1N5258BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5258BUR-1/TR is a surface mount Zener voltage regulator in the 1N5221BUR-1 to 1N5281BUR-1 series. It provides a 36 V nominal Zener voltage with a ±5% tolerance (suffix B) and operates at a test current of 3.4 mA. The device dissipates up to 0.5 W, features a maximum reverse leakage current of 0.1 µA, and has a dynamic impedance of 70 Ω. Packaged in a hermetically sealed DO-213AA MELF style for tape and reel delivery, it withstands junction temperatures from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 through 1N5281 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
• Applications requiring minimal capacitance
• Radiation-hardened circuit designs

Single Zener Diodes Procurement Notes

Verify that the TR suffix confirms tape and reel packaging compliant with EIA-481-B standards. Confirm RoHS compliance status as commercial grade versions are available with specific suffixes. Ensure the part number matches the required 5% voltage tolerance indicated by the 'B' designation within the 1N5258 series.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution matching the electrical characteristics of the axial 1N5258B is required. The DO-213AA package offers a metallurgical bond suitable for harsh environments. Consider the 70 Ω dynamic impedance and positive temperature coefficient for precision regulation needs.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener regulators. It serves as the surface mount counterpart to the popular JEDEC registered axial-leaded series, providing identical electrical performance in a compact MELF-style configuration designed for automated assembly.

Single Zener Diodes Replacement Considerations

The 1N5258B is the direct axial-leaded equivalent. For parameter-matched replacements, verify the 1N5258B from Central Semiconductor Corp or similar manufacturers offering the same 36 V, 500 mW specifications in compatible packages.