1N4471D

Single Zener Diodes Overview

The Microchip Technology 1N4471D is a Zener voltage regulator diode designed for through-hole mounting in the DO-41 package. It provides an 18 V nominal Zener voltage with a 5% tolerance and operates within a temperature range of -65°C to +175°C. The device dissipates up to 1.5 W of power, features a maximum reverse leakage current of 50 nA, and has a Zener impedance of 25 Ohms at a test current of 7.5 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using voidless glass technology
• Internal metallurgical bond for high reliability
• Qualified to MIL-PRF-19500/406 military standards

Single Zener Diodes Applications

• High-reliability aerospace systems
• Defense electronics requiring radiation tolerance
• Critical industrial control circuits

Single Zener Diodes Procurement Notes

Verify that the specific suffix 'D' corresponds to the required military qualification level (such as JANTXV or JANS) per the manufacturer's datasheet. Confirm the package type matches the DO-41 axial lead specification. Ensure the order includes the correct RoHS status documentation if applicable to the project requirements.

Single Zener Diodes Selection Notes

Select this component when a stable 18 V reference is needed under extreme thermal conditions. The 1.5 W power rating supports higher current applications compared to standard 500 mW regulators. Verify that the 25 Ohm impedance meets the noise sensitivity requirements of the target circuit design.

Single Zener Diodes Part Context

This part belongs to the 1N4460US–1N4496US series of surface mount and through-hole Zener diodes. These devices are engineered for environments where failure is not tolerated. They utilize industry-standard form factors while delivering enhanced durability through specialized glass sealing processes.

Single Zener Diodes Replacement Considerations

Cross-reference with other 1N44xx series variants from Microchip Technology. Ensure any substitute maintains the same 18 V Zener voltage and 1.5 W power dissipation capabilities.