1N4119-1

Single Zener Diodes Overview

The Microchip Technology 1N4119-1 is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 28 V at a test current of 250 µA, with a maximum dynamic impedance of 200 Ohms and a reverse leakage current of 1 µA. The device features a noise density of 1 µV/√Hz and a temperature coefficient of +0.095 %/°C. Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels, it operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed internal metallurgical bond construction
• Qualified for high reliability applications including JANS level
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability aerospace and defense circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for the application, as the base part number covers multiple qualification grades. Confirm RoHS compliance status if environmental regulations apply, noting that commercial versions may differ from military qualified units. Ensure the ordering suffix matches the desired tolerance and packaging configuration.

Single Zener Diodes Selection Notes

Select this component for applications requiring stable voltage reference in harsh environments due to its radiation hardness and wide operating temperature range. Consider the positive temperature coefficient above 6.8 V when designing circuits sensitive to thermal drift. Verify that the 500 mW power dissipation rating aligns with the expected load conditions and ambient thermal environment.

Single Zener Diodes Part Context

This component belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes manufactured by Microchip Technology. These devices are JEDEC registered and utilize a standard axial-lead glass DO-35 package. The series offers extensive voltage selection from 1.8 V to 100 V with various tolerance options, serving as a robust solution for general-purpose and specialized voltage regulation tasks.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N4119 variants meeting MIL-PRF-19500/435 specifications. Surface mount equivalents such as the 1N4119UR-1 in DO-213AA package offer identical electrical characteristics for PCB layout flexibility.