1N5234BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5234BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 6.2 V at a test current of 20 mA. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device features a hermetically sealed DO-213AA (MELF) package with metallurgically bonded end caps. Electrical characteristics include a maximum dynamic impedance of 7.0 Ohms, a reverse leakage current of 5.0 µA at 5.0 V, and a positive temperature coefficient of +0.045 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bond for environmental stability.
• Surface mount equivalent to the JEDEC registered 1N5221 through 1N5281 series.
• Inherently radiation hard per Microsemi documentation.

Single Zener Diodes Applications

• Voltage regulation in broad operating current and temperature ranges.
• ESD protection circuits requiring non-sensitive components.
• Radiation-hardened electronic systems.

Single Zener Diodes Procurement Notes

Verify the specific suffix against the manufacturer's nomenclature guide to confirm tolerance levels and RoHS compliance status. Ensure the ordering part number matches the required reliability level, as commercial versions differ from screened MIL-PRF-19500 options. Confirm package dimensions and polarity markings align with the design footprint before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount Zener diode is required for high-reliability applications. The DO-213AA package provides a direct replacement for axial-leaded equivalents while maintaining hermetic sealing. Consider the positive temperature coefficient for precision biasing requirements above 5.6 V.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which covers Zener voltages from 2.4 V to 200 V. The series offers various tolerance options identified by suffix letters, including 1%, 2%, 5%, and 10%. All variants share the same metallurgically bonded glass surface mount construction.

Single Zener Diodes Replacement Considerations

The 1N5234B-1 is an available axial-leaded alternative within the same product family.

Single Zener Diodes FAQ

What is the polarity marking on the 1N5234BUR-1?

The cathode is indicated by a band on the device. The diode must be operated with the banded end positive with respect to the opposite end for Zener regulation.

Is the 1N5234BUR-1 sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD according to MIL-STD-750 method 1020.