1N4694/TR

Overview

The Microchip Technology 1N4694/TR is a single silicon Zener diode designed for voltage regulation applications. It features an 8.2 V nominal Zener voltage with a ±5% tolerance and operates at a test current of 50 µA. The device supports a maximum power dissipation of 500 mW and exhibits a low reverse leakage current of 1 µA. Packaged in the DO-7 (DO-204AA) axial leaded format, it is supplied in tape and reel configuration for automated surface mount or through-hole processing. The component functions as a voltage regulator within a wide temperature range.

Feature Summary

• Provides stable voltage regulation using a single Zener junction structure
• Engineered for low noise performance suitable for sensitive circuits
• Utilizes a standard axial leaded package compatible with automated assembly processes

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Biasing networks for semiconductor devices

Procurement Notes

Verify that the specific suffix /TR indicates tape and reel packaging rather than bulk supply. Confirm the manufacturer designation matches Microchip Technology to ensure compliance with specified electrical tolerances and quality standards. Cross-reference the DO-7 package dimensions against the target PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when an 8.2 V regulation point is required with moderate power handling capabilities. The axial leaded form factor suits designs prioritizing mechanical robustness over compact footprint constraints. Ensure the operating environment remains within the specified thermal limits to maintain long-term stability and prevent thermal runaway during continuous operation.

Part Context

This part belongs to the standard Zener diode family manufactured by Microchip Technology. It shares functional similarities with other axial leaded regulators but is distinguished by its specific 8.2 V breakdown voltage and 500 mW power rating. The /TR suffix differentiates it from bulk-packaged variants, indicating readiness for high-volume automated placement equipment.

Replacement Considerations

Direct substitutes include the CDLL4694/TR variant offered by the same manufacturer, which utilizes a similar regulatory function. Other generic 1N4694 equivalents may be considered if electrical parameters such as voltage tolerance and leakage current align with the original design specifications.