1N4618UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4618UR-1 is a 500 mW Zener voltage regulator diode housed in a surface mount glass DO-213AA package. It features an internal metallurgical bond and operates within a junction temperature range of -65°C to +175°C. The nominal Zener voltage is 2.7 V at a test current of 250 µA, with a maximum dynamic impedance of 1500 Ohms and a reverse leakage current of 1.0 µA. Maximum noise density is specified at 90 µV/√Hz.

Single Zener Diodes Feature Summary

• Constructed with an internal metallurgical bond for enhanced reliability.
• Hermetically sealed glass DO-213AA surface mount package.
• Qualified up to the JANS level per MIL-PRF-19500/435.

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability applications requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required qualification level (JAN, JANTX, JANTXV, or JANS) as the base JEDEC number does not specify military screening. Confirm RoHS compliance status if applicable, noting that specific plating options may vary by grade. Ensure the tape and reel option is requested separately if bulk packaging is not desired.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability environments. The internal metallurgical bond provides superior stability compared to standard epoxy packages. Verify that the 2.7 V nominal voltage and 500 mW power dissipation align with the circuit's thermal and regulatory requirements.

Single Zener Diodes Part Context

This device belongs to the 1N4614UR-1 through 1N4627UR-1 series of 500 mZener regulators. These components are available in commercial versions with the CDLL prefix and can be ordered with JAN, JANTX, JANTXV, or JANS qualifications. They serve as surface mount equivalents to the axial-leaded 1N4614–1N4627 series.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' DO-213AA (SOD80) Zener diodes with matching 2.7 V ratings and 500 mW power dissipation. For military specifications, verify equivalent parts meet MIL-PRF-19500/435 standards.