PS2561D-1Y-H-A

Overview

The PS2561D-1Y-H-A is a single-channel transistor output optocoupler manufactured by CEL. It integrates an aluminum gallium arsenide (AlGaAs) light-emitting diode and an NPN silicon phototransistor within a four-pin DIP package. The device provides high isolation voltage of 5000Vrms between input and output circuits. It operates over an extended temperature range from -55°C to 110°C, ensuring reliability in demanding environments. The component features low input current requirements and high collector-emitter breakdown voltage, making it suitable for precise signal transmission across isolated boundaries.

Feature Summary

• Integrates AlGaAs LED with NPN silicon phototransistor for efficient optical coupling
• Provides robust electrical isolation with 5000Vrms dielectric strength
• Operates reliably across wide temperature ranges from -55°C to 110°C
• Designed for compact surface-mount or through-hole integration

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Signal transmission in noisy electromagnetic environments
• Microcontroller interface circuits for level shifting

Procurement Notes

Verify the specific suffix 'H-A' corresponds to the required lead-free and halogen-free compliance status as defined by CEL documentation. Confirm that the 4-DIP package dimensions match your PCB footprint requirements. Ensure the operating temperature range aligns with your system's thermal constraints. Cross-reference the datasheet revision date to guarantee parameter accuracy. Validate that the manufacturer source is authorized to prevent counterfeit components.

Selection Notes

Choose this component when high isolation voltage and wide temperature operation are critical. The transistor output type suits digital switching applications rather than linear analog transmission. Consider the package style based on assembly method preferences. Evaluate the current transfer ratio requirements against your input drive capabilities. Ensure compatibility with downstream logic levels for reliable signal detection.

Part Context

This part belongs to the PS2561 series of optocouplers, which are widely used for general-purpose isolation tasks. The series includes various package options and performance grades. CEL continues production under Renesas Electronics branding following corporate acquisitions. The component represents a standard solution for cost-effective isolation in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include PS2561D-1Y-A and PS2561DL-1Y-H-A from the same manufacturer family. Verify pinout compatibility and isolation voltage ratings before substitution. Check if alternative packages like SMD variants meet spatial constraints. Ensure equivalent current transfer ratios to maintain circuit performance without redesign.