1N5276BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5276BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA (MELF) surface mount package. It provides a nominal Zener voltage of 150 V with a 5% tolerance at a test current of 0.85 mA. The device features a maximum reverse leakage current of 5 µA and a dynamic impedance of 1500 Ohms at the test point. Operating temperatures range from -65°C to +175°C, with a positive temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Inherently radiation hard per Microsemi specifications
• Non-sensitive to ESD per MIL-STD-750 method 1020

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for your application. The 'B' indicates 5% tolerance and 'UR' denotes the metallurgically bonded surface mount package. Confirm RoHS compliance status if required, as commercial versions may differ from military screening options. Ensure the ordering nomenclature matches the exact reliability level needed.

Single Zener Diodes Selection Notes

Select this component when a high-voltage Zener reference is required in a compact surface mount form factor. The 150 V rating suits applications needing breakdown protection or reference voltages above standard low-voltage diodes. Consider the high dynamic impedance and thermal resistance when designing heat dissipation paths on FR4 substrates.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as a surface mount equivalent to the JEDEC registered axial-leaded 1N5221 to 1N5281 series. The series covers Zener voltages from 2.4 V to 200 V in a consistent metallurgically bonded configuration, allowing designers to transition from through-hole to surface mount layouts without changing the electrical family characteristics.

Single Zener Diodes Replacement Considerations

The 1N5276B-1 is the axial-leaded equivalent within the same product family. Verify pinout compatibility and thermal management differences between the DO-213AA surface mount package and the DO-35 axial leaded package before substitution.