1N3023BUR-1

Overview

The Microchip Technology 1N3023BUR-1 is a 1-watt surface mount Zener diode in the DO-213AB (MELF) package. It features a nominal Zener voltage of 12 volts with a 5% tolerance, tested at 21 mA. The device exhibits a maximum dynamic impedance of 9 ohms and a reverse leakage current of 10 µA at 12 V. It operates within a junction temperature range of -55°C to +175°C and supports soldering temperatures up to 260°C for 10 seconds.

Feature Summary

• Hermetically sealed glass MELF construction with metallurgically bonded internal contacts for high reliability.
• Leadless surface mount design suitable for high-density packaging and low parasitic requirements.
• Inherently radiation hard and non-sensitive to electrostatic discharge.
• Available in JAN, JANTX, and JANTXV military qualification levels per MIL-PRF-19500/115.

Applications

• Voltage regulation over broad operating current and temperature ranges.
• High-reliability applications requiring hermetic sealing and radiation hardness.
• High-density circuit designs utilizing surface mount technology.

Procurement Notes

Verify the specific suffix codes against the datasheet nomenclature to confirm the exact reliability level (JAN, JANTX, or JANTXV) and RoHS compliance status. Ensure the ordering part number matches the required voltage tolerance and package outline. Confirm that the supplier provides documentation verifying the MIL-PRF-19500/115 qualification if military-grade performance is required for the application.

Selection Notes

Select this component when a 12-volt reference is needed in a compact surface mount form factor. The DO-213AB package offers lower thermal resistance compared to axial leads. Consider the 5% voltage tolerance and 9-ohm dynamic impedance for precision requirements. Evaluate the -55°C to +175°C operating range against environmental conditions. Verify compatibility with the mounting surface coefficient of expansion to prevent mechanical stress during thermal cycling.

Part Context

This device belongs to the 1N3016BUR-1 through 1N3045BUR-1 series of 1-watt surface mount Zener diodes. These components serve as leadless equivalents to the JEDEC registered 1N3016B-1 through 1N3045B-1 series in the DO-13 package. The series covers a Zener voltage range from 6.8 volts to 110 volts, providing options for various voltage regulation needs in a standardized MELF footprint.

Replacement Considerations

Direct replacements include other 1N3023 variants in the same series with different tolerance suffixes (e.g., 1N3023CDR-1 for 1% tolerance). Equivalent axial-leaded parts are available in the 1N3023B-1 series. Verify that any substitute maintains the 1-watt power dissipation rating and the DO-213AB package dimensions for proper board fit.

FAQ

What is the maximum forward voltage of the 1N3023BUR-1?

The maximum forward voltage is 1.2 V at a forward current of 200 mA.

How is polarity identified on the 1N3023BUR-1?

Polarity is indicated by a cathode band marking on the device body. The banded end should be positive with respect to the opposite end for Zener regulation operation.

What is the thermal resistance of the device?

The thermal resistance from junction to end cap is 50 °C/W.