1N5945P/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5945P/TR8 is a glass-encapsulated Zener diode with a nominal voltage of 68 V and a maximum power dissipation of 1.5 W. It utilizes the DO-41 (DO-204AL) axial-leaded package and operates within a temperature range of -65°C to +175°C. The device features a maximum dynamic impedance of 120 Ohms, a test current of 5.5 mA, and a maximum reverse leakage current of 1 µA at 51.2 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs for enhanced reliability and thermal performance.
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.
• Inherently radiation hard as described in Microsemi MicroNote 050.

Single Zener Diodes Applications

• Voltage regulation over broad operating currents and temperatures
• High-reliability military equivalent screening applications
• Environments requiring inherent radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance status and tolerance level. Confirm tape and reel packaging availability directly with the manufacturer or authorized distributors, as standard quantities may vary. Ensure the component meets all required environmental and screening specifications for the intended application.

Single Zener Diodes Selection Notes

Select this component when a 68 V Zener voltage with 1.5 W power handling is required in an axial-leaded package. Consider the hermetically sealed glass body for superior thermal resistance and reliability compared to plastic alternatives. Evaluate the 120 Ohm dynamic impedance and 1 µA leakage current against circuit requirements.

Single Zener Diodes Part Context

This part belongs to the 1N5913BG–1N5956BG series of 1.5 Watt Glass Zener Diodes. The series provides voltage regulation from 3.3 V to 200 V with various tolerance options. It is available in multiple package styles including DO-41, MELF, SMB, SMAJ, and Powermite, catering to diverse mounting and reliability needs.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N5945BG and 1N5945BPE3/TR8. Verify that replacement components match the 68 V nominal voltage, 1.5 W power rating, and DO-41 package dimensions. Ensure electrical characteristics such as dynamic impedance and leakage current are compatible with the original design specifications.