PS2561AL-1-V-E3-H-A

Overview

The PS2561AL-1-V-E3-H-A is a single-channel transistor output optocoupler manufactured by CEL. It integrates a GaAs infrared emitting diode and an NPN silicon phototransistor within a surface-mount plastic package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 70 V, a maximum forward current of 10 mA, and a nominal current transfer ratio of 200%. The component operates within a temperature range of -55 °C to +100 °C and complies with lead-free manufacturing standards.

Feature Summary

• High isolation voltage capability for safe signal transmission across potential barriers
• Surface-mount Gull-wing package design for automated PCB assembly
• Lead-free construction compliant with environmental directives

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal interface circuits in noisy environments

Procurement Notes

Verify the manufacturer designation matches CEL specifications rather than Renesas or NEC equivalents, as part numbers may overlap across entities. Confirm the suffix indicates the specific tape-and-reel packaging format if required for production lines. Ensure the component meets RoHS compliance requirements for your region. Cross-reference the datasheet revision date to confirm parameter consistency. Validate that the 4-SMD package dimensions align with your footprint library.

Selection Notes

Select this component when a single-channel transistor output isolator is needed with moderate speed and high voltage tolerance. The 70 V collector-emitter voltage suits low-voltage logic interfacing. Consider the surface-mount form factor for space-constrained designs. Verify that the 200% CTR range meets the drive requirements of the receiving circuit. Ensure the operating temperature range covers the intended application environment.

Part Context

This part belongs to the PS2561 series of photocouplers, which are designed for cost-effective isolation solutions. The AL variant specifically denotes the lead-bending Gull-wing surface-mount package type. The E3 suffix typically indicates lead-free termination. The series is widely used in general-purpose isolation applications where reliability and safety certifications are required.

Replacement Considerations

Direct replacements include PS2561A-1 and PS2561L-1 variants from compatible manufacturers, provided pinouts and package dimensions match. Verify that substitute components offer equivalent isolation voltage and current transfer ratio characteristics. Check for identical safety approvals such as UL or CSA recognition.