PS2581AL1-A

Overview

The PS2581AL1-A is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a DC forward current limit of 30 mA. The device provides high isolation capability rated at 5000 Vrms. Typical switching performance includes rise and fall times of 3 µs and 5 µs, respectively. The unit operates within a temperature range of -55 °C to +100 °C and is housed in a lead-free plastic DIP-4 package.

Feature Summary

• Provides electrical isolation between input and output circuits via optical transmission
• Features a single channel configuration with NPN phototransistor output
• Designed for high insulation voltage applications ensuring circuit safety
• Constructed with lead-free materials compliant with environmental standards

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise immunity
• Solid-state relay driver applications

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before finalizing procurement plans. Confirm that the specific ordering suffix matches the required pin pitch and packaging format. Ensure compliance with RoHS3 regulations and check for any recent Product Change Notifications regarding label or manufacturing site updates. Validate that the supplier source is authorized to prevent counterfeit risks.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed is required. The 5000 Vrms isolation rating suits applications demanding robust barrier protection. Consider the 30 mA forward current limit for LED drive requirements. Evaluate the 70 V collector-emitter voltage against load specifications. Compare the DIP-4 package dimensions against available board space constraints.

Part Context

This part belongs to the PS2581 series of photocouplers from Renesas Electronics. The series is characterized by long creepage distance and high isolation voltage capabilities. It represents a legacy product line originally developed by NEC Electronics Corporation prior to corporate mergers. The component serves as a standard discrete isolation device for general-purpose electronic designs.

Replacement Considerations

PS2561AL1-1-A-N and PS2561AL1-1-A-P are listed as parameter equivalent alternatives.