PS2501AL-1-A

Overview

The PS2501AL-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 surface-mount package. The device provides high isolation voltage of 5000 Vrms, ensuring reliable signal transmission between isolated circuits. Key electrical parameters include a maximum collector-emitter voltage of 80V, a forward current of up to 50mA, and a power dissipation rating of 150mW. The component operates within a temperature range of -55°C to +100°C.

Feature Summary

• Integrates a GaAs light emitting diode with an NPN silicon phototransistor for efficient optical coupling.
• Features a lead bending type (Gull-wing) surface mount package designed for automated assembly processes.
• Provides high insulation voltage capability to ensure safety in isolated circuit applications.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessors and logic devices
• Power supply feedback loops requiring galvanic isolation

Procurement Notes

Verify the specific suffix configuration against official datasheets, as variations such as F3 or W-A may indicate different packaging or compliance statuses. Confirm availability status directly with authorized distributors, as this component may be subject to limited supply or end-of-life restrictions depending on the manufacturing batch and region.

Selection Notes

Select this component when a surface-mount solution is required for single-channel isolation. Ensure the design accommodates the Gull-wing package geometry. Verify that the required isolation voltage and current transfer ratio meet the specific application demands compared to through-hole alternatives like the PS2501A-1.

Part Context

This part belongs to the PS2501 series of high isolation voltage single transistor type photocouplers originally developed by NEC and now produced by CEL. The series includes variants with DIP and surface-mount packages. The AL suffix typically denotes the specific lead form factor for surface mounting, distinguishing it from standard DIP versions.

Replacement Considerations

Direct replacements include the PS2501A-1 for through-hole applications or other PS2501 series variants from CEL or Renesas. Verify pinout compatibility and package dimensions before substitution. Cross-reference with NEC original specifications if sourcing from legacy suppliers.