1N4762AUR

Overview

The Microchip Technology 1N4762AUR is a single silicon Zener diode designed for voltage regulation applications. It features an 82 V nominal Zener voltage with a ±5% tolerance and operates at a maximum power dissipation of 1 W. The device utilizes the DO-213AB (MELF) surface-mount package, offering a compact form factor suitable for automated assembly. It supports a wide operating temperature range from -65°C to +175°C, ensuring reliability in demanding environments.

Feature Summary

• Provides stable voltage regulation with high precision tolerance
• Capable of handling significant power dissipation in a compact surface-mount footprint
• Engineered for extended thermal stability across extreme industrial temperature ranges

Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• Clamping applications in harsh environment electronics

Procurement Notes

Verify the specific suffix UR against official Microchip documentation to confirm the exact tape-and-reel packaging configuration and manufacturing lot details. Ensure compliance with RoHS directives if required by your system specifications, as historical data indicates potential variations in lead content depending on the production era. Cross-reference the DO-213AB footprint dimensions with your PCB design library to guarantee mechanical fitment.

Selection Notes

Select this component when a robust, high-power surface-mount Zener diode is required for critical voltage regulation tasks. The 1W rating distinguishes it from lower-power variants, making it suitable for applications requiring higher energy absorption. The wide temperature range justifies its use in aerospace or automotive sectors where standard commercial-grade components may fail under thermal stress.

Part Context

This part belongs to the 1N47xx series of Zener diodes, a long-standing industry standard for voltage regulation. The 'A' designation typically denotes a specific tolerance band, while the 'UR' suffix identifies the surface-mount MELF variant manufactured by Microchip Technology. This series is widely recognized for its reliability in military and industrial grade applications.

Replacement Considerations

Direct substitutes include MSP1N4762AUR/TR from Microsemi/Microchip, which shares identical electrical characteristics and package type. Other generic equivalents must match the 82V Zener voltage, 1W power rating, and DO-213AB footprint to ensure functional compatibility without redesigning the circuit board.