1N4743A-TR

Overview

The Vishay 1N4743A-TR is a silicon planar power Zener diode in the 1N4728A to 1N4761A series, housed in an axial DO-41 (DO-204AL) package. It provides a nominal Zener voltage of 13 V with a standard tolerance of ±5 %. The device operates at a test current of 19 mA and features a maximum reverse leakage current of 5 µA. It dissipates up to 1300 mW of power and withstands a surge current of 344 mA. The component supports junction temperatures up to 175 °C and is supplied on a 14-inch reel containing 5000 units per roll.

Feature Summary

• Designed for high-power stabilizing and clipping circuits utilizing silicon planar technology
• Provides precise voltage regulation with a standard Zener voltage tolerance of ±5 %
• Engineered for robust thermal performance with a maximum junction temperature of 175 °C

Applications

• Voltage stabilization
• Clipping circuits

Procurement Notes

Verify that the ordering code matches the specific suffix required for tape-and-reel packaging. Confirm the manufacturer part number aligns with the Vishay 1N47xx series specifications. Ensure the requested quantity meets the minimum order requirements associated with bulk box quantities. Validate compliance documentation against the material categorization definitions provided by the manufacturer.

Selection Notes

Select this component when a 13 V reference point is required within a through-hole design. The DO-41 package accommodates standard axial mounting techniques. Evaluate the 1300 mW power dissipation capability against the expected thermal load. Verify that the 19 mA test current aligns with the biasing conditions of the target circuit application.

Part Context

This device belongs to the Vishay 1N4728A to 1N4761A family of Zener diodes. The series covers a wide range of nominal voltages from 3.3 V to 75 V. All members share identical physical dimensions and electrical testing methodologies defined in document number 85816. The -TR suffix indicates the specific reel-based packaging format used for automated assembly processes.

Replacement Considerations

Cross-reference other manufacturers offering the 1N4743A designation. Verify that substitute components maintain the same DO-41 footprint and 13 V nominal voltage rating. Confirm equivalent power dissipation and tolerance specifications before implementation.