1N4117-1

Single Zener Diodes Overview

The Microchip Technology 1N4117-1 is a 500 mW metallurgically bonded glass Zener diode in the axial-leaded DO-35 package. It provides a nominal Zener voltage of 25 V with a test current (IZT) of 250 µA and a maximum dynamic impedance (ZZT) of 0.01 Ω. The device features a maximum reverse current (IR) of 19.0 µA at 25 V, a maximum noise density of 40 µV/√Hz, and a temperature coefficient of +0.090 %/°C. Rated for junction temperatures from -65 °C to +175 °C, it is qualified per MIL-PRF-19500/435.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Hermetically sealed axial-lead glass DO-35 package
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability voltage regulation
• Military and aerospace circuits
• Harsh environment applications requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific reliability level required (JAN, JANTX, JANTXV, or JANS) as this affects qualification standards. Confirm RoHS compliance status, noting that commercial versions may differ from military grades. Ensure the ordering suffix matches the desired tolerance and packaging configuration before procurement.

Single Zener Diodes Selection Notes

Select based on the required Zener voltage tolerance (standard 5%, or tighter 2% and 1% options). Consider the operating temperature range and power derating requirements above 50 °C. Verify if surface mount alternatives like the DO-213AA or DO-216 packages are suitable for the design constraints.

Single Zener Diodes Part Context

This component belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes. These devices share the same metallurgically bonded glass construction and MIL-PRF-19500/435 qualification. They offer a broad selection of voltages from 1.8 V to 100 V within the same physical form factor.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N4117 variants meeting MIL-PRF-19500/435 specifications. Surface mount equivalents such as the 1N4117UR-1 (DO-213AA) or 1PMT4117 (DO-216) provide functional compatibility with different mounting requirements.