1N5279BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5279BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 180 V. It operates within a metallurgically bonded glass DO-213AA (SOD80/MLL34) package, providing a 0.5 W steady-state power dissipation rating. The device features a tight ±5% voltage tolerance and exhibits a positive temperature coefficient of +0.110 %/°C. Electrical characteristics include a maximum reverse leakage current of 6000 µA at the rated voltage and a dynamic impedance of 130 Ω.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction with internal metallurgical bonding for enhanced stability.
• Surface mount equivalent to JEDEC registered axial-leaded series in a MELF-style package.
• Inherently radiation hard design suitable for demanding environments.
• Non-sensitive to electrostatic discharge events.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges.
• Reference voltage sources requiring minimal capacitance.
• Protection circuits in avionics and military systems.

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against the part nomenclature chart to confirm tolerance levels and RoHS compliance status. Ensure that ordering requirements align with the manufacturer's screening options, such as MIL-PRF-19500 up-screening if applicable. Confirm tape and reel availability by checking for the TR suffix designation on the component marking.

Single Zener Diodes Selection Notes

Select this component when a robust surface mount solution is required for high-voltage regulation applications. The metallurgically bonded glass package offers superior environmental sealing compared to standard plastic packages. Consider the positive temperature coefficient for thermal compensation needs in precision circuits.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which provides a comprehensive range of Zener voltages from 2.4 V to 200 V. The series maintains consistent physical dimensions and electrical testing methodologies across all voltage ratings, facilitating standardized design integration for various power supply and protection requirements.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' equivalents in the DO-213AA package with matching 180 V Zener voltage and 0.5 W power rating. Verify that substitute components meet the same hermetic sealing and metallurgical bond specifications if radiation hardness or extreme environmental stability is required.

Single Zener Diodes FAQ

What is the temperature coefficient for the 1N5279BUR-1?

The temperature coefficient is +0.110 %/°C.

Is the 1N5279BUR-1 sensitive to ESD?

No, the device is non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.