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The PS2561L2-1-D-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 package designed for long creepage distance. The device provides high isolation voltage of 5000Vrms, ensuring reliable signal transmission across isolated circuits. Key electrical characteristics include a minimum current transfer ratio of 100% at 5mA forward current, a collector-emitter breakdown voltage of 70V, and a maximum operating temperature range from -55°C to 100°C.
Verify component authenticity through authorized distribution channels due to discontinued status in some regions. Confirm RoHS compliance and lead-free specifications match project requirements. Check datasheet revisions for any updates to mechanical dimensions or electrical limits before finalizing designs.
Select this component when high isolation voltage and surface-mount convenience are required. Ensure the 70V collector-emitter voltage rating meets circuit demands. Consider the 100% CTR minimum for logic level compatibility. Verify thermal management capabilities within the specified -55°C to 100°C operating range.
This part belongs to the PS2561 series of single transistor output optocouplers. It shares functional similarities with PS2561A-1 and PS2561AL-1 but differs in package type. The L2 variant specifically features wide lead bending for enhanced insulation performance compared to standard DIP packages.
Direct substitutes may include PS2561L2-1-E3-A-L or PS2561AL2-1-E3-A-L from NEC/Renesas. Verify pinout compatibility and electrical parameters before substitution. Alternative options should maintain equivalent isolation voltage and current transfer ratio specifications.