1N4972US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4972US/TR is a surface-mount Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39V with a 5% tolerance and operates at a test current of 30mA. The device supports a maximum power dissipation of 5W and exhibits a low reverse leakage current of 2µA. Packaged in the SQ SMT form factor, it is qualified to MIL-PRF-19500/356 standards and offers hermetic sealing for reliability in demanding environments.

Single Zener Diodes Feature Summary

• Hermetically sealed construction ensuring environmental protection
• Qualified to MIL-PRF-19500/356 military specifications
• Low dynamic impedance characteristics for stable regulation
• Surface mount packaging optimized for automated assembly

Single Zener Diodes Applications

• Military aerospace electronic systems
• High-reliability industrial control circuits
• Precision voltage reference networks
• Overvoltage protection stages

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., TR) against the official datasheet to confirm tape-and-reel packaging requirements. Ensure the procurement documentation explicitly states compliance with MIL-PRF-19500/356. Confirm that the manufacturer source is authorized to supply JANTXV or JANS grade components as indicated by the part number prefix.

Single Zener Diodes Selection Notes

Select this component when a 39V regulation point is required in a ruggedized environment. The 5W power rating allows for significant current handling compared to standard small-signal diodes. Verify that the operating temperature range of -65°C to +175°C aligns with the system's thermal constraints.

Single Zener Diodes Part Context

This part belongs to the 1N49xx series of 5-watt voltage regulator diodes manufactured by Microchip Technology. These devices are engineered for high-power applications requiring precise voltage control. The US package designation indicates a specific surface-mount footprint compatible with modern PCB layouts while maintaining the robustness of traditional axial designs.

Single Zener Diodes Replacement Considerations

Consult the official Microchip cross-reference guide for verified equivalents. Generic replacements may not meet the MIL-PRF-19500/356 qualification or hermetic sealing requirements essential for this application.