PS2561L-2-V

Overview

The CEL PS2561L-2-V is a dual-channel transistor output optocoupler featuring a GaAs infrared LED and NPN silicon phototransistor. It provides 5000 Vrms isolation voltage with a typical current transfer ratio of 200%. Key electrical parameters include a collector-emitter breakdown voltage of 80 V, maximum forward current of 50 mA, and saturation voltage of 300 mV. Switching speeds are characterized by rise and fall times of approximately 3 µs and 5 µs respectively. The device operates within a temperature range of -55°C to +100°C.

Feature Summary

• Dual-channel configuration for independent signal isolation
• High isolation voltage rating of 5000 Vrms
• Fast switching performance with microsecond response times
• Lead-bending gull-wing surface mount package

Applications

• Programmable logic controllers
• Power supply circuits
• Telephone and fax equipment
• Factory automation systems

Procurement Notes

Verify the manufacturer designation carefully, as this part number has been produced by multiple entities including NEC and California Eastern Labs. Confirm that the specific datasheet revision matches your design requirements, particularly regarding safety approvals such as UL or CSA. Ensure the package type corresponds to the L2 lead bending specification before finalizing procurement orders.

Selection Notes

Select this component when dual-channel isolation is required in a compact surface mount footprint. It is suitable for applications demanding high input-output isolation voltage and moderate speed switching. Consider the 80 V collector-emitter voltage limit for load driving capabilities. Verify compatibility with available PCB land patterns for the gull-wing package style.

Part Context

This device belongs to the PS2561 series of high isolation voltage photocouplers. The L2 suffix indicates a specific surface mount package variant with bent leads. The series is widely used in industrial control and communication interfaces where galvanic isolation between low-voltage control circuits and higher-voltage power stages is necessary.

Replacement Considerations

Direct replacements include PS2561L2-1-V from Renesas or NEC sources. Cross-reference pinouts and isolation ratings when substituting with other dual-channel optocouplers. Ensure any alternative maintains the same 5000 Vrms isolation capability and compatible CTR specifications.