1N4730/TR

Overview

The Microchip Technology 1N4730/TR is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V with a 5% tolerance and operates within a power dissipation rating of 1 W. The device utilizes a DO-204AL (DO-41) axial through-hole package, supporting a maximum reverse leakage current of 5 µA at specified conditions. It maintains a stable operation across an extended temperature range from -65 °C to +175 °C, ensuring reliability in demanding environments.

Feature Summary

• Provides precise voltage regulation using a 3.9 V Zener reference with standard 5% tolerance.
• Engineered for high thermal stability with a 1 W steady-state power dissipation capability.
• Constructed with a plastic encapsulated DO-41 axial leaded package for robust mechanical mounting.

Applications

• General-purpose voltage regulation circuits
• Reference voltage sources in analog systems
• Overvoltage protection stages

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to confirm exact electrical tolerances and screening levels. Ensure the procurement channel provides valid traceability for the component's manufacturing origin. Cross-reference the datasheet revision date to guarantee compatibility with current design specifications and regulatory requirements.

Selection Notes

Select this component when a 3.9 V regulation point is required with moderate power handling capabilities. The DO-41 package offers suitable thermal performance for general board-level applications. Consider the operating temperature range and leakage characteristics to ensure alignment with the target circuit's environmental constraints and precision requirements.

Part Context

This part belongs to the widely recognized 1N47xx series of Zener diodes, which are standardized JEDEC components. The 'TR' suffix indicates reel packaging for automated assembly processes. As a product of Microchip Technology, it adheres to established industry standards for silicon junction devices, providing a reliable solution for discrete voltage control tasks.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4730 variants meeting identical 3.9 V and 1 W specifications. Verify pinout compatibility and package dimensions before substitution. Military-grade equivalents may require specific prefix additions such as MSP or JAN identifiers for enhanced screening compliance.