1N4735AUR

Overview

The Microchip Technology 1N4735AUR is a silicon planar power Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.2 V with a tolerance of 5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range of -65°C to +175°C. It utilizes the DO-213AB-2 (SMA) surface mount package, measuring 5.2 mm in length and 2.66 mm in diameter. Key electrical characteristics include a maximum reverse leakage current of 5 uA and a Zener impedance of 2 Ohms.

Feature Summary

• Provides stable voltage regulation using silicon planar technology
• Capable of operating at high temperatures up to 175°C
• Designed for surface mount installation via the DO-213AB-2 package

Applications

• Voltage reference circuits requiring high thermal stability
• Power supply regulation systems
• Overvoltage protection in electronic assemblies

Procurement Notes

Verify the specific suffix UR against official Microchip documentation to confirm the surface mount configuration and RoHS status. Ensure that the DO-213AB-2 footprint matches the design layout. Confirm availability through authorized channels as manufacturing cycles may vary. Cross-reference datasheet revisions to ensure compatibility with current environmental compliance standards.

Selection Notes

Select this component when a 6.2 V regulation point is required in a compact surface mount form factor. The 1 W power rating supports moderate current loads compared to lower-power variants. The wide operating temperature range makes it suitable for industrial environments where standard commercial grade parts would fail. Verify that the 5% tolerance meets the circuit precision requirements.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. While the traditional 1N4735A uses a through-hole DO-41 package, the 1N4735AUR variant adapts the same electrical specifications for surface mount technology. This allows designers to maintain consistent voltage regulation performance while transitioning to automated assembly processes.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4735A devices in SMA packages, such as those from Nexperia or onsemi. Ensure any replacement maintains the 6.2 V nominal voltage, 1 W power rating, and compatible DO-213AB-2 footprint.