1N4114 (DO35)

Single Zener Diodes Overview

The Microsemi Corporation 1N4114 (DO35) is a silicon unidirectional Zener voltage regulator diode housed in a hermetically sealed glass axial-lead DO-35 package. It provides a nominal Zener voltage of 20V with a maximum dynamic impedance of 0.01 Ohms and a test current of 250 µA. The device supports a rated average power dissipation of 0.5W, operates within a junction temperature range of -65°C to +175°C, and features an internal metallurgical bond for high reliability.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction
• Hermetically sealed glass axial-lead packaging
• Low noise density performance
• Radiation hard design

Single Zener Diodes Applications

• High reliability voltage regulation
• Military and aerospace circuits
• Broad operating current and temperature environments

Single Zener Diodes Procurement Notes

Verify the specific suffixes on the part number to confirm the required qualification level, tolerance, and compliance status. Ensure the ordering code matches the desired metallurgical bond and RoHS requirements as defined by the manufacturer's nomenclature system.

Single Zener Diodes Selection Notes

Select this component when a robust, low-noise Zener reference is needed for harsh environments. Consider the available voltage tolerances and the requirement for MIL-PRF-19500/435 qualification levels to ensure compatibility with strict reliability standards.

Single Zener Diodes Part Context

This device belongs to the 1N4099 through 1N4135 series of 500 mW Zener diodes. These components are JEDEC registered and offer extensive voltage selection from 1.8V to 100V. They are designed for applications requiring stable regulation over wide ranges of current and temperature variations.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other 1N4114 variants with different suffixes or equivalent parts from the 1N4614 series that share the same 20V rating and DO-35 package form factor.

Single Zener Diodes FAQ

What is the maximum noise density specified for this diode?

The maximum noise density is 40 μV / √Hz at the test current.

How is the polarity indicated on the device?

Polarity is indicated by a band on the cathode end of the glass body.