1N4763AH

Overview

The 1N4763AH is a silicon planar Zener diode manufactured by Taiwan Semiconductor Corporation. It features a nominal Zener voltage of 82 V with a tolerance of 5% and a maximum power dissipation of 1 W at 25°C ambient temperature. The device utilizes a DO-41 axial leaded package with a glass passivated junction. Key electrical characteristics include a maximum dynamic impedance of 90 Ω, a test current of 15 mA, and a maximum reverse leakage current of 5 µA. The component supports a maximum operating junction temperature of 150°C and a storage temperature range from -65°C to +150°C.

Feature Summary

• Glass passivated junction for enhanced stability
• Built-in strain relief in the molded plastic case
• Low inductance design suitable for high-frequency applications

Applications

• Voltage regulation in DC power supplies
• Clamping and protection circuits
• Reference voltage sources in electronic systems

Procurement Notes

Verify the specific suffix 'H' against the manufacturer's official datasheet to confirm if it denotes a specific tape-and-reel packaging format or testing standard distinct from the standard bulk version. Ensure the ordering part number matches the exact voltage and package requirements for your circuit design before procurement.

Selection Notes

Select this component when a precise 82 V reference is required within a 1 W power budget. The DO-41 package offers through-hole mounting compatibility. Consider the 90 Ω dynamic impedance for noise sensitivity in the application. Verify thermal derating requirements if operation exceeds 25°C ambient conditions.

Part Context

This component belongs to the 1N47xx series of 1-watt Zener diodes produced by Taiwan Semiconductor. The series covers a wide voltage range from 3.3V to 100V. The 1N4763AH specifically targets the higher voltage end of this spectrum, providing reliable regulation in general-purpose discrete semiconductor applications.

Replacement Considerations

Compatible substitutes include the 1N4763A from other manufacturers such as onsemi or Taitron, provided they meet the same 82V, 1W, and DO-41 specifications. Verify pinout and package dimensions match the existing PCB layout.