PS2503L-1-A

Overview

The PS2503L-1-A is a single-channel transistor output optocoupler manufactured by CEL. It integrates a Gallium Arsenide (GaAs) infrared emitting diode and an NPN silicon phototransistor within a DIP-4 Gull Wing surface-mount package. The device provides electrical isolation with a rated insulation voltage of 5000 Vrms. Key electrical parameters include a collector-emitter saturation voltage of 250 mV maximum, a forward current of 80 mA, and a forward voltage of 1.3 V. The unit supports a maximum collector current of 30 mA and operates within a temperature range of -55°C to +100°C.

Feature Summary

• Optical coupling between GaAs LED input and NPN phototransistor output for signal transmission
• High isolation capability rated at 5000 Vrms for safety barrier applications
• Surface-mount DIP-4 Gull Wing packaging for automated assembly integration

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission in noisy electrical environments
• Power supply feedback loops

Procurement Notes

Verify the specific manufacturer designation as sources list both Renesas Electronics and CEL for this part number. Confirm RoHS compliance status through official documentation. Check lifecycle status, as some listings indicate Not Recommended for New Designs (NRND). Ensure the supplier provides valid traceability data for quality assurance purposes before finalizing procurement.

Selection Notes

Select this component when high isolation voltage and low saturation voltage are required for switching applications. The NPN phototransistor output suits digital logic interfacing. Verify that the 30 mA collector current limit meets load requirements. Consider the 20 us rise/fall times for speed-sensitive circuits. Ensure the SMD footprint matches the PCB layout constraints.

Part Context

This device belongs to the PS2503L series of optocouplers. It shares architectural similarities with other single-channel isolators but is distinguished by its specific pinout and electrical ratings. The series typically targets general-purpose isolation needs where compact surface-mount solutions are preferred over through-hole alternatives.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-referencing requires consulting official manufacturer substitution guides or equivalent parameter matching from other suppliers.