PS2561B-1-W-A

Overview

The PS2561B-1-W-A is a single-channel optically coupled isolator manufactured by CEL. It integrates a GaAs infrared emitting diode and an NPN silicon phototransistor within a compact 4-DIP package. The device provides a maximum isolation voltage of 5000 Vrms, ensuring robust galvanic separation between input and output circuits. It operates across a wide temperature range from -55 °C to +110 °C. Key electrical characteristics include a minimum collector-emitter breakdown voltage of 80 V and a maximum forward current rating of 40 mA. The component is designed for high reliability in industrial applications requiring signal transmission with electrical isolation.

Feature Summary

• Integrates a GaAs light emitting diode with an NPN silicon phototransistor for efficient optical coupling
• Provides high-voltage galvanic isolation rated at 5000 Vrms between input and output sides
• Features a standard 4-DIP plastic package suitable for through-hole mounting
• Operates reliably across an extended industrial temperature range

Applications

• Industrial automation control systems
• Power supply feedback loops
• Microcontroller interface isolation
• Signal transmission in noisy environments

Procurement Notes

Verify the manufacturer designation on the datasheet, as this part number is associated with both CEL and Renesas Electronics due to corporate acquisitions. Confirm that the specific suffix indicates the 4-DIP package configuration. Ensure compliance with RoHS standards if required by your application specifications. Cross-reference the official datasheet to confirm pinout compatibility before integration into existing designs.

Selection Notes

Select this component when high isolation voltage is critical for safety or noise immunity. The transistor output type is suitable for digital switching applications rather than linear signal transmission. Consider the package constraints and thermal management requirements for the operating environment. Verify that the input current requirements align with the driving circuit capabilities to ensure proper saturation of the phototransistor.

Part Context

This component belongs to the PS2561 series of photocouplers, which are widely used for general-purpose isolation. The series includes variants with different packaging options such as surface-mount configurations. The PS2561B-1 variant specifically denotes the DIP package version. These devices are commonly utilized in applications requiring reliable signal transfer across isolated boundaries in electronic systems.

Replacement Considerations

Compatible substitutes include the PS2561B-1-E3-A and PS2561BL2-1-E3-A. Verify pinout compatibility and electrical parameters before substitution. Surface-mount equivalents like the PS2561BL2-1 series may require PCB redesign. Always consult the latest datasheets to confirm functional equivalence and regulatory compliance.