1N4967US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4967US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 24 V. It operates within the 1N4954US through 1N4996US series and features a maximum power dissipation of 5 Watts at an ambient temperature of 140°C, derating linearly to zero at 175°C. The device exhibits a dynamic impedance (ZZT) of 5.0 Ohms at a test current (IZT) of 50 mA and a maximum reverse leakage current of 2 µA at 18.2 V. It utilizes a voidless hermetically sealed glass package in the SQ-MELF or D-5B form factor.

Single Zener Diodes Feature Summary

• Military qualified to MIL-PRF-19500/356 standards for high-reliability applications
• Voidless hermetically sealed glass construction with internal metallurgical bonds
• Triple-layer passivation for enhanced robustness
• Inherently radiation hard and non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability aerospace systems
• Defense electronics requiring failure-intolerant components
• Harsh environment circuit protection
• Precision voltage regulation in military-grade equipment

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the /TR suffix to confirm tape and reel packaging availability. Confirm compliance with RoHS directives as indicated in the manufacturer's environmental documentation. Ensure the ordering suffix matches the required tolerance level, noting that standard tolerances are ±5% without additional letters. Validate that the component meets the specific military qualification requirements mandated by your system design specifications.

Single Zener Diodes Selection Notes

Select this component when a 5 Watt surface mount Zener diode with military qualification is required. The 1N4967US/TR provides a 24 V reference point with a 5.0 Ohm dynamic impedance. Consider the operating temperature range of -65°C to +175°C for extreme environments. Verify that the SQ-MELF package dimensions fit the available PCB real estate compared to axial-leaded alternatives.

Single Zener Diodes Part Context

This device belongs to the 1N4954US through 1N4996US series of 5 Watt Zener regulators manufactured by Microsemi Scottsdale Division, now part of Microchip Technology. These components are industry-recognized for their robust construction and are designed for applications where standard commercial parts would fail. The series offers extensive voltage selections from 3.3 V to 390 V.

Single Zener Diodes Replacement Considerations

JAN1N4967CUS

Single Zener Diodes FAQ

What is the thermal resistance of the 1N4967US/TR?

The thermal resistance is 7°C/W from junction to end cap.

How is polarity indicated on the package?

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