1N4733AUR/TR

Overview

The Microchip Technology 1N4733AUR/TR is a single silicon Zener diode designed for surface mount applications. It provides a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%. The device operates within a power dissipation rating of 1 W and features a low maximum reverse leakage current of 5 µA. Its dynamic impedance is specified at 7 Ohms, tested at a current of 49 mA. The component utilizes the DO-213AB (SMA) package and supports an operating temperature range from -65 °C to +175 °C.

Feature Summary

• Surface mount construction in a compact DO-213AB glass package suitable for high-density circuit layouts.
• Hermetic sealing properties inherent to the glass MELF-style enclosure for environmental stability.
• Low parasitic characteristics resulting from the specific surface mount outline design.

Applications

• Voltage regulation in high-density electronic assemblies
• Clamping circuits requiring low parasitic parameters
• High reliability applications governed by source control drawings

Procurement Notes

Verify that the specific ordering suffix matches the required tape and reel configuration for automated assembly processes. Confirm compliance requirements against the manufacturer's datasheet, as RoHS status may vary by production batch. Ensure the supplier provides valid traceability documentation for the Microchip Technology part number to guarantee authenticity and correct lot coding.

Selection Notes

Select this component when a 5.1 V reference is needed in a surface mount form factor. The DO-213AB package offers a smaller footprint compared to traditional axial leads while maintaining equivalent electrical performance. Consider the extended temperature range and hermetic glass construction if the application environment demands robustness beyond standard plastic encapsulated alternatives.

Part Context

This part belongs to the 1N47xx series of 1 Watt Zener diodes manufactured by Microchip Technology. These devices are electrically equivalent to their registered counterparts but utilize the JEDEC-defined DO-213AB surface mount outline. The series is engineered to provide reliable voltage regulation in space-constrained designs without compromising on power handling capabilities.

Replacement Considerations

Direct substitutes include other manufacturers' equivalents in the DO-213AB package with matching 5.1 V Zener voltage and 1 W power rating. Verify pinout compatibility and thermal characteristics before implementation.