1N2990B

Overview

The Microchip Technology 1N2990B is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 33V and supports a maximum current of 75mA. The device exhibits a dynamic impedance of 9 Ohms, ensuring stable performance under varying load conditions. This component utilizes a stud-mount package configuration, facilitating robust thermal dissipation and secure mechanical attachment to heat sinks or chassis structures for high-power environments.

Feature Summary

• Provides precise voltage regulation at a nominal 33V potential
• Supports continuous operation up to 75mA with low dynamic impedance
• Utilizes a stud-mount package for enhanced thermal management

Applications

• High-power voltage reference circuits
• Industrial power supply regulation
• Overvoltage protection systems

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact electrical tolerances and qualification levels. Confirm RoHS compliance status as indicated in the datasheet. Ensure the stud-mount interface matches your thermal design requirements. Validate that the 33V Zener voltage aligns with your circuit specifications before procurement.

Selection Notes

Select this component when a rugged, stud-mounted Zener diode is required for high-current regulation. The 75mA rating and 9 Ohm impedance suit applications demanding stable voltage references under significant load variations. Consider the physical mounting constraints of the stud package during PCB or chassis layout planning.

Part Context

This part belongs to the standard Zener diode family manufactured by Microchip Technology. It serves as a discrete semiconductor solution for voltage control tasks. The 1N2990B designation indicates a specific voltage and current rating within the broader series of regulated diodes offered by the manufacturer for industrial and commercial electronics.

Replacement Considerations

Consult official substitution guides for compatible equivalents. Verify that any alternative maintains the 33V Zener voltage, 75mA current capacity, and stud-mount form factor to ensure functional compatibility without redesigning the thermal interface.