1N5259BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5259BUR-1 is a surface mount Zener voltage regulator in the DO-213AA package. It provides a nominal Zener voltage of 39 V with a test current of 3.2 mA and a maximum dynamic impedance of 80 Ohms at IZT. The device features a maximum reverse leakage current of 800 µA and a temperature coefficient of +0.094 %/°C. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 thru 1N5281 series
• Inherently radiation hard per Microsemi specifications
• Non-sensitive to ESD

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High reliability applications requiring radiation hardness
• Surface mount designs replacing axial-leaded equivalents

Single Zener Diodes Procurement Notes

Verify the specific suffix 'B' indicates a 5% voltage tolerance as defined in the part nomenclature. Confirm RoHS compliance status, as commercial versions may differ from military screening options. Ensure the ordering suffix matches the required tolerance level and environmental rating for the intended application.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability circuits. The DO-213AA package offers a direct footprint replacement for traditional axial leads. Consider the positive temperature coefficient above 5.6V when designing for thermal stability across wide ambient temperature variations.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener voltage regulators. The series covers voltages from 2.4 to 200 volts in a metallurgically bonded configuration. It serves as the surface mount counterpart to the widely used JEDEC registered 1N5221 to 1N5281 axial series.

Single Zener Diodes Replacement Considerations

Direct surface mount replacements include other parts within the 1N5221BUR-1 thru 1N5281BUR-1 series. For axial lead equivalents, refer to the standard 1N5221 through 1N5281 series.