1N3028BUR-1/TR

Overview

The Microchip Technology 1N3028BUR-1/TR is a surface mount Zener diode with a nominal voltage of 22 V and a 5% tolerance. It operates within a junction temperature range of -55 °C to +175 °C and dissipates up to 1 W. Key electrical parameters include a test current of 11.5 mA, maximum reverse leakage of 10 µA at 16.7 V, and dynamic impedance of 23 Ω. The device utilizes a DO-213AB (MELF) glass package.

Feature Summary

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

Applications

• Voltage regulation over broad operating currents
• High-density circuit board mounting
• Low parasitic requirement applications

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm military qualification levels and RoHS compliance status. Ensure the ordering code matches the required tolerance and packaging format. Cross-reference part nomenclature details to validate the exact variant before procurement.

Selection Notes

Select this component for applications requiring hermetic sealing and radiation hardness in a surface mount form factor. Consider the thermal resistance and power derating curves when designing for high ambient temperatures. Verify that the 22 V breakdown voltage aligns with the target circuit requirements.

Part Context

This component belongs to the 1N3016B-1 through 1N3045B-1 series, offering surface mount equivalents to JEDEC registered axial-leaded devices. The series provides a wide selection of voltages from 6.8 V to 110 V in the DO-213AB outline, suitable for replacing traditional through-hole designs in modern electronics.

Replacement Considerations

Direct replacements include JAN1N3028D-1/TR and MX1N3028BUR-1.