1N5229BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5229BUR-1/TR is a surface mount Zener diode in the 1N5221BUR-1 to 1N5281BUR-1 series. It provides a 4.3V nominal voltage with a ±5% tolerance at a test current of 20mA. The device operates within a -65°C to +175°C junction temperature range and dissipates up to 0.5W. Packaged in a hermetically sealed DO-213AA (MELF) glass case, it features an internal metallurgical bond. The '/TR' suffix indicates tape and reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bond
• Surface mount equivalent to JEDEC registered axial-leaded 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 in harsh environments
• Protection circuits requiring ESD robustness

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the TR suffix for tape and reel packaging. Confirm RoHS compliance status as commercial versions are available while others may not be. Ensure the required voltage tolerance matches the 'B' designation for ±5%. Check availability of MIL-PRF-19500 screening if high-reliability requirements apply.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is needed for standard Zener voltages between 2.4V and 200V. The DO-213AA package offers a compact footprint compared to axial leads. Consider the wide operating temperature range for applications exceeding standard commercial limits. Verify thermal derating curves against expected ambient conditions.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5-watt Zener regulators. These parts serve as surface mount equivalents to the popular JEDEC registered 1N5221 to 1N5281 series. The series covers voltages from 2.4V to 200V in a metallurgically bonded configuration.

Single Zener Diodes Replacement Considerations

The 1N5229AUR-1 serves as a parameter-equivalent alternative with different tolerance specifications.