1N3032BUR-1/TR

Overview

The Microchip Technology 1N3032BUR-1/TR is a surface mount Zener diode in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 33 V with a 5% tolerance at a test current of 7.5 mA. The device features a maximum dynamic impedance of 45 Ohms and a maximum reverse leakage current of 10 µA. It supports a DC power dissipation of 1 W, operating within a junction temperature range of -55 °C to +175 °C.

Feature Summary

• Hermetically sealed glass MELF construction for high reliability
• Leadless surface mount design suitable for high-density applications
• Metallurgically bonded internal contacts for enhanced thermal performance

Applications

• Voltage regulation over broad operating currents and temperatures
• High-reliability military and aerospace circuits
• Low parasitic requirement surface mount designs

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance status and military qualification levels. Ensure the ordering code matches the required tolerance and packaging format. Cross-reference the manufacturer's part nomenclature guide to validate the exact electrical characteristics associated with the specific variant requested.

Selection Notes

Select this component for applications requiring hermetic sealing and leadless surface mounting. The DO-213AB package offers low parasitic characteristics ideal for high-density layouts. Consider the 175 °C maximum junction temperature rating for environments demanding extended thermal operation capabilities beyond standard commercial limits.

Part Context

This device belongs to the 1N3016B-1 through 1N3045B-1 series, serving as the surface mount equivalent to JEDEC registered DO-13 axial leaded diodes. The series covers a Zener voltage range from 6.8 V to 110 V. The 1N3032BUR-1 specifically addresses the 33 V segment of this lineup, maintaining the same physical outline while adapting to SMT processes.

Replacement Considerations

Direct replacements include other manufacturers' DO-213AB Zener diodes with matching 33 V specifications. Verify that substitute components meet the same hermetic seal requirements and thermal resistance ratings if used in radiation-hardened or high-reliability contexts.