1N4483US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4483US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 56 V and a maximum dynamic impedance of 70 Ohms at the test current. It operates within a junction temperature range of -65 °C to +175 °C and dissipates up to 1.5 W of steady-state power. The device utilizes a voidless hermetically sealed glass MELF package (D-5A) with internal metallurgical bonds, ensuring robust construction for high-reliability applications.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with tungsten slugs
• Internal Category 1 metallurgical bonds for enhanced structural integrity
• Triple-layer passivation for environmental protection
• Qualified per MIL-PRF-19500/406 for military reliability standards

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Military and aerospace electronic systems
• Radiation-hardened circuit designs
• Temperature-compensated reference sources

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level and tolerance. Confirm RoHS compliance status if applicable, as commercial versions differ from qualified levels. Ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference the datasheet electrical characteristics against the specific lot marking to confirm performance parameters.

Single Zener Diodes Selection Notes

Select this component when a 56 V Zener reference is required in a surface mount form factor. Consider the 1.5 W power dissipation capability and the wide operating temperature range for harsh environments. Evaluate the 70 Ohm dynamic impedance for noise sensitivity requirements. Verify that the D-5A MELF footprint fits the available PCB space and soldering profile.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These devices are designed as surface mount equivalents to traditional axial-lead JEDEC registered series. The series provides a broad selection of voltages from 3.3 V to 200 V, all sharing the same hermetically sealed voidless glass package construction.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N4483 variants such as 1N4483US or JANTXV1N4483CUS/TR, provided the qualification level and tolerance match the design requirements. Verify that any substitute maintains the same MELF package dimensions and thermal characteristics.