1N3043BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N3043BUR-1/TR is a surface mount Zener diode in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 91 V with a 5% tolerance at a test current of 2.8 mA. The device features a maximum reverse leakage current of 10 µA and a dynamic impedance of 250 Ohms. It operates within a junction temperature range of -55 °C to +175 °C and dissipates up to 1.0 W DC power.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF construction for high reliability
• Metallurgically bonded internal contacts
• Qualified per MIL-PRF-19500/115 standards
• Leadless surface mount design

Single Zener Diodes Applications

• High-density circuit board mounting
• Low parasitic requirement applications
• Voltage regulation over broad operating ranges
• High-reliability military environments

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level and RoHS compliance status. Confirm tape and reel specifications align with automated assembly equipment requirements. Ensure the component meets the necessary environmental testing standards for the intended operational environment before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a leadless surface mount equivalent to the 1N3043B series is required. Consider the DO-213AB outline for low profile and high-density layouts. Evaluate the thermal resistance and derating curves if operating near maximum power dissipation limits. Verify compatibility with the mounting surface coefficient of expansion.

Single Zener Diodes Part Context

This part belongs to the 1N3016BUR-1 through 1N3045BUR-1 series, which are surface mountable equivalents to JEDEC registered 1N3016B-1 through 1N3045B-1 devices. The series utilizes the DO-213AB package to offer lower parasitics compared to traditional axial-leaded packages while maintaining hermetic sealing capabilities.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' DO-213AB packaged Zener diodes with identical 91 V nominal voltage and 5% tolerance. Verify that substitute components meet the same MIL-PRF-19500/115 qualification levels and hermetic seal requirements.