1N3997A

Single Zener Diodes Overview

The Microchip Technology 1N3997A is a single silicon Zener diode designed for stud-mount applications. It features a nominal Zener voltage of 5.6 V with a tolerance of ±5%. The device operates at a test current of 445 mA and dissipates up to 10 W of power. It exhibits a maximum dynamic impedance of 1 Ω and a maximum reverse leakage current of 10 µA. The component is housed in a DO-203AA (DO-4) package, supporting an operating temperature range from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed metal-glass construction for environmental protection
• Stud-mount configuration for efficient thermal management
• High-power dissipation capability suitable for robust regulation tasks

Single Zener Diodes Applications

• Voltage regulation in high-power industrial systems
• Overvoltage protection circuits requiring hermetic sealing
• Military and aerospace electronic assemblies

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., RA, AE3) against project requirements, as these indicate variations in compliance or packaging. Confirm that the DO-4 stud-mount package aligns with the mechanical design. Ensure the manufacturer source is authorized to guarantee authenticity and traceability for critical applications.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, high-power Zener diode is required for stud-mount installation. The 5.6 V rating and 10 W dissipation make it suitable for demanding environments where standard surface-mount devices are insufficient. Verify thermal interface compatibility for the stud base.

Single Zener Diodes Part Context

This part belongs to the Microchip Technology series of single Zener diodes. These components are engineered for reliability in harsh conditions, utilizing silicon junction technology within a durable DO-203AA package. The series supports various voltage ratings while maintaining consistent performance characteristics across the product line.

Single Zener Diodes Replacement Considerations

Cross-reference with 1N3997RA or 1N3997AE3 for equivalent electrical specifications. Verify package dimensions and mounting hole patterns to ensure mechanical interchangeability without redesigning the PCB or chassis.