1N5998UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5998UR-1/TR is a surface mount Zener diode in the 1N5985BUR-1 to 1N6031BUR-1 series. It provides an 8.2 V nominal voltage with a 5% tolerance (B suffix). The device operates within a -65°C to +175°C range and dissipates up to 0.5 W. Packaged in a hermetically sealed DO-213AA MELF style, it features internal metallurgical bonds and tape-and-reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF package with internal metallurgical bonds
• Surface mount equivalent to JEDEC registered axial-leaded series
• High-reliability screened equivalents available per MIL-PRF-19500
• 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 the specific B suffix for 5% tolerance and UR-1 designation for surface mount reel packaging. Confirm RoHS compliance status as commercial versions may differ from military screening levels. Ensure the ordering suffix matches the required tape and reel specifications for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component for applications requiring high reliability and radiation hardness in a compact surface mount form factor. Consider the thermal resistance values when designing on FR4 PCBs. Verify that the 8.2 V breakdown voltage aligns with the circuit requirements and check dynamic impedance specifications for signal integrity needs.

Single Zener Diodes Part Context

This part belongs to the 1N5985BUR-1 through 1N6031BUR-1 series of 0.5 watt Zener voltage regulators. These devices serve as surface mount equivalents to the popular JEDEC registered 1N5985 to 1N6031 axial series. The series offers multiple voltage tolerances and is manufactured by Microsemi/Microchip Technology.

Single Zener Diodes Replacement Considerations

1N5998A

Single Zener Diodes FAQ

What is the maximum power dissipation rating?

The maximum power dissipation is 0.5 Watts at 25°C.

How is polarity indicated on the package?

Polarity is indicated by a cathode band; the banded end should be positive with respect to the opposite end for Zener regulation.