1N4734AUR-1/TR

Overview

The Microchip Technology 1N4734AUR-1/TR is a high-reliability Zener diode featuring a 5.6V nominal breakdown voltage with a 5% tolerance. It operates in the DO-213AB (MELF-2) hermetically sealed glass package, rated for 1W power dissipation. The device utilizes silicon construction and supports a maximum operating temperature of 175°C. Designed for unidirectional applications, it offers low dynamic impedance and minimal reverse leakage current, ensuring stable voltage regulation in demanding environments.

Feature Summary

• Hermetically sealed glass MELF-2 package for environmental protection
• High reliability classification suitable for critical systems
• Stable voltage regulation with tight tolerance specifications
• Extended thermal performance up to 175°C junction temperature

Applications

• Military and aerospace electronic circuits
• High-reliability industrial control systems
• Precision voltage reference applications
• Harsh environment power supply regulation

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure correct screening levels and packaging options. Confirm RoHS compliance status as historical data indicates non-compliance for certain variants. Validate lead times and availability directly with the manufacturer or authorized distributors due to potential restricted supply conditions for high-reliability components.

Selection Notes

Select this component when hermetic sealing and high-temperature operation are required. Ensure the DO-213AB footprint matches the PCB design constraints. Consider the 1W power rating and thermal management requirements for the specific application environment. Verify that the 5.6V Zener voltage aligns with the circuit's regulation needs.

Part Context

This part belongs to the 1N4734 series of Zener diodes manufactured by Microchip Technology. It shares characteristics with other high-reliability variants like MSP1N4734AURTR but is distinguished by its specific MELF-2 packaging and screening level. The series is widely recognized for robust performance in regulated power applications.

Replacement Considerations

Direct substitutes include MSP1N4734AURTR and CDLL4734A/TR from Microchip. Cross-manufacturer equivalents such as Vishay 1N4734A-TR may require verification of package dimensions and electrical tolerances to ensure compatibility.