1N4618DUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4618DUR-1/TR is a 500 mW metallurgically bonded glass surface mount Zener diode in the DO-213AA package. It provides a nominal Zener voltage of 2.7 V with a tight 1% tolerance at a test current of 250 µA. The device features a maximum dynamic impedance of 1500 Ohms and a maximum reverse leakage current of 1.0 µA. Qualified to MIL-PRF-19500/435 standards, it supports operation across a junction temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF style surface mount package
• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability aerospace and defense circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required qualification level (JAN, JANTX, JANTXV, or JANS) as specified in the datasheet nomenclature. Confirm the presence of the 'TR' suffix indicates tape and reel packaging per EIA-481-1-A standards. Ensure the 'D' suffix corresponds to the requested 1% voltage tolerance before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode with 1% voltage tolerance is required. The 2.7 V nominal rating suits low-voltage reference applications. Consider the 500 mW power dissipation limit and thermal resistance values for proper heat management on FR4 PCBs. Verify compatibility with MIL-PRF-19500/435 screening requirements for the target environment.

Single Zener Diodes Part Context

This part belongs to the 1N4614UR-1 through 1N4627UR-1 series of 500 mW Zener diodes. These devices serve as surface mount equivalents to the JEDEC registered axial-leaded 1N4614 through 1N4627 series. The series offers voltages from 1.8 to 100 V with various tolerance options, all utilizing the same DO-213AA package and metallurgical bond technology.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' DO-213AA Zener diodes with matching 2.7 V, 1% tolerance, and 500 mW ratings. For military specifications, verify equivalent MIL-PRF-19500/435 qualified parts. Axial-leaded 1N4618-1 variants may be used if board space permits and leaded mounting is acceptable.