1N5226BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5226BUR-1 is a surface mount Zener voltage regulator diode housed in a DO-213AA (SOD80/MLL34) MELF package. It provides a nominal Zener voltage of 3.3 V at a test current of 20 mA with a maximum dynamic impedance of 28 Ohms and a maximum reverse leakage current of 25 µA. The device features a steady-state power dissipation rating of 0.5 W, an operating temperature range from -65°C to +175°C, and a voltage tolerance of ±5%.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High reliability aerospace and defense circuits
• Harsh environment electronics requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm the exact voltage tolerance class required for the application. Confirm RoHS compliance status as commercial versions are available while military screening options exist. Ensure the ordering documentation matches the intended JEDEC type number and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount equivalent to the axial 1N5226B is required. Consider the 0.5 W power dissipation limit and derating curves for thermal management. Verify that the 3.3 V breakdown voltage aligns with circuit requirements and check if tighter tolerances or specific reliability levels like JANTX are necessary.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as the surface mount counterpart to the popular JEDEC registered 1N5221 to 1N5281 axial series. The series covers Zener voltages from 2.4 V to 200 V in a metallurgically bonded configuration designed for high-reliability applications.

Single Zener Diodes Replacement Considerations

The 1N5226B in a DO-35 axial package is the direct industry standard equivalent.