1N4466

Single Zener Diodes Overview

The Microchip Technology 1N4466 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a hermetically sealed void-less glass package with an internal metallurgical bond, ensuring robust construction. The device operates within a junction and storage temperature range of -65°C to +175°C. Key electrical characteristics include a nominal Zener voltage of 11.0 V at a test current of 23.0 mA, a maximum dynamic impedance of 6 Ohms, and a maximum reverse current of 0.30 µA. It supports a steady-state power dissipation of 1.5 W.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for extreme robustness.
• Qualified per MIL-PRF-19500/406 for JAN, JANTX, JANTXV, and JANS reliability levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge (ESD).
• Triple-layer passivation provides enhanced protection against environmental factors.

Single Zener Diodes Applications

• High-reliability aerospace systems where component failure is not tolerated.
• Military-grade electronic circuits requiring stable voltage regulation over broad operating ranges.
• Harsh environment instrumentation utilizing radiation-hardened components.

Single Zener Diodes Procurement Notes

Verify the specific reliability level suffix (JAN, JANTX, JANTXV, or JANS) required for your application, as qualification standards differ. Confirm RoHS compliance status, noting that compliant versions are available only in commercial grades. Ensure the ordering part number matches the exact tolerance and package configuration specified in the design documentation before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W power rating and axial lead mounting are required for critical voltage regulation tasks. Consider the 11.0 V nominal voltage and 6 Ohm dynamic impedance specifications for circuit stability. Evaluate the -65°C to +175°C operating temperature range against environmental conditions. Choose appropriate reliability suffixes based on mission-critical requirements and budget constraints.

Single Zener Diodes Part Context

This device belongs to the 1N4460–1N4496 series of industry-recognized Zener voltage regulators. The series offers extensive selections from 3.3 to 200 volts with standard 5% tolerance. These diodes utilize DO-41 axial-lead packages and are designed for applications demanding high durability and consistent performance under thermal stress.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include 1N4465 (10.0 V) and 1N4467 (12.0 V), provided voltage tolerances align with circuit requirements. Verify that replacement parts maintain the same MIL-PRF-19500/406 qualification level and hermetic sealing characteristics to ensure equivalent reliability in sensitive environments.

Single Zener Diodes FAQ

Is the 1N4466 resistant to electrostatic discharge?

Yes, the device is non-sensitive to ESD per MIL-STD-750 method 1020.

What is the maximum continuous Zener current for this diode?

The maximum continuous regulator current (IZM) is 130 mA.