PS2521-1-A

Overview

The CEL PS2521-1-A is a photovoltaic output optoisolator featuring a single channel with high isolation voltage of 5000Vrms. It utilizes a large forward input current capability of 150 mA and provides a transistor output type with a collector-to-emitter voltage rating of 80 V. The device supports an output current of 50 mA per channel and operates with DC input signals. Packaged in a standard 4-DIP configuration, this component ensures reliable signal transmission across isolated circuits while maintaining robust electrical separation between input and output sides.

Feature Summary

• High isolation voltage rating for safe circuit separation
• Large forward input current capacity for efficient driving
• Transistor output type for versatile switching applications

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's latest datasheet to confirm pinout compatibility and material composition changes. Ensure the procurement order matches the exact package style and isolation voltage ratings required by the design specifications. Cross-reference the part number with official distributor catalogs to avoid counterfeit components.

Selection Notes

Select this component when high isolation voltage and large input current are critical requirements. Consider the transistor output characteristics for driving subsequent stages. Evaluate the thermal performance and operating temperature range against the application environment. Confirm that the 4-DIP package fits the available PCB footprint constraints.

Part Context

This part belongs to the PS2521 series of high-isolation photocouplers designed for demanding industrial applications. The series offers various output configurations and isolation levels. The PS2521-1-A specifically denotes the single-channel variant with transistor output, providing a balance of speed and isolation strength for general-purpose digital signal transfer.

Replacement Considerations

Check for direct substitutes from NEC or other manufacturers offering identical pinouts and electrical parameters. Verify that any replacement maintains the 5000Vrms isolation rating and 150 mA input current capability. Ensure the replacement part's output transistor characteristics match the original design requirements.