1N2831RB

Overview

The 1N2831RB is a single silicon Zener diode manufactured by Microchip Technology, housed in the TO-204AD (TO-3) through-hole package. It features a nominal Zener voltage of 51 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 50 W and has a maximum dynamic impedance of 5.2 Ohms. The component utilizes a flange mount configuration with a metal case where the cathode is connected to the housing.

Feature Summary

• High power handling capability suitable for robust voltage regulation applications
• Hermetic sealing available in specific variants for harsh environment reliability
• Metal flange mount construction for efficient thermal management

Applications

• High-power voltage reference circuits
• Overvoltage protection in industrial systems
• Power supply regulation stages

Procurement Notes

Verify the specific suffix designation when ordering, as it determines the exact tolerance and environmental qualification level. Confirm that the required variant matches the intended application's thermal and electrical constraints. Ensure compatibility with existing mounting hardware due to the TO-3 package dimensions. Cross-reference manufacturer documentation for any updates regarding material compliance or pinout configurations before finalizing procurement.

Selection Notes

Select this component based on the requirement for a 51 V breakdown voltage and high power dissipation capacity. The TO-204AD package necessitates adequate heatsinking infrastructure. Evaluate the ±5% tolerance against circuit precision requirements. Consider alternative suffixes if lower tolerance or specific military qualifications are needed, ensuring the selected part meets all system-level voltage and current specifications.

Part Context

This component belongs to the 1N2831 series of 50 Watt Zener diodes produced by Microchip Technology. The series offers various tolerance grades and environmental ratings distinguished by alphanumeric suffixes. These diodes are designed for applications requiring stable voltage regulation under significant power loads, utilizing the traditional TO-3 metal can package for durability and thermal performance.

Replacement Considerations

Compatible substitutes include JANTX1N2831RA and other 1N2831 series variants with matching 51 V and 50 W ratings. Verify that replacement parts maintain the same TO-204AD footprint and pinout configuration. Ensure electrical parameters such as dynamic impedance and leakage current fall within acceptable limits for the specific circuit design.