1N4728A-TAP

Overview

The Vishay 1N4728A-TAP is a silicon planar power Zener diode with a nominal voltage of 3.3 V and a maximum power dissipation of 1.3 W at thermal equilibrium. It features a standard tolerance of ±5% and operates within a temperature range of -65 °C to +175 °C. The device utilizes a DO-41 (DO-204AL) through-hole package, weighs approximately 310 mg, and has a peak soldering temperature rating of 260 °C.

Feature Summary

• Silicon planar construction for high-power stabilization and clipping applications
• Hermetically sealed glass package with metallurgically bonded die
• Standardized ±5% Zener voltage tolerance

Applications

• Voltage stabilization circuits
• High-power clipping circuits

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm packaging details. Confirm that the component meets RoHS3 compliance standards and check for any applicable AEC-Q101 automotive qualifications if required by the design specifications.

Selection Notes

Select this component when a 3.3 V reference with 1.3 W power handling is needed in a DO-41 package. Ensure the application maintains lead temperatures at ambient conditions to achieve rated power dissipation. Validate dynamic resistance and leakage current parameters against circuit requirements.

Part Context

This part belongs to the Vishay 1N4728A to 1N4761A series of silicon planar power Zener diodes. The series covers a wide voltage range from 3.3 V to 75 V, providing standardized options for various voltage regulation needs within the same physical form factor and manufacturing process.

Replacement Considerations

Cross-reference with other manufacturers offering 1N4728A equivalents in the DO-41 package. Verify that substitute parts match the 3.3 V nominal voltage, 1.3 W power rating, and ±5% tolerance specifications.