1N5254BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5254BUR-1/TR is a surface mount Zener voltage regulator housed in a DO-213AA package. It provides a nominal Zener voltage of 27 V with a tolerance of ±5%. The device dissipates up to 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical parameters include a maximum reverse leakage current of 100 nA, a dynamic impedance of 41 Ohms at the test current of 4.6 mA, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 series
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• ESD protection applications
• Radiation-hardened circuit designs

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the TR suffix for tape and reel packaging configuration. Confirm RoHS compliance status as it applies to commercial grade versions only. Ensure the ordering suffix matches the required voltage tolerance level. Cross-reference the manufacturer datasheet for any recent production changes or assembly site updates.

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 replacement for axial leaded equivalents. Consider the positive temperature coefficient characteristic suitable for voltages above approximately 5V. Verify thermal derating requirements against the intended ambient operating conditions.

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 a voltage range from 2.4 to 200 volts in a metallurgically bonded configuration. These components serve as surface mount equivalents to the popular JEDEC registered 1N5221 to 1N5281 series.

Single Zener Diodes Replacement Considerations

The 1N5254BUR-1 is listed as a parameter equivalent substitute for the 1N5254BUR-1/TR.