1N4469US

Single Zener Diodes Overview

The Microchip Technology 1N4469US is a surface mount Zener voltage regulator diode qualified to MIL-PRF-19500/406. It features a voidless hermetically sealed glass package with an internal metallurgical bond. The nominal Zener voltage is 15 V, tested at 17 mA. Maximum dynamic impedance is 600 Ohms at the test current, and maximum reverse leakage current is 0.05 µA at 12.8 V. Steady-state power dissipation is 1.5 W at 25°C ambient temperature. Operating junction and storage temperatures range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction using internal metallurgical bonding for robustness.
• Military qualification per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard as described in Microsemi MicroNote 050.
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020.

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened electronic systems.

Single Zener Diodes Procurement Notes

Verify the specific reliability level suffix (JAN, JANTX, JANTXV, or JANS) required for the application, as these denote different qualification standards under MIL-PRF-19500/406. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military grades. Ensure the ordering suffix matches the desired tolerance and packaging configuration before procurement.

Single Zener Diodes Selection Notes

Select this component for surface mount designs requiring high-reliability voltage regulation. The 1N4469US provides a 15 V reference point with a standard 5% tolerance. Consider the 1.5 W power rating and thermal resistance characteristics for heat dissipation requirements. Verify compatibility with the A (D-5A) MELF package dimensions during PCB layout.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of 1.5 Watt Glass Zener Diodes. These components are industry-recognized equivalents to popular JEDEC registered series but offer superior hermetic sealing. The series covers Zener voltages from 3.3 to 200 volts, providing extensive selection options for various voltage regulation needs in rugged environments.

Single Zener Diodes Replacement Considerations

Direct replacements must match the MIL-PRF-19500/406 qualification and 1.5 W power rating. Equivalent parts include other manufacturers' 1N4469 variants in the A (D-5A) MELF package. Ensure substitute devices maintain the same hermetic seal and metallurgical bond specifications to preserve radiation hardness and ESD immunity.