JANTX1N4974DUS/TR

Single Zener Diodes Overview

The JANTX1N4974DUS/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 47 V with a tight tolerance of ±1%. The device supports a maximum power dissipation of 5 W and operates within an extended temperature range from -65 °C to +175 °C. Packaged in the E-MELF SMD form factor, it provides high-reliability voltage regulation suitable for demanding environments.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a tight ±1% tolerance on the 47 V Zener voltage.
• Engineered for surface-mount installation using the compact E-MELF package format.
• Capable of handling 5 W power dissipation while maintaining functionality across extreme temperatures.

Single Zener Diodes Applications

• Military aerospace electronic systems requiring high reliability
• Spacecraft power supply voltage regulation circuits
• Harsh environment industrial control equipment

Single Zener Diodes Procurement Notes

Verify that the specific suffix DUS/TR corresponds to the required E-MELF surface-mount package and reel configuration. Confirm that the ±1% tolerance variant meets the strict circuit requirements, as standard commercial versions may offer wider tolerances. Ensure compatibility with automated pick-and-place assembly processes due to the small surface-mount footprint.

Single Zener Diodes Selection Notes

Select this component when a 47 V reference requires superior accuracy compared to standard commercial grades. The E-MELF package is appropriate for designs prioritizing board space efficiency over through-hole robustness. Consider the thermal management capabilities required for 5 W dissipation in a surface-mount configuration during the layout phase.

Single Zener Diodes Part Context

This part belongs to the JAN series of radiation-hardened and high-reliability Zener diodes produced by Microchip Technology. The JAN prefix indicates compliance with military specifications, while the TXV suffix typically denotes enhanced screening or testing levels beyond the standard JAN grade. It is part of the broader 1N497x family adapted for modern surface-mount manufacturing.

Single Zener Diodes Replacement Considerations

JAN1N4974DUS/TR