1N2992A

Overview

The Microchip Technology 1N2992A is a single Zener diode with a nominal voltage of 39V and a tolerance of ±5%. It features a maximum power rating of 10W (10,000mW) and a maximum Zener impedance of 11 Ohms. The component is housed in a DO-4 package, which supports chassis or stud mounting for efficient thermal management.

Feature Summary

• High power dissipation capability of 10 watts for robust operation
• Precision voltage regulation with ±5% tolerance at 39V
• Designed for chassis or stud mounting to facilitate heat sinking

Applications

• High-power voltage regulation circuits
• Overvoltage protection systems requiring robust thermal handling
• Industrial equipment power supplies

Procurement Notes

Verify the manufacturer source carefully, as the 1N2992A is an older component historically associated with Microsemi Corporation, now part of Microchip Technology. Confirm that the specific unit received matches the required ±5% tolerance and 10W power rating specifications. Ensure the DO-4 package type is compatible with your chassis or stud mounting requirements before finalizing procurement.

Selection Notes

Select this component when a stable 39V reference is needed in high-power applications. The DO-4 package allows for direct mounting to heatsinks, making it suitable for environments where standard surface-mount packages would overheat. Ensure the circuit design accounts for the 11 Ohm maximum impedance to maintain regulation accuracy under varying load conditions.

Part Context

The 1N2992A belongs to the family of 10-watt Zener diodes, originally specified by Microsemi Corporation. These components are designed for rugged industrial and military applications where reliability and thermal stability are critical. The DO-4 package provides a standardized form factor for through-hole and panel mounting solutions.

Replacement Considerations

The 1N2992B is a documented variant within the same series, typically offering different voltage ratings while maintaining similar power and package characteristics. Verify electrical parameters against the specific application requirements before substituting.