1N4471US

Single Zener Diodes Overview

The Microchip Technology 1N4471US is a surface mount Zener voltage regulator featuring a voidless hermetically sealed glass package. It provides an 18 V nominal Zener voltage with a standard 5% tolerance and operates within a junction temperature range of -65°C to +175°C. The device dissipates up to 1.5 W at 25°C ambient, exhibits a maximum dynamic impedance of 650 Ohms at the test current of 14 mA, and maintains a maximum reverse leakage current of 50 µA at 14.4 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for robust reliability
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard and non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability aerospace and defense circuits
• Voltage regulation in harsh environmental conditions
• Critical systems requiring failure-intolerant performance

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these designations dictate the manufacturing and testing standards. Confirm RoHS compliance status if applicable, noting that compliant versions are commercial grade only. Ensure the ordering suffix matches the desired tolerance and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a surface mount equivalent to axial lead Zener diodes is needed for high-reliability designs. Consider the 1.5 W power dissipation capability and the wide operating temperature range. Evaluate the 650 Ohm dynamic impedance against circuit requirements for voltage stability under varying load currents.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These devices serve as surface mount replacements for traditional axial-lead JEDEC registered series, offering identical electrical characteristics in a compact D-5A MELF package suitable for automated assembly processes.

Single Zener Diodes Replacement Considerations

The 1N4471US serves as the surface mount counterpart to the 1N4471 axial lead diode.