4N24UTXV

Overview

The 4N24UTXV is a high-reliability optically coupled isolator manufactured by TT Electronics/Optek Technology. It consists of an infrared emitting diode and an NPN silicon phototransistor housed in a hermetically sealed TO-78 package. The device provides electrical isolation between input and output circuits, featuring a collector electrically isolated from the case. It is designed for operation in military and harsh environments, offering high current transfer ratio and base contact for conventional transistor biasing.

Feature Summary

• Hermetically sealed TO-78 package construction
• High current transfer ratio performance
• Collector electrically isolated from the case
• Base contact provided for conventional transistor biasing

Applications

• High-voltage isolation between input and output
• Electrical isolation in dirty environments
• Industrial equipment
• Medical equipment
• Office equipment

Procurement Notes

Verify the specific suffix 'U' against official TT Electronics documentation to confirm its exact meaning relative to the standard 'A' or 'TXV' variants. Ensure the component meets MIL-PRF-19500 processing requirements if intended for military applications. Confirm availability status as some Optek lines may be obsolete or subject to change.

Selection Notes

Select this component when hermetic sealing and case isolation are required for harsh environment reliability. The TO-78 package offers superior protection compared to plastic packages. Consider the base contact feature if external biasing control is necessary for the phototransistor operation within the circuit design.

Part Context

This part belongs to the 4N24 series of hi-reliability optocouplers. It shares the core functional architecture with variants like the 4N24ATXV but utilizes the 'U' suffix designation. The series is characterized by its use in demanding applications where standard commercial components would fail due to environmental stressors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.