PS2501L-1-E3-L-A

Overview

The PS2501L-1-E3-L-A is a single-channel transistor output optocoupler manufactured by CEL. It features a GaAs infrared LED coupled to an NPN silicon phototransistor, housed in a lead-bending (gull-wing) surface mount package. The device provides high isolation voltage of 5000Vrms and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a collector-emitter saturation voltage of 300mV max at 5mA, a forward voltage of 1.4V typical, and a current transfer ratio ranging from 200% to 500% at 5mA input current.

Feature Summary

• High isolation voltage capability for safe signal transmission between isolated circuits
• Surface mount gull-wing package design for automated assembly compatibility
• Wide operating temperature range suitable for demanding industrial environments

Applications

• Industrial automation control systems requiring galvanic isolation
• Signal interface circuits in measurement and testing equipment
• Power supply feedback loops for noise suppression

Procurement Notes

Verify the specific suffix L-A indicates the gull-wing surface mount variant with lead bending, distinct from standard DIP packages. Confirm RoHS compliance status via the official datasheet as manufacturing processes may vary. Check for obsolete status or lifecycle changes directly with CEL or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when surface mount technology is required for single-channel isolation applications. Ensure the 5000Vrms isolation rating meets system safety standards. Verify that the NPN phototransistor output configuration aligns with the downstream circuit logic requirements and that the operating temperature range covers the intended environmental conditions.

Part Context

This part belongs to the NEPOC series of high-isolation voltage photocouplers from CEL. It is functionally related to the PS2501L-1 family, differing primarily in the specific packaging and lead form factor indicated by the suffix. The series is designed for general-purpose signal isolation where compact surface mount solutions are preferred over through-hole alternatives.

Replacement Considerations

Direct substitutes may include other single-channel transistor output optocouplers with similar 5000Vrms isolation and gull-wing packaging. Verify pinout compatibility and electrical characteristics such as CTR and saturation voltage against original specifications before substitution.