1N4486US

Single Zener Diodes Overview

The Microchip Technology 1N4486US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 75 V and a maximum power dissipation of 1.5 W at 25 °C ambient temperature. It features a hermetically sealed void-less glass package in the D-5A MELF form factor, weighing 193 milligrams. The device exhibits a maximum dynamic impedance of 130 Ohms at a test current of 3.3 mA and a maximum reverse leakage current of 0.25 µA at 75 V. It operates within a junction and storage temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for high reliability.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge.

Single Zener Diodes Applications

• High-reliability aerospace and defense circuits where failure is not tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Harsh environment electronics requiring robust surface mount components.

Single Zener Diodes Procurement Notes

Verify the specific military qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as this determines the testing standards and reliability metrics. Confirm RoHS compliance status if applicable, noting that compliant versions are typically commercial grade only. Ensure the ordering suffix matches the desired tolerance and environmental rating specifications.

Single Zener Diodes Selection Notes

Select the 1N4486US for applications requiring a 75 V reference in a compact surface mount footprint. Consider the 130 Ohm dynamic impedance for noise sensitivity requirements. Evaluate the thermal resistance of 20 °C/W for heat dissipation needs. Verify that the D-5A MELF package dimensions fit the PCB layout constraints.

Single Zener Diodes Part Context

This component belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These devices serve as surface mount equivalents to popular JEDEC registered axial-lead series. The series provides extensive voltage selections from 3.3 to 200 volts with standard 5% tolerance options.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N4486 variants with different qualification suffixes such as JANTX1N4486US or JANS1N4486US. Commercial grade equivalents may lack the hermetic sealing and military testing. Verify pinout compatibility and thermal characteristics when substituting.