1N4119UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4119UR-1/TR is a glass surface mount Zener voltage regulator with a nominal voltage of 28V. It operates within the 1N4099UR through 1N4135UR series and utilizes a DO-213AA (SOD80/MLL34) MELF package. The device provides a steady-state power dissipation of 0.5 watts at an end cap temperature below 100°C or ambient temperature below 25°C. Electrical characteristics include a maximum Zener impedance of 0.01 ohms, a reverse current of 40 µA, and a typical temperature coefficient of 0.085 %/°C. The component supports tape and reel packaging options.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF package
• Inherently radiation hard design
• ESD nonsensitive per MIL-STD-750 Method 1020
• Minimal capacitance for high-frequency stability

Single Zener Diodes Applications

• Voltage regulation in harsh environments
• Reference voltage sources in aerospace systems
• Protection circuits requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required configuration. The 'TR' suffix indicates tape and reel packaging, while the absence of a '-1' suffix denotes standard metallurgical construction rather than internal-metallurgical-bond options. Confirm RoHS compliance status based on the specific e3 designation if applicable to the exact part number variant ordered.

Single Zener Diodes Selection Notes

Select this component when a 28V Zener reference is needed in a surface mount form factor. Ensure the application can accommodate the 0.5W power rating under expected thermal conditions. Consider the tight 0.01 ohm impedance for stable regulation. Verify that the operating temperature range of -65°C to +175°C meets system requirements.

Single Zener Diodes Part Context

This device belongs to the Microsemi Scottsdale Division 1N4099UR through 1N4135UR series of 0.5-watt glass surface mount Zeners. These parts serve as surface mount equivalents to JEDEC registered axial-leaded diodes. The series offers voltages from 1.8 to 100 volts with standard 5% tolerances.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4119. Surface mount alternatives within the same family are MLL4119. Military qualified versions with internal metallurgical bonds exist as 1N4119UR-1.