1N3028BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N3028BUR-1 is a surface mount Zener diode with a nominal voltage of 22 V and a 5% tolerance. It operates within a temperature range of -55 °C to +175 °C and dissipates up to 1 W. The device features a maximum reverse leakage current of 10 µA at 16.7 V, a dynamic impedance of 23 Ω at 11.5 mA, and a forward voltage of 1.2 V at 200 mA. It utilizes a DO-213AB (MELF) package.

Single Zener Diodes 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

Single Zener Diodes Applications

• Voltage regulation over broad operating currents and temperatures
• High-reliability military and aerospace circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific suffix against official datasheets to confirm qualification levels such as JAN, JANTX, or JANTXV. Confirm RoHS compliance status, as commercial versions may differ from military specifications. Ensure the ordering information matches the required voltage tolerance and package outline before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a leadless surface mount equivalent to the JEDEC registered 1N3028B-1 is required. Consider the DO-213AB package dimensions and axial coefficient of expansion for mounting surface compatibility. Evaluate the 1 W power dissipation limit and derating requirements for the intended operating environment.

Single Zener Diodes Part Context

This part belongs to the 1N3016BUR-1 through 1N3045BUR-1 series of 1 Watt Surface Mount Zener Diodes. These devices are qualified per MIL-PRF-19500/115 and serve as leadless surface mount equivalents to the JEDEC registered 1N3016 through 1N3045 number series in the DO-13 package.

Single Zener Diodes Replacement Considerations

The 1N3028B-1 is a through-hole equivalent in the DO-41 package. Verify that the replacement meets the same electrical parameters and environmental qualifications if used in existing designs.