1N4111-1

Single Zener Diodes Overview

The Microchip Technology 1N4111-1 is a 500 mW metallurgically bonded glass Zener diode in the axial-leaded DO-35 package. It provides a nominal Zener voltage of 17 V at a test current of 250 µA, with a maximum dynamic impedance of 0.05 Ohms and reverse leakage current of 40 µA. The device operates within a junction temperature range of -65°C to +175°C and features a maximum noise density of 40 µV/√Hz.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using an internal metallurgical bond for high reliability.
• Qualified per MIL-PRF-19500/435 standards for JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard design suitable for demanding environments.

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 your application, as qualification varies by suffix. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from mil-qualified parts. Ensure the ordering suffix matches the desired tolerance and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 17 V reference is needed with low dynamic impedance and high thermal stability. Consider the 5% standard tolerance unless tighter specifications are required via specific suffixes. Evaluate the power derating curve for ambient temperatures exceeding 25°C to ensure safe operation within the 500 mW limit.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes. These devices share common mechanical and electrical characteristics, differing primarily in their nominal breakdown voltages ranging from 1.8 V to 100 V. They are designed for applications requiring robust voltage regulation in harsh conditions.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N4111 variants with matching reliability levels such as JAN1N4111UR-1 for surface mount equivalents. Verify pinout compatibility and thermal resistance values when substituting across different package types like DO-213AA.