PS2561-1-D-A

Overview

The PS2561-1-D-A is a transistor output optocoupler manufactured by Renesas Electronics Corporation. It features a single channel with an NPN phototransistor output and a GaAs LED input. The device is housed in a 4-pin DIP package designed for through-hole mounting. Key electrical specifications include a maximum collector-emitter voltage of 80 V, a maximum collector current of 50 mA, and an isolation voltage of 5000 Vrms. The forward voltage is typically 1.4 V at a forward current of 80 mA.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Integrates a GaAs infrared emitting diode with an NPN silicon phototransistor for signal transmission.
• Designed for robust performance in environments requiring reliable galvanic isolation.

Applications

• Industrial control systems requiring isolated signal interfaces.
• Power supply feedback loops for voltage regulation.
• Microcontroller input/output isolation for noise immunity.

Procurement Notes

Verify the specific suffix 'D' against official Renesas documentation to confirm pinout configuration and mechanical dimensions, as variations exist within the PS2561 family. Ensure the component status is active for new designs, as some variants are marked as not recommended for new use. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a standard NPN phototransistor output is required for digital switching applications. Consider the 5000 Vrms isolation rating for safety compliance in mains-connected equipment. Evaluate the current transfer ratio requirements against the driving circuit capabilities to ensure sufficient output saturation. Verify that the DIP-4 package fits the available PCB footprint constraints.

Part Context

This component belongs to the PS2561 series of optocouplers from Renesas Electronics. The series includes variants such as PS2561-1-A and PS2561DL1-1Y-A, which share similar core technologies but differ in packaging, speed, or specific electrical characteristics. The PS2561-1-D-A represents a specific configuration within this lineage, utilizing the standard DIP-4 form factor common in legacy and industrial designs.

Replacement Considerations

Direct replacements may include other PS2561 series variants like PS2561-1-A if pin compatibility and electrical parameters align. Verify that substitute parts meet the same isolation voltage and current transfer ratio specifications. Check for equivalent package dimensions to ensure mechanical fit without PCB redesign.