JANTXV1N4973US

Single Zener Diodes Overview

The JANTXV1N4973US is a hermetically sealed single Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 43 V with a 5% tolerance and operates at a test current of 30 mA. The device supports a maximum power dissipation of 5 W and handles a forward current of 1 A. It utilizes the D-5B-2 surface-mount package, measuring 5.72 mm in length, 3.76 mm in width, and 3.76 mm in height. Electrical characteristics include a maximum reverse leakage current of 2 µA, a Zener impedance of 20 Ohms, and a voltage temperature coefficient of 0.095 %/°C. The component is qualified to MIL-PRF-19500/356 standards and functions within an operating temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed construction for environmental protection
• Qualified to MIL-PRF-19500/356 military specifications
• Low dynamic impedance for stable regulation
• Extended thermal performance up to 175 °C

Single Zener Diodes Applications

• Military aerospace voltage regulation circuits
• High-reliability industrial power supplies
• Harsh environment reference voltage sources

Single Zener Diodes Procurement Notes

Verify the specific suffix US indicates the surface mount configuration distinct from axial variants. Confirm MIL-PRF-19500/356 qualification status is required for the intended application. Ensure the ordering part number matches the exact voltage and tolerance requirements. Check for RoHS compliance status as indicated in official documentation.

Single Zener Diodes Selection Notes

Select this component when a high-power 5 W surface-mount Zener diode is required for space-constrained designs. The D-5B-2 package offers a compact footprint compared to through-hole alternatives. Consider the 43 V nominal rating and 5% tolerance against circuit load requirements. Evaluate the thermal resistance characteristics for heat dissipation planning in enclosed assemblies.

Single Zener Diodes Part Context

This device belongs to the 1N4954US through 1N4990US series of 5 Watt surface mount voltage regulators. These components are designed for applications requiring robust performance under extreme conditions. The series provides various voltage options while maintaining consistent physical dimensions and electrical reliability standards defined by military specifications.

Single Zener Diodes Replacement Considerations

JAN1N4973US

Single Zener Diodes FAQ

What is the maximum operating temperature for this component?

The maximum operating temperature is +175 °C.

Does this diode meet military qualification standards?

Yes, it is qualified to MIL-PRF-19500/356.