1N4474US

Single Zener Diodes Overview

The Microchip Technology 1N4474US is a surface mount Zener voltage regulator diode with a nominal breakdown voltage of 24 V. It operates within a junction temperature range of -65 °C to +175 °C and features a steady-state power dissipation rating of 1.5 W at 25 °C ambient temperature. The device utilizes a hermetically sealed voidless glass package with an internal metallurgical bond, conforming to the MIL-PRF-19500/406 standard for high-reliability applications.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with tungsten slugs
• Internal Category 1 metallurgical bonds for robust mechanical integrity
• Triple-layer passivation for enhanced environmental protection
• Inherently radiation hard design suitable for demanding environments

Single Zener Diodes Applications

• High-reliability military and aerospace systems
• Voltage regulation in harsh operating conditions
• Critical circuit protection where failure is not tolerated

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these levels dictate qualification standards. Confirm RoHS compliance status if applicable, noting that compliant versions are available only on commercial grade parts. Ensure ordering suffixes match the desired tolerance and packaging configuration before procurement.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with high thermal stability is required. The 24 V nominal voltage and 16 Ohms dynamic impedance make it suitable for precise regulation tasks. Consider the wide operating temperature range and radiation hardness for specialized deployment scenarios.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of industry-recognized Zener voltage regulators. These devices serve as surface mount equivalents to popular JEDEC registered axial-lead series, offering similar electrical characteristics in a compact A (D-5A) MELF package format designed for automated assembly.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 24 V Zener voltage, 1.5 W power rating, and SQ-MELF package dimensions. Verify that substitute components meet the same MIL-PRF-19500/406 qualification levels if high reliability is required.