PS2501L-1-A

Overview

The PS2501L-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 compact DIP-4 package. The device provides high isolation voltage of 5000 Vrms, ensuring robust electrical separation between input and output circuits. Key electrical specifications include a maximum collector-emitter voltage of 80 V, a forward current of 30 mA, and a power dissipation rating of 150 mW. It operates reliably across a temperature range from -55°C to +100°C.

Feature Summary

• High isolation voltage capability for safe circuit separation
• Integrated GaAs LED and NPN phototransistor for efficient signal transfer
• Compact DIP-4 through-hole packaging for standard board integration

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Signal transmission in noisy electromagnetic environments

Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm pinout and performance characteristics. Confirm RoHS compliance status as required by project specifications. Check current availability as this component may be subject to lifecycle changes or limited stock conditions. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when high isolation voltage and reliable switching are required in a small footprint. Consider the 80 V collector-emitter voltage limit for load compatibility. Evaluate the 30 mA forward current requirement against the driving circuit capabilities. Ensure the operating temperature range meets the environmental conditions of the final application.

Part Context

This part belongs to the PS2501 series of high-isolation voltage photocouplers. The series includes variants with different channel counts and package types. The PS2501L-1-A specifically denotes the single-channel version with the 'L' indicating lead-free construction and 'A' specifying the package variant. This series is widely used in applications demanding robust electrical isolation.

Replacement Considerations

Cross-reference with PS2501-1-A for functional equivalence. Verify pinout compatibility before substitution. Check if alternative manufacturers offer direct replacements with identical electrical ratings and package dimensions.