1N4730A-TR

Overview

The Vishay 1N4730A-TR is a silicon planar power Zener diode in the DO-41 axial through-hole package. It provides a nominal Zener voltage of 3.9 V with a standard tolerance of ±5%. The device operates at a test current of 64 mA and dissipates up to 1.3 W. Key electrical parameters include a maximum reverse leakage current of 50 µA, a dynamic resistance (ZZT) of 9 Ω, and a forward voltage of 1.2 V at 200 mA. It supports a junction temperature up to 175 °C.

Feature Summary

• Designed for high-power voltage stabilization and clipping applications
• Utilizes silicon planar technology for robust performance
• Features a standard Zener voltage tolerance of ±5%

Applications

• Voltage stabilization circuits
• Signal clipping circuits

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm packaging details. Ensure that the component meets the required environmental compliance standards for the intended deployment environment before finalizing procurement.

Selection Notes

Select this component when a stable 3.9 V reference is required in through-hole designs. Consider the 1.3 W power dissipation capability and the 9 Ω dynamic resistance for circuit stability requirements. Verify thermal management strategies to maintain safe operating temperatures.

Part Context

This part belongs to the 1N4728A through 1N4761A series of single Zener diodes manufactured by Vishay Semiconductors. The series covers a wide range of nominal voltages from 3.3 V to 75 V within the same DO-41 package family.

Replacement Considerations

Compatible substitutes within the same series include 1N4729A and 1N4731A. Verify exact voltage ratings and tolerance specifications when substituting to ensure circuit compatibility.