2EZ3.9D2/TR8

Single Zener Diodes Overview

The Microsemi Corporation 2EZ3.9D2/TR8 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9V with a tight tolerance of ±2%. The device is rated for a maximum power dissipation of 1.19W and operates within a temperature range of -65°C to +175°C. It utilizes the DO-41 (DO-204AL) axial leaded plastic package, providing an isolated case connection suitable for through-hole mounting.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance on the Zener voltage.
• Capable of operating at high DC currents or full power ratings when adequate heat sinking is provided.
• Constructed using silicon technology in a robust plastic encapsulated DO-41 package.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable low-voltage regulation.
• Overvoltage protection stages in electronic systems.
• General-purpose voltage regulation in industrial equipment.

Single Zener Diodes Procurement Notes

Verify compliance requirements before procurement, as this specific part number suffix indicates non-RoHS status. Confirm that the supplier provides original manufacturer documentation to ensure authenticity. Check for availability of military equivalent screening levels if higher reliability standards are required for the application environment.

Single Zener Diodes Selection Notes

Select this component when a precise 3.9V regulation point is needed with tight tolerance constraints. Ensure the circuit design accommodates the 1.19W power rating and provides sufficient thermal management. Consider the extended temperature range capabilities for operation in harsh environments compared to standard commercial grade alternatives.

Single Zener Diodes Part Context

This component belongs to the 2EZ series of axial-leaded Zener diodes from Microsemi. The series offers a wide range of voltage selections from 3.6V to 200V in the same DO-41 package form factor. Different suffixes indicate varying tolerance levels, allowing designers to choose between standard and tighter specifications while maintaining consistent physical dimensions and mounting characteristics.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 2EZ series variants with matching voltage and tolerance, such as 2EZ3.9D5 for 5% tolerance. Cross-reference with Microchip datasheets for updated equivalents following the acquisition of Microsemi's discrete product lines.