PS2561-1-M-A

Overview

The CEL PS2561-1-M-A is a single-channel transistor output optocoupler featuring an NPN silicon phototransistor and a GaAs infrared LED. It provides high isolation voltage of 5000 Vrms between input and output circuits. The device operates within a temperature range of -55°C to +100°C and supports a maximum forward current of 50 mA with a power dissipation limit of 150 mW. This component is designed for signal isolation in electronic systems requiring reliable electrical separation.

Feature Summary

• Integrates a GaAs light emitting diode with an NPN silicon phototransistor for optical coupling
• Provides high isolation voltage capability between input and output sides
• Supports surface mount packaging configuration

Applications

• Signal isolation in industrial control systems
• Power supply feedback loops
• Microcontroller interface isolation

Procurement Notes

Verify the specific manufacturer designation as CEL (California Eastern Labs) against NEC/Renesas variants which share similar part numbering conventions. Confirm package type and lead-free status via official datasheets before procurement, as suffixes may indicate different packaging or compliance standards.

Selection Notes

Select this component when high isolation voltage and wide operating temperature range are required. Ensure the collector-emitter breakdown voltage and current transfer ratio meet circuit requirements. Verify compatibility with surface mount assembly processes if using the L2 variant.

Part Context

This part belongs to the PS2561 series of single transistor output optocouplers. The series includes DIP and surface mount versions with varying isolation voltages and current transfer ratios. The PS2561-1-M-A specifically denotes a CEL-manufactured unit within this family.

Replacement Considerations

NEC PS2561-1 or Renesas equivalents may serve as functional substitutes. Verify pinout compatibility and electrical parameters such as CTR and isolation voltage before substitution.