1N2982B

Overview

The Microchip Technology 1N2982B is a Zener diode designed for voltage regulation applications. It features an 18V nominal Zener voltage and supports a maximum current of 140mA. The device exhibits a dynamic impedance of 4 Ohms, ensuring stable performance under varying load conditions. This component utilizes a stud-mount package configuration, facilitating direct thermal dissipation to heatsinks or chassis structures. It belongs to the broader category of Zener diodes within the Diodes & Rectifiers subcategory.

Feature Summary

• Provides precise voltage regulation through stable Zener breakdown characteristics
• Utilizes a stud-mount package design for efficient thermal management in high-power scenarios
• Engineered with low dynamic impedance to maintain consistent output voltage stability

Applications

• High-power voltage reference circuits requiring robust thermal handling
• Industrial power supply regulation systems utilizing stud-mount configurations
• Military and aerospace electronic assemblies demanding ruggedized voltage regulation components

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact electrical tolerances and material specifications. Confirm RoHS compliance status as indicated in the datasheet, noting that certain military variants may differ from commercial standards. Ensure the stud-mount package dimensions match the mechanical constraints of the target application before finalizing procurement orders.

Selection Notes

Select this component when a stud-mount form factor is required for superior heat dissipation compared to standard axial leads. Evaluate the 18V Zener voltage requirement against circuit needs to ensure proper biasing. Consider the 140mA current rating to verify compatibility with the expected load currents in the voltage regulation topology without exceeding thermal limits.

Part Context

This part falls under the Zener Diodes product line manufactured by Microchip Technology. It serves as a specialized voltage regulator component distinct from general-purpose rectifier diodes. The stud-mount variant offers mechanical advantages for high-reliability environments where vibration resistance and thermal conductivity are critical design parameters for long-term operational stability.

Replacement Considerations

Consult official cross-reference guides for equivalent stud-mount Zener diodes with matching 18V ratings. Verify that substitute components support similar current handling capabilities and dynamic impedance values to maintain circuit performance integrity.