JAN1N4461

Single Zener Diodes Overview

The JAN1N4461 is a military-qualified Zener voltage regulator with a nominal breakdown voltage of 6.8 V and a test current of 37 mA. It features a maximum dynamic impedance of 2.5 Ohms at the test point and a maximum reverse leakage current of 10 µA. The device supports a steady-state power dissipation of 1.5 W and operates within a junction temperature range of -65 °C to +175 °C. Standard tolerance is ±5%, with tighter options available via suffixes.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds for extreme robustness.
• Qualified per MIL-PRF-19500/406 for high-reliability applications where failure cannot be tolerated.
• 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

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense circuits
• Harsh environment electronics requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required qualification level, specifically JANS for space-grade reliability or JAN/JANTX for standard military use. Confirm RoHS compliance status, as leaded versions are non-compliant while commercial matte-tin variants are compliant. Ensure the package type aligns with the design, typically DO-41 axial lead for this specific part number.

Single Zener Diodes Selection Notes

Select based on the required Zener voltage stability and thermal management capabilities. The 1.5 W rating allows for significant power handling, but derating curves must be consulted for temperatures above ambient. Consider tighter tolerance suffixes if circuit precision requires better than the standard 5% variance.

Single Zener Diodes Part Context

This component belongs to the 1N4460–1N4496 series of 1.5 Watt glass Zener diodes. The series provides extensive voltage selections from 3.3 V to 200 V. While primarily known for axial leads, surface mount equivalents exist in the D-5A MELF package format.

Single Zener Diodes Replacement Considerations

Direct replacements include other military-qualified Zener regulators meeting MIL-PRF-19500/406 specifications. Verify that any substitute maintains the same hermetic seal and metallurgical bond quality to ensure equivalent radiation and ESD resistance.

Single Zener Diodes FAQ

What is the specific metallurgical bond category for the 1N4461?

The 1N4461 utilizes Category III internal metallurgical bonds.

How does the 1N4461 handle electrostatic discharge?

It is non-sensitive to ESD, verified by MIL-STD-750 method 1020.