1N4112DUR-1

Single Zener Diodes Overview

The Microchip Technology 1N4112DUR-1 is a 500 mW Zener voltage regulator housed in a surface mount glass DO-213AA package. It provides a nominal Zener voltage of 18 V with a maximum dynamic impedance of 0.05 Ohms and a test current of 250 µA. The device features a maximum reverse leakage current of 13.7 µA at 16.8 V and a noise density of 40 µV/√Hz. It operates within a junction temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass construction for high reliability
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design suitable for harsh environments
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020

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 required (JAN, JANTX, JANTXV, or JANS) as this affects screening and qualification. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military qualified parts. Ensure the ordering suffix matches the desired tape and reel or bulk packaging configuration.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The DO-213AA package offers a direct footprint equivalent to the axial-leaded 1N4112 series. Consider the positive temperature coefficient above 5.6 V and the low noise density characteristics for precision reference designs.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR-1 through 1N4135UR-1 series of 500 mW metallurgically bonded glass surface mount Zener diodes. These devices are designed as surface mount equivalents to JEDEC registered 1N4099 through 1N4135 series components, providing a robust solution for space-constrained high-reliability PCB layouts.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers include CDLL4112-1.