1N5274BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5274BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 130 V and a 5% tolerance. It operates within a temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device utilizes a hermetically sealed DO-213AA (MELF) package with metallurgically bonded end caps. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at the rated voltage, a dynamic impedance of 94 Ohms at the test current of 0.95 mA, and a positive temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bond for environmental stability.
• Surface mount form factor providing a direct equivalent to traditional axial-leaded JEDEC registered devices.
• Inherently radiation hard construction suitable for demanding operational environments.

Single Zener Diodes Applications

• Voltage regulation in broad operating current and temperature ranges.
• Reference voltage generation in precision electronic circuits.
• Overvoltage protection in sensitive semiconductor components.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the tape and reel packaging configuration aligns with automated assembly requirements. Ensure the component meets the necessary reliability screening standards if intended for military or aerospace applications.

Single Zener Diodes Selection Notes

Select this component when a robust surface mount solution is required for high-voltage regulation. The metallurgically bonded construction offers superior thermal and mechanical performance compared to standard epoxy packages. Consider the positive temperature coefficient when designing circuits requiring stable reference voltages across wide thermal variations.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener diodes. The series provides a comprehensive range of voltages from 2.4 V to 200 V in a compact surface mount format. It serves as a modern replacement for legacy axial components while maintaining similar electrical performance profiles.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N5274 variants such as 1N5274B or 1N5274A depending on tolerance needs. Surface mount equivalents like the 1N5274BUR-1 without the TR suffix are available in bulk packaging. Verify pinout compatibility and thermal resistance values when substituting into existing designs.