1N4728AG

Overview

The Microchip Technology 1N4728AG is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.3 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range of -65°C to +175°C. Packaged in the DO-41 axial leaded format, it utilizes an oxide passivated die with metallurgically bonded construction. Key electrical characteristics include a maximum reverse leakage current of 10 µA at 12.2 V and a Zener impedance of 16 Ohms.

Feature Summary

• Provides stable voltage regulation using a silicon planar structure with oxide passivation.
• Features hermetically sealed glass encapsulation for environmental protection.
• Offers high thermal stability suitable for demanding operating conditions.

Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping applications

Procurement Notes

Verify the specific suffix 'AG' against the manufacturer's official datasheet to confirm package type and compliance status. Ensure the procurement channel provides valid traceability documentation. Confirm RoHS3 compliance requirements match the component specifications before ordering.

Selection Notes

Select this component when a precise 3.3 V reference is required in a through-hole configuration. Consider the 1 W power rating and DO-41 package dimensions for board layout constraints. Evaluate the ±5% tolerance against circuit sensitivity requirements.

Part Context

This component belongs to the standard 1N47xx series of 1 Watt Zener diodes manufactured by Microchip Technology. The series covers a wide voltage range from 3.3 V to 100 V. The 1N4728AG variant specifically targets low-voltage regulation needs within industrial and commercial electronics sectors.

Replacement Considerations

Compatible substitutes include the 1N4728A from other manufacturers such as Vishay or Nexperia, provided they meet the same 3.3 V, 1 W, and DO-41 package specifications.