1N5228BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5228BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA surface mount package. It provides a nominal Zener voltage of 3.9 V at a test current of 20 mA with a 5% tolerance. The device features a maximum reverse leakage current of 10 µA and a dynamic impedance of 23 Ω at the test point. Operating temperatures range from -65°C to +175°C, with a temperature coefficient of -0.060 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 series
• Inherently radiation hard per Microsemi documentation
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources requiring minimal capacitance
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for your application, as the datasheet indicates that different suffix letters identify tighter voltage tolerances beyond the standard 5%. Confirm RoHS compliance status if required, noting that compliant versions are available on commercial grade only. Ensure the ordering nomenclature matches the desired reliability level and packaging options such as tape and reel.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is needed for low-voltage regulation applications requiring high reliability. The DO-213AA package offers a direct footprint replacement for axial-leaded equivalents. Consider the negative temperature coefficient for circuits sensitive to thermal drift below 5.6 V. Verify power derating curves against expected ambient temperatures to ensure operation within the 0.5 W steady-state limit.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which covers Zener voltages from 2.4 V to 200 V. The series provides a metallurgically bonded surface mount alternative to the traditional axial-leaded JEDEC registered diodes. The manufacturer offers various tolerance grades and screening levels, including MIL-PRF-19500 references, within this product family.

Single Zener Diodes Replacement Considerations

The datasheet identifies the 1N5228B-1 as an axial-leaded equivalent within the same series.