1N4741AUR

Overview

The Microchip Technology 1N4741AUR is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 11 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65 °C to +175 °C. Packaged in the DO-213AB MELF format, it utilizes surface-mount technology for automated assembly. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 8.3 V and a forward voltage drop of 1.2 V at 200 mA.

Feature Summary

• Provides stable voltage regulation through controlled Zener breakdown characteristics
• Engineered for high reliability with low leakage current specifications
• Capable of operation across extreme industrial and military temperature ranges

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications in signal conditioning paths

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official Microchip Technology documentation. Confirm package integrity and marking codes match the DO-213AB specification. Ensure compliance with project-specific environmental standards, noting that this specific variant may not adhere to RoHS directives depending on the manufacturing batch date. Validate thermal performance requirements against the 1 W dissipation limit before finalizing procurement orders.

Selection Notes

Select this component when a compact surface-mount solution is required for 11 V regulation tasks. The DO-213AB package offers space efficiency compared to axial leads while maintaining robust thermal handling capabilities. Consider the extended temperature rating for environments exceeding standard commercial limits. Evaluate the ±5% voltage tolerance against circuit sensitivity requirements to ensure adequate margin for system stability under varying load conditions.

Part Context

This device belongs to the 1N4741 series of Zener diodes manufactured by Microchip Technology. The series provides a wide range of voltage options within the same physical footprint family. The 'AUR' suffix typically denotes specific packaging or tape-and-reel configurations suitable for high-volume automated placement processes. This classification ensures compatibility with standard surface-mount assembly lines used in modern electronics manufacturing.

Replacement Considerations

Direct substitutes include the 1N4741AUR/TR from Microchip Technology, which shares identical electrical parameters and package dimensions. Verify pinout orientation and thermal resistance values when considering alternative manufacturers to ensure seamless integration without redesigning the printed circuit board layout.