1N4127UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4127UR-1/TR is a surface mount Zener diode with a nominal voltage of 56 V and a maximum power dissipation of 500 mW. It utilizes the DO-213AA package and features an internal metallurgical bond. The device operates within a junction temperature range of -65 °C to +175 °C, has a maximum reverse current of 40 µA at 42.6 V, and exhibits a maximum noise density of 40 µV/√Hz.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF style package
• Internal metallurgical bond construction
• Qualified per MIL-PRF-19500/435 for high reliability applications
• Inherently radiation hard

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability aerospace and defense circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify that the TR suffix indicates tape and reel packaging as specified in the datasheet. Confirm the required qualification level (JAN, JANTX, JANTXV, or JANS) matches the specific application requirements before ordering. Ensure compatibility with the DO-213AA footprint on the printed circuit board.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability environments. The 56 V nominal voltage and 500 mW power rating define its operational limits. Consider the radiation hardness and metallurgical bond for harsh operating conditions.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR-1 through 1N4135UR-1 series of 500 mW metallurgically bonded glass surface mount Zener diodes. These devices are available in commercial and military qualification levels, providing extensive voltage selection from 1.8 to 100 volts with various tolerance options.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N4127UR-1 and CDLL4127-1. Verify that any substitute maintains the same DO-213AA package, 500 mW power rating, and necessary radiation hardness qualifications.