PS2861-1-K-A

Overview

The PS2861-1-K-A is a single-channel optically coupled isolator manufactured by CEL. It integrates a Gallium Arsenide (GaAs) light-emitting diode with an NPN silicon phototransistor within a compact 4-SOP surface-mount package. The device provides electrical isolation with a rated voltage of 2500Vrms between input and output circuits. Key electrical specifications include a minimum Current Transfer Ratio (CTR) of 200% at a forward current of 5mA, ensuring reliable signal transmission across the isolation barrier.

Feature Summary

• Integrates GaAs LED and NPN silicon phototransistor for high-speed optical coupling
• Provides robust galvanic isolation with 2500Vrms rating
• Designed in a compact 4-SOP surface-mount package for space-constrained applications

Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in microprocessor interfaces

Procurement Notes

Verify the specific suffix -K-A against official CEL documentation to confirm pinout configuration and compliance standards. Ensure the component matches the required isolation voltage and CTR specifications for your circuit design. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the 4-SOP package dimensions align with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a single-channel isolated interface is required with moderate speed capabilities. The 2500Vrms isolation rating suits general industrial environments. Consider the CTR range and propagation delay characteristics relative to your system's timing constraints. The SOP package facilitates automated assembly. Evaluate thermal management needs based on the expected forward current and ambient operating conditions.

Part Context

This component belongs to the PS2861 series of optoisolators from CEL. The series typically offers various isolation voltages and package options. The PS2861-1 variant specifically denotes a single-channel configuration. The -K-A suffix indicates specific manufacturing or packaging details defined by CEL. This family is commonly used in applications requiring cost-effective isolation solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with equivalent devices from other manufacturers by comparing isolation voltage, CTR, and package dimensions. Consult official datasheets for potential alternatives such as the PS2861-1-F3-K-A if different performance metrics are required.