1N4730A-T

Overview

The Vishay 1N4730A-T is a silicon planar power Zener diode designed for voltage stabilization and clipping applications. It features a nominal Zener voltage of 3.9 V with a standard tolerance of ±5 %. The device operates within a test current range of 3.3 to 76 mA and provides a maximum reverse leakage current of 50 μA at 1 V. Key electrical parameters include a dynamic resistance of 9 Ω at the test current and a surge current rating of 1190 mA. The component is housed in a DO-41 (DO-204AL) axial leaded package, supporting a peak power dissipation of 1300 mW and a junction temperature up to 175 °C.

Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Engineered for high-power stabilization and signal clipping circuits
• Provides standard ±5 % Zener voltage tolerance

Applications

• Voltage stabilization
• Clipping circuits

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm packaging format and reel specifications. Confirm compliance requirements such as RoHS status and material categorization details via the official Vishay compliance portal before procurement. Ensure that thermal management strategies account for the specified thermal resistance and ambient temperature derating curves provided in the datasheet.

Selection Notes

Select this component when a 3.9 V reference or regulation point is required in through-hole designs. Consider the 1300 mW power dissipation capability and the 175 °C junction temperature limit for thermal design. Verify that the operating current falls within the specified test current range to ensure accurate voltage regulation performance.

Part Context

This part belongs to the 1N4728A to 1N4761A series of Zener diodes manufactured by Vishay Semiconductors. The series covers a broad Zener voltage range from 3.3 V to 75 V, offering extensive selection options for various voltage regulation needs while maintaining consistent package and performance characteristics across the family.

Replacement Considerations

Cross-reference with other manufacturers' 1N4730A equivalents ensuring identical DO-41 packaging, 3.9 V nominal voltage, and compatible power dissipation ratings. Verify that substitute components meet the same ±5 % tolerance and thermal specifications.