1N2815A

Overview

The 1N2815A is a silicon unidirectional Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 17 V with a tolerance of ±10%. The device is rated for a maximum power dissipation of 50 W. It utilizes the TO-204AD (TO-3) through-hole package, which includes two pins and a mounting tab. The component is hermetically sealed and contains lead, making it RoHS non-compliant.

Feature Summary

• Hermetically sealed construction for environmental protection
• High power handling capability up to 50 watts
• Through-hole mounting via TO-204AD package

Applications

• Voltage regulation in high-power circuits
• Overvoltage protection systems
• Reference voltage sources in industrial equipment

Procurement Notes

Verify that the specific order suffix matches the required pin configuration and sealing type. Confirm lead content status if RoHS compliance is mandatory for the final assembly. Ensure the TO-204AD package dimensions align with the thermal management design requirements.

Selection Notes

Select this component when a robust, high-power Zener reference is required in a through-hole application. The TO-204AD package provides superior heat dissipation compared to smaller surface-mount alternatives. Consider the hermetic seal requirement for harsh environments where standard plastic packages may fail.

Part Context

This part belongs to the family of 50-watt Zener diodes produced by Microchip Technology. It serves as a rugged voltage regulator solution for applications demanding high reliability and significant power handling. The TO-204AD package is a legacy form factor often used in military and aerospace-grade electronics.

Replacement Considerations

Direct substitutes include other manufacturers' 1N2815 equivalents such as those from New Jersey Semi-Conductor Products. Verify that replacement parts maintain the same 17 V Zener voltage, 50 W power rating, and TO-204AD package footprint.