Consider the CTR specifications under your specific operating conditions to ensure adequate signal margin. Evaluate thermal management requirements based on the expected forward current and ambient temperature constraints in the target application environment.

Part Context

This part belongs to the PS2801 series of high-isolation voltage photocouplers from CEL. The series is designed for general-purpose isolation tasks where size and cost efficiency are critical. The PS2801A variant typically denotes specific electrical parameter tolerances compared to standard versions, offering consistent performance across industrial environments.

Replacement Considerations

Direct substitutes may include PS2801-1-L-A or PS2801A-1-F3-L-A, provided pinout and electrical ratings match. Verify package dimensions and isolation voltage ratings before substitution to maintain system safety integrity.