1N4478D

Single Zener Diodes Overview

The Microchip Technology 1N4478D is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 36 V with a tolerance of ±5%. The device has a maximum power dissipation of 1.5 W and operates within an extended temperature range from -65°C to +175°C. Key electrical parameters include a maximum reverse leakage current of 50 nA at 28.8 V, a dynamic impedance of 27 Ohms, and a test current of 7.5 mA. It utilizes a DO-41 axial leaded package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features high reliability construction suitable for demanding environments
• Offers flexible axial-leaded mounting terminals for through-hole integration

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Overvoltage protection systems
• Reference voltage sources

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' against official Microchip documentation to confirm exact screening levels and packaging details. Ensure compatibility with MIL-PRF-19500 requirements if military-grade performance is necessary. Cross-reference datasheet specifications for thermal resistance and derating curves prior to final design implementation.

Single Zener Diodes Selection Notes

Select this component when a 36 V regulation point is required with 1.5 W power handling capability. Consider the axial DO-41 package for through-hole assembly needs. Evaluate the extended temperature range suitability for harsh environment applications compared to standard commercial grade alternatives.

Single Zener Diodes Part Context

This part belongs to the 1N4478 series of Zener diodes manufactured by Microchip Technology. The series offers various voltage options within the same package family. The 1N4478D specifically denotes the 36 V variant with defined tolerance and power ratings.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.