4N25-X007T

Overview

The Vishay 4N25-X007T is a single-channel optoisolator featuring an NPN phototransistor output with a base terminal. It provides 5000Vrms isolation voltage and operates within a -55°C to 100°C temperature range. Key electrical parameters include a maximum collector-emitter voltage of 70V, peak collector current of 50mA, and minimum current transfer ratio of 20% at 10mA forward current. Typical rise and fall times are 2µs each, with a maximum Vce(sat) of 500mV.

Feature Summary

• Integrates an infrared emitting diode with an NPN phototransistor for signal transmission across an isolation barrier.
• Includes a dedicated base terminal on the phototransistor to facilitate faster switching speeds and improved linearity.
• Delivers high dielectric isolation capability suitable for protecting low-voltage control circuits from high-voltage noise.

Applications

• General-purpose digital signal isolation in industrial control systems
• Switching power supply feedback loops
• Solid-state relay driver interfaces

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm package type and tape/reel specifications. Ensure the procurement source provides valid RoHS compliance documentation consistent with ROHS3 standards. Confirm that the component lot matches the latest PCN updates regarding mold compound or bond wire diameter changes issued by Vishay Semiconductor Opto Division.

Selection Notes

Select this component when a standard phototransistor output with base access is required for moderate-speed isolation applications. The 70V collector-emitter rating supports common logic-level loads. Consider the 2µs switching speed for timing constraints. Verify thermal management requirements for the SMD-6 package if operating near the upper temperature limit.

Part Context

This part belongs to the 4N2x-X series of surface-mount optocouplers from Vishay. It shares the functional architecture of the legacy DIP-6 4N25 but utilizes a 6-SMD gull-wing package designed for automated surface mount assembly processes. The X-series designation indicates specific manufacturing variations compliant with modern environmental directives.

Replacement Considerations

Direct pin-compatible substitutes within the same Vishay family include the 4N26-X007T, which offers identical electrical characteristics and packaging. Cross-manufacturer replacements require verification of isolation voltage, CTR, and package dimensions to ensure mechanical and electrical compatibility.