1N5228BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5228BUR-1/TR is a surface mount Zener voltage regulator housed in a hermetically sealed DO-213AA (MELF) package. It provides a nominal Zener voltage of 3.9 V with a 5% tolerance at a test current of 20 mA. The device features a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a maximum reverse leakage current of 10 µA at 43 V, a dynamic impedance of 23 Ohms at the test current, and a temperature coefficient of -0.060 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Voltage regulation across a broad operating current and temperature range
• Minimal capacitance for high-frequency applications
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation in harsh environments
• Reference voltage sources
• Protection circuits requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the tape and reel packaging configuration aligns with automated assembly requirements. Ensure the component meets the necessary reliability screening standards if intended for military or aerospace use. Cross-reference the manufacturer datasheet for any recent production changes or obsolescence notices before finalizing procurement plans.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The DO-213AA package offers a direct footprint equivalent to the axial 1N5228 series. Consider the negative temperature coefficient for low-voltage designs. Verify thermal derating curves against the expected ambient conditions and power dissipation limits on the printed circuit board.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 W Zener regulators. These devices serve as surface mount equivalents to the JEDEC registered 1N5221 to 1N5281 axial-leaded series. The series covers a voltage range from 2.4 V to 200 V. They are available in various tolerance grades and can be screened to MIL-PRF-19500 standards.

Single Zener Diodes Replacement Considerations

The 1N5228B-1 is an axial-leaded equivalent within the same family. Other parts in the series share the same package but differ in voltage ratings.