4N24UTX

Overview

The 4N24UTX is a surface mount optically coupled isolator manufactured by TT Electronics/Optek Technology. It features an infrared emitting diode optically coupled to an NPN phototransistor output with a base terminal for improved switching performance. The device provides electrical isolation of 1000Vrms between input and output circuits. It is housed in a compact surface mount package designed for automated assembly processes, ensuring reliable signal transmission in applications requiring galvanic isolation.

Feature Summary

• Integrated base terminal on the phototransistor output to enhance switching speed and reduce storage time
• High isolation voltage rating of 1000Vrms for robust circuit protection
• Surface mount construction suitable for high-volume automated PCB assembly

Applications

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

Procurement Notes

Verify the specific suffix (TX) against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the component meets RoHS3 compliance requirements if mandated by your design specifications. Cross-reference the ordering part number with official distributor catalogs to confirm availability status and lead times prior to finalizing procurement plans.

Selection Notes

Select this component when a surface mount form factor is required for space-constrained designs. The integrated base terminal makes it suitable for applications demanding faster switching speeds compared to standard phototransistor outputs. Verify that the 1000Vrms isolation rating aligns with the safety standards applicable to your specific equipment category.

Part Context

This component belongs to the 4N2x series of general-purpose optocouplers from TT Electronics/Optek Technology. The series is widely recognized for providing reliable optical isolation in various electronic circuits. The UT variant specifically denotes the surface mount package style, distinguishing it from through-hole equivalents within the same functional family.

Replacement Considerations

Direct substitutes include other surface mount variants within the 4N24 series such as the 4N24UTXV. Verify pinout compatibility and isolation ratings before substitution. Generic replacements must match the NPN phototransistor output configuration and base terminal presence.