1N2829B

Overview

The 1N2829B is a silicon Zener voltage regulator diode manufactured by Microchip Technology. It features a nominal Zener voltage of 47V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 50W and operates in a through-hole TO-3 package. Key electrical characteristics include a leakage current of 10µA and a maximum forward voltage of 1.5V. The component utilizes internal solder bond construction and is hermetically sealed.

Feature Summary

• Hermetically sealed welded construction for environmental protection
• Internal solder bond construction for mechanical stability
• High power handling capability suitable for robust regulation applications

Applications

• Voltage regulation in high-power circuits
• Overvoltage protection systems
• Reference voltage generation in industrial equipment

Procurement Notes

Verify the manufacturer source, as the part was originally associated with Microsemi and Motorola before acquisition. Confirm RoHS compliance status, as historical data indicates lead-containing variants may exist. Ensure the package matches the required TO-3 or TO-204AD footprint specifications for your design integration.

Selection Notes

Select this component when a 47V Zener reference with 50W power rating is required. Consider the TO-3 package size constraints and thermal management needs due to the high power dissipation. Verify that the ±5% voltage tolerance meets the circuit precision requirements.

Part Context

This part belongs to the JEDEC registered 1N28xx series of silicon Zener diodes. The series includes parts ranging from 1N2804 to 1N2846B. These components are characterized by their rugged construction and high power capabilities, making them suitable for demanding electronic environments.

Replacement Considerations

Check for equivalent parts within the 1N2829B family or other manufacturers offering 47V 50W Zener diodes in TO-3 packages. Ensure pinout compatibility and thermal performance match the original design specifications.