1N4464US

Single Zener Diodes Overview

The Microchip Technology 1N4464US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 9.1 V and a maximum steady-state power dissipation of 1.5 W. It operates within a junction temperature range of -65 °C to +175 °C. The device features a test current (IZT) of 28 mA, a maximum dynamic impedance (ZZT) of 4 Ohms at IZT, and a maximum reverse leakage current of 0.3 µA at 5 V. It utilizes an A (D-5A) MELF package.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds for robust reliability.
• Qualified per MIL-PRF-19500/406 for high-reliability applications where failure cannot be tolerated.
• Inherently radiation hard and non-sensitive to electrostatic discharge.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability military and aerospace circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific qualification level required for your application, as this component family includes JAN, JANTX, JANTXV, and JANS variants. Confirm RoHS compliance status if applicable, noting that compliant versions are available only on commercial grade parts. Ensure the ordering suffix matches the desired tolerance and environmental rating specifications.

Single Zener Diodes Selection Notes

Select the 1N4464US when a 9.1 V reference is needed in a surface mount form factor. Consider the 1.5 W power rating and thermal resistance characteristics for heat management. Verify that the 4 Ohm dynamic impedance meets the circuit requirements for stability under varying load conditions.

Single Zener Diodes Part Context

This component belongs to the 1N4460US through 1N4496US series of voidless hermetically sealed surface mount Zener diodes. These devices serve as surface mount equivalents to popular JEDEC registered axial lead series, offering similar electrical performance in a compact D-5A MELF package suitable for automated assembly.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N4464 equivalent Zener diodes in SMD packages. For military specifications, verify compatibility with MIL-PRF-19500/406 qualified parts from authorized sources.