1N4099 (DO35)

Single Zener Diodes Overview

The Microsemi Corporation 1N4099 is a 6.8 V Zener voltage regulator diode housed in an axial-lead glass DO-35 (DO-204AH) package. It features an internal metallurgical bond and operates within a junction temperature range of -65 °C to +175 °C. The device provides a maximum power dissipation of 0.5 W, with a test current of 250 µA and a maximum dynamic impedance of 1.0 Ω at the specified operating point.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• High-reliability military and aerospace circuits
• Voltage regulation over broad ranges of current and temperature
• Low-noise reference applications requiring minimal capacitance

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level, such as JAN, JANTX, JANTXV, or JANS, as these prefixes dictate the screening standards. Confirm whether RoHS compliance is necessary, noting that commercial versions are available with the e3 suffix while military grades typically utilize tin-lead plating. Ensure the requested tolerance aligns with standard 5% availability or requires specific tighter tolerance suffixes.

Single Zener Diodes Selection Notes

Select this component when high reliability and radiation hardness are critical requirements for the application. The DO-35 package offers flexible axial-lead mounting suitable for through-hole implementations. Consider the noise density specifications if low-noise performance is essential, particularly for voltages at 6.8 V and above where the noise density remains below 40 μV / √Hz.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mW Zener regulators. These devices provide a wide selection of voltages from 1.8 to 100 V with various tolerance options. They are JEDEC registered and designed to meet stringent military standards, offering robust performance in demanding environments compared to standard commercial equivalents.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts within the 1N4099-1 through 1N4135-1 series or the 1N4614-1 through 1N4627-1 series. Surface mount alternatives are available in the DO-213AA MELF package or the DO-216 tabbed surface mount configuration.