1N4749A-TR

Overview

The Vishay 1N4749A-TR is a silicon planar power Zener diode in the DO-204AL (DO-41) axial leaded package. It provides a nominal Zener voltage of 24 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1300 mW and operates within a junction temperature range up to 175 °C. Electrical characteristics include a test current of 10.5 mA, a maximum dynamic resistance of 25 Ω at IZT1, and a reverse leakage current of 5 µA at 18.2 V.

Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Designed for high-power stabilization and clipping applications
• Features a glass-passivated junction for enhanced reliability

Applications

• Voltage stabilization circuits
• Signal clipping applications

Procurement Notes

Verify that the ordering suffix '-TR' corresponds to the taped-and-reeled packaging format containing 5000 units per reel. Confirm compliance with RoHS3 directives and ensure the component meets AEC-Q101 automotive qualification standards if required by the specific design environment.

Selection Notes

Select this component when a 24 V reference point is required with a ±5% tolerance. Ensure the circuit design accommodates the 1300 mW thermal dissipation limit and verify that the 25 Ω dynamic impedance aligns with the noise and stability requirements of the target application.

Part Context

This part belongs to the Vishay 1N4728A through 1N4761A series of single Zener diodes. These components are manufactured using silicon planar processes and are housed in the standardized DO-41 axial package, providing a consistent form factor for through-hole mounting across various voltage ratings.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4749A designation. Verify that substitute parts match the 24 V nominal voltage, ±5% tolerance, and 1.3 W power rating to maintain electrical compatibility.