1N3993AE3

Single Zener Diodes Overview

The Microchip Technology 1N3993AE3 is a commercial-grade, stud-mount Zener diode with a nominal voltage of 3.9 V and a maximum power dissipation of 10 W. It features a standard polarity configuration where the cathode connects to the stud. The device operates within a junction temperature range of -65°C to +175°C and utilizes a DO-213AA (DO-4) package. Electrical characteristics include a maximum dynamic impedance of 2.0 Ohms at the test current of 640 mA, a reverse leakage current of 100 µA, and a temperature coefficient of -0.060 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed welded construction with internal solder bond for reliability.
• Capable of regulating voltage across a broad range of currents and temperatures.
• Inherently radiation hard as described in Microsemi MicroNote 050.
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.

Single Zener Diodes Applications

• Voltage regulation in military and aerospace systems.
• High-power reference circuits requiring thermal stability.
• Industrial equipment operating under harsh environmental conditions.

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance for commercial grade devices. Confirm the specific voltage tolerance requirements match the standard +/- 5% specification provided in the datasheet. Ensure mounting hardware specifications align with the 10-32 thread size on the DO-4 package. Check for any additional qualification levels if military standards are required.

Single Zener Diodes Selection Notes

Select this component when a high-power 10 W Zener diode is needed for low-voltage regulation applications. The negative temperature coefficient makes it suitable for specific compensation designs. Verify that the stud-mount installation method fits the mechanical constraints of the target system. Consider the weight and thermal resistance values for heat sink design calculations.

Single Zener Diodes Part Context

This part belongs to the 1N3993A through 1N3998A series of 10 Watt Zener diodes. These devices are JEDEC registered and offer voltage regulation values ranging from 3.9 V to 200 V. While primarily available in commercial grades, JAN, JANTX, and JANTXV military qualifications are available for most voltage values in this series.

Single Zener Diodes Replacement Considerations

Consult the factory for surface mount equivalents. Other parts in the 1N3993A-1N3998A series share similar packaging but differ in voltage ratings. Military qualified versions exist without the e3 suffix.