1N2985A

Overview

The 1N2985A is a 10 W Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 22 V with a tolerance of ±5%. The device utilizes a stud-mount configuration in the DO-213AA package, designed for chassis mounting applications. Key electrical parameters include a maximum power dissipation of 10 W and a specified impedance of 5 Ohms.

Feature Summary

• High-power 10 W Zener regulation capability
• Stud-mount construction for direct chassis attachment
• Tight voltage tolerance for stable reference performance

Applications

• Voltage regulation in high-power circuits
• Chassis-mounted power supply protection
• Overvoltage clamping in industrial equipment

Procurement Notes

Verify the manufacturer marking matches Microchip Technology specifications. Confirm the package type is DO-213AA stud-mount. Ensure the Zener voltage tolerance aligns with system requirements. Check for authenticity through authorized distribution channels to avoid counterfeit components.

Selection Notes

Select this component when high power dissipation is required in a fixed voltage reference application. The stud-mount design facilitates thermal management via direct chassis contact. Verify that the 22 V breakdown voltage matches the circuit design constraints before integration.

Part Context

This part belongs to the standard Zener diode family used for voltage regulation. It serves as a discrete semiconductor solution for maintaining stable voltage levels in power electronics. The DO-213AA package is common for high-power axial lead devices requiring robust mechanical mounting.

Replacement Considerations

Cross-reference with other 10 W, 22 V Zener diodes in DO-213AA packages. Ensure substitute parts match the stud-mount configuration and thermal characteristics. Verify equivalent impedance and tolerance ratings for circuit compatibility.