1N4484US

Single Zener Diodes Overview

The Microchip Technology 1N4484US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 62.0 V and a steady-state power dissipation rating of 1.5 W at 25°C ambient temperature. It operates within a junction and storage temperature range of -65°C to +175°C, featuring a maximum dynamic impedance of 80 Ohms at the test current of 4.0 mA. The device utilizes a voidless hermetically sealed glass package with tungsten slugs and internal metallurgical bonds, conforming to MIL-PRF-19500/406 standards for JAN, JANTX, JANTXV, and JANS reliability levels.

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 high-reliability environments
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability voltage regulation where failure cannot be tolerated
• Military and aerospace electronic systems
• Circuits requiring broad operating current and temperature stability

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level (JAN, JANTX, JANTXV, or JANS) as these designations define the qualification standard. Confirm RoHS compliance status if applicable, noting that compliant versions are available only on commercial grade parts. Ensure the procurement documentation references the correct datasheet revision T4-LDS-0183-1 Rev. 1 for accurate electrical parameters.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with a 62 V nominal voltage is required for ruggedized applications. Consider the 80 Ohm dynamic impedance and 4.0 mA test current for circuit biasing calculations. Verify that the D-5A MELF package dimensions fit the PCB layout constraints and that the operating temperature range up to +175°C meets the system thermal requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of voidless hermetically sealed surface mount Zener diodes. These devices serve as the surface mount equivalent of popular JEDEC registered axial-lead series, offering identical electrical characteristics in a compact form factor suitable for automated assembly and space-constrained designs.

Single Zener Diodes Replacement Considerations

Direct replacements include other qualified levels within the same series such as 1N4484US/JAN, 1N4484US/JANTX, 1N4484US/JANTXV, or 1N4484US/JANS, provided the specific reliability tier matches the application requirement.