1N4471US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4471US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 18 V and a maximum power dissipation of 1.5 W. It features a standard voltage tolerance of ±5% and operates within a junction temperature range of -65 °C to +175 °C. The device utilizes a voidless hermetically sealed glass package with an internal metallurgical bond, providing robust construction suitable for high-reliability applications.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonding
• Military qualification available per MIL-PRF-19500/406 standards
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability voltage regulation where failure cannot be tolerated
• Broad operating current and temperature range stabilization
• Radiation-hardened circuit protection

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number may correspond to commercial grade while JAN, JANTX, JANTXV, or JANS suffixes denote military qualifications. Confirm RoHS compliance status, noting that compliant versions are typically restricted to commercial grades only. Ensure the ordering suffix matches the desired tolerance and packaging configuration before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 1.5 W surface mount Zener diode with high thermal stability and radiation hardness. The 18 V nominal rating suits circuits needing precise reference voltages within the specified series. Consider the wide operating temperature range and robust glass package when designing for harsh environments or critical systems.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of surface mount Zener diodes. These components serve as industry-recognized replacements for popular JEDEC registered axial-lead series, offering equivalent performance in a compact MELF-style package. The series provides extensive voltage selections from 3.3 V to 200 V with various tolerance options.

Single Zener Diodes Replacement Considerations

Direct replacement requires verifying the exact voltage tolerance and reliability level (JAN/JANTX/JANTXV/JANS) against the original specification. Commercial equivalents lack military qualification and radiation hardness. Ensure the replacement maintains the 1.5 W power rating and compatible package dimensions.