1N2834A

Overview

The 1N2834A is a silicon Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 68V with a power dissipation rating of 50W. The component utilizes a TO-204AD (TO-3) through-hole package, suitable for high-power thermal management. Electrical characteristics include a maximum Zener impedance of 8 Ohms and a test current of 180mA. This device is constructed as a unidirectional silicon junction, offering robust performance in industrial environments requiring stable voltage reference or protection.

Feature Summary

• High power dissipation capability of 50 watts for robust voltage regulation
• Hermetically sealed construction in a durable TO-3 metal case
• Silicon junction technology ensuring stable Zener voltage characteristics
• Through-hole mounting configuration for secure mechanical attachment

Applications

• Industrial power supply voltage regulation
• High-power circuit protection systems
• Voltage reference standards in test equipment
• Over-voltage protection in heavy-duty electronics

Procurement Notes

Verify the specific suffix code on the component marking to confirm exact tolerance and hermetic sealing status, as variations exist within the 1N2834 family. Confirm RoHS compliance requirements against the specific orderable part number, as legacy versions may differ. Ensure the TO-3 package dimensions match the target PCB or chassis cutout specifications before finalizing procurement orders.

Selection Notes

Select this component when a 68V regulation point is required with significant power handling capabilities exceeding standard surface-mount options. The TO-3 package necessitates consideration for thermal interface materials and heatsinking strategies due to the 50W rating. Evaluate the 8 Ohm impedance specification against load transient requirements to ensure adequate regulation stability under varying current conditions.

Part Context

The 1N2834A belongs to the established series of high-power Zener diodes originally developed by Microsemi and now produced by Microchip Technology. These components are widely recognized in legacy and modern industrial designs for their reliability in harsh electrical environments. The TO-3 package remains a standard form factor for high-wattage discrete semiconductors requiring direct chassis mounting.

Replacement Considerations

Cross-reference with other manufacturers' 1N2834 equivalents such as those from Central Semiconductor or Digitron. Verify that substitute parts maintain the identical 68V Zener voltage, 50W power rating, and TO-3 package outline to ensure mechanical and electrical compatibility without redesigning the host system.