1N3026BUR-1

Overview

The Microchip Technology 1N3026BUR-1 is a 1-watt surface mount Zener diode qualified per MIL-PRF-19500/115. It features a hermetically sealed glass MELF (DO-213AB) package with metallurgically bonded internal construction. The nominal Zener voltage is 18 V at a test current of 14 mA, with a maximum dynamic impedance of 0.25 Ohms and a reverse leakage current of 10 µA. Operating temperatures range from -55 °C to +175 °C.

Feature Summary

• Hermetically sealed double plug glass construction for high reliability
• Metallurgically enhanced internal contact design
• Leadless surface mount MELF package equivalent to JEDEC DO-13
• Qualified for JAN, JANTX, and JANTXV military levels

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-density circuit designs requiring low parasitic characteristics
• High-reliability applications utilizing radiation-hardened components

Procurement Notes

Verify the specific qualification level required, as the part number suffix indicates the reliability tier. Confirm RoHS compliance status, noting that lead-free options are restricted to commercial grades. Ensure the ordering nomenclature matches the desired tolerance and packaging configuration before finalizing procurement.

Selection Notes

Select this component when a robust surface mount solution is needed for critical voltage reference applications. The metallurgical bond offers lower thermal resistance compared to standard packages. Consider the available voltage tolerances and the specific military qualification level required for the target environment.

Part Context

This device belongs to the 1N3016BUR-1 through 1N3045BUR-1 series of 1 Watt Surface Mount Zener Diodes. It serves as a surface mountable alternative to the traditional axial-leaded 1N3016B-1 through 1N3045B-1 JEDEC registered series, maintaining similar electrical performance in a compact form factor.

Replacement Considerations

Direct replacements include other parts within the 1N3016BUR-1 to 1N3045BUR-1 series or the axial 1N3016B-1 through 1N3045B-1 equivalents. Verify package compatibility and qualification levels when substituting.