1N5939PE3/TR12

Single Zener Diodes Overview

The Microsemi 1N5939PE3/TR12 is a 1.5-watt glass-encapsulated Zener diode with a nominal voltage of 39V and a 5% tolerance. It operates within a temperature range of -65°C to +175°C and features a DO-41 axial lead package. The device provides hermetic sealing, radiation hardness, and ESD immunity per MIL-STD-750 method 1020.

Single Zener Diodes Feature Summary

• Hermetically sealed glass body construction for high reliability
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge (ESD)
• Metallurgically enhanced internal contact design

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High reliability applications requiring source control drawings
• Screening in accordance with MIL-PRF-19500 standards

Single Zener Diodes Procurement Notes

Verify the specific suffix 'P' against official documentation to confirm plastic casing versus standard glass variants. Confirm RoHS compliance status as commercial grade versions may differ from military screening levels. Ensure tape and reel packaging matches the TR suffix requirement.

Single Zener Diodes Selection Notes

Select this component for applications requiring stable voltage regulation in harsh environments. Consider the thermal resistance and power derating curves for proper heat dissipation. Verify that the 5% tolerance meets circuit requirements compared to tighter or looser options available in the series.

Single Zener Diodes Part Context

This part belongs to the 1N5913BG through 1N5956BG series of 1.5-watt Zener diodes. The series offers voltages from 3.3V to 200V with various tolerances. Both glass (G suffix) and plastic (P suffix) axial-leaded packages are available from Microsemi.

Single Zener Diodes Replacement Considerations

Equivalent surface mount options include the 1N5913BUR-1 through 1N5956BUR-1 series in the DO-213AB MELF package. Other tabbed surface mount equivalents are available in SMB, SMAJ, and Powermite packages.