1N5254BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5254BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 27 V. It operates within a junction temperature range of -65 °C to +175 °C and dissipates up to 0.5 W. The device features a metallurgically bonded glass DO-213AA package, ±5% voltage tolerance, and a maximum reverse leakage current of 100 nA at 21 V. Dynamic impedance is 41 Ohms at the test current of 4.6 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed surface mount package with internal metallurgical bond
• Surface mount equivalent of JEDEC registered 1N5221 series
• Inherently radiation hard per Microsemi documentation

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 RoHS compliance status as commercial versions are available in compliant configurations while others may not be. Confirm specific suffix requirements for tape and reel packaging if automated assembly is required. Ensure sourcing from authorized distributors to guarantee authenticity and traceability of the metallurgically bonded construction.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount solution is required for 27 V regulation. The DO-213AA package provides a direct footprint alternative to axial leaded equivalents. Consider the positive temperature coefficient for high-voltage stability and verify thermal derating curves against the specific ambient conditions of the target application.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener voltage regulators. The series covers voltages from 2.4 to 200 volts in a metallurgically bonded configuration. It serves as the surface mount counterpart to the widely used JEDEC registered 1N5221 to 1N5281 axial series.

Single Zener Diodes Replacement Considerations

1N5254B-1 (axial leaded equivalent)