1N4733AUR

Overview

The Microchip Technology 1N4733AUR is a single silicon Zener diode designed for surface mount applications. It provides a nominal Zener voltage of 5.1 V with a tolerance of 5%. The device operates within a power dissipation rating of 1 W and features a maximum reverse leakage current of 5 uA at the specified test conditions. Its dynamic impedance is rated at 7 Ohms, ensuring stable regulation characteristics. The component is housed in a DO-213AB-2 package, suitable for automated SMD/SMT assembly processes.

Feature Summary

• Provides precise voltage regulation using a single unidirectional silicon junction structure
• Engineered for surface mount technology integration via compact axial leadless packaging
• Maintains low leakage current performance to support efficient circuit operation

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• General purpose voltage regulation tasks

Procurement Notes

Verify the specific manufacturer designation and RoHS compliance status directly with the supplier or official documentation before procurement. Confirm that the DO-213AB-2 package dimensions align with your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the part number suffixes to confirm exact electrical tolerances and testing parameters.

Selection Notes

Select this component when a standard 5.1 V reference is required in a surface mount form factor. Consider the 1 W power dissipation limit and thermal management needs during design. Evaluate the 5% voltage tolerance against your circuit's precision requirements. Compare the 7 Ohm dynamic impedance with other available options to ensure adequate regulation stability under varying load conditions.

Part Context

This component belongs to the industry-standard 1N47xx series of Zener diodes, widely recognized for voltage regulation applications. The 'A' suffix typically denotes tighter voltage tolerance compared to standard variants. The 'UR' suffix indicates the specific surface mount reel packaging configuration used by Microchip Technology for automated manufacturing integration.

Replacement Considerations

Consult official Microchip documentation for verified equivalent part numbers. Surface mount equivalents such as SMAJ or MLL series variants may be considered if pin compatibility and electrical ratings match. Verify that any substitute maintains the same DO-213AB-2 package outline and thermal characteristics.