1N4484

Single Zener Diodes Overview

The Microchip Technology 1N4484 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a voidless hermetically sealed glass package with an internal metallurgical bond and tungsten slugs. The device provides a nominal Zener voltage of 62V at a test current of 4.0 mA, with a maximum dynamic impedance of 80 Ohms. It supports a steady-state power dissipation of 1.5 W and operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Voidless hermetically sealed glass construction with internal metallurgical bonds
• Triple-layer passivation for robust protection
• Qualified per MIL-PRF-19500/406 for JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability voltage regulation
• Military and aerospace systems
• Circuits where failure cannot be tolerated

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these designations indicate different qualification standards under MIL-PRF-19500/406. Confirm terminal plating options, noting that tin/lead terminals are standard while RoHS-compliant matte/tin versions are available only for commercial grade devices. Ensure the ordering suffix matches the desired tolerance and compliance requirements.

Single Zener Diodes Selection Notes

Select the 1N4484 when a precise 62V reference is needed in harsh environments. The device offers standard 5% tolerance by default, with tighter 2% and 1% options available via specific suffixes. Consider the DO-41 axial-lead package for through-hole mounting or the D-5A MELF surface mount variant if space constraints require it. Verify thermal derating curves for operation above ambient temperatures.

Single Zener Diodes Part Context

This component belongs to the 1N4460–1N4496 series of 1.5-watt Zener diodes. The series covers a wide voltage range from 3.3V to 200V. The 1N4484 specifically addresses the mid-range voltage requirement within this family, sharing common packaging and qualification standards with its peers.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4484, JANTX1N4484, JANTXV1N4484, and JANS1N4484, which share identical electrical characteristics but differ in reliability qualification levels.