1N4743A G

Overview

The Microsemi Corporation 1N4743A G is a registered Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 13 V with a standard tolerance of 5%. The device operates in a glass axial-lead DO-35 package, providing a power dissipation rating of 0.5 W. It supports a maximum operating temperature of 175 °C and includes an internal metallurgical bond option to meet high-reliability requirements specified by source control drawings.

Feature Summary

• Provides stable voltage regulation within the 1N746 through 1N759A series range
• Features an internal metallurgical bond for enhanced structural integrity
• Utilizes a hermetically sealed glass body suitable for harsh environments

Applications

• High-reliability aerospace systems requiring MIL-PRF-19500 screening
• Military electronic circuits governed by strict source control drawings
• Industrial equipment demanding robust voltage reference stability

Procurement Notes

Verify that the specific suffix 'G' aligns with the required RoHS compliance status and metallurgical bond specifications for your design. Confirm the package outline matches the DO-35 JEDEC standard. Ensure the procurement channel provides traceability documentation for military-grade screening levels if applicable to your project requirements.

Selection Notes

Select this component when a hermetically sealed glass package is mandatory for environmental protection. The internal metallurgical bond distinguishes it from standard commercial equivalents, making it suitable for vibration-prone or extreme temperature environments. Consider the 0.5 W power limit when designing thermal management strategies for dense circuit layouts.

Part Context

This part belongs to the 1N746 through 1N759A series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. These devices are JEDEC registered and serve as direct replacements for standard commercial Zener diodes while offering superior reliability through hermetic sealing and specialized bonding techniques for critical applications.

Replacement Considerations

Equivalent parts include the 1N758A and 1N4743A series variants. Verify that substitute components match the DO-35 package dimensions and possess comparable hermetic sealing capabilities if used in radiation or high-vibration environments.