1N2983A

Overview

The Microchip Technology 1N2983A is a high-power Zener diode with a nominal voltage of 19V and a power rating of 10W. It features a tolerance of ±5% or 10% depending on the specific suffix (e.g., AE3). The device utilizes silicon technology and is housed in a DO-213AA (DO-4) stud mount package, which is hermetically sealed. It operates within a temperature range of -65°C to +175°C and is qualified per MIL-PRF-19500/124 for military levels.

Feature Summary

• Provides stable voltage regulation in high-power applications up to 10W
• Hermetically sealed glass-to-metal construction for environmental protection
• Stud mount design facilitates efficient heat dissipation via chassis mounting
• Qualified for extreme operating temperatures ranging from -65°C to +175°C

Applications

• Military aerospace voltage regulation systems
• High-reliability industrial power supply protection
• Overvoltage clamping in harsh environment electronics

Procurement Notes

Verify the specific suffix (e.g., AE3, AC) to confirm tolerance and qualification level. Ensure the supplier provides traceable documentation for MIL-PRF-19500 compliance if required. Confirm package integrity as the DO-4 stud mount requires careful handling to maintain hermetic seal standards during installation.

Selection Notes

Select this component when a robust, high-power Zener diode is needed for critical voltage reference or protection circuits. The stud mount package is essential for thermal management in space-constrained or high-current scenarios. Consider the specific tolerance requirements (±5% vs ±10%) based on circuit precision needs.

Part Context

This part belongs to the 1N2970 through 1N3015B series of 10-watt Zener diodes manufactured by Microsemi (now Microchip). These devices are designed for rugged applications requiring high power dissipation and reliability. The series covers a broad voltage range, with the 1N2983A specifically providing a 19V regulation point.

Replacement Considerations

Compatible substitutes include other 19V 10W Zener diodes in DO-4 packages from manufacturers like General Semiconductor or Vishay, provided they meet MIL-PRF-19500 specifications. Verify pinout compatibility and thermal resistance characteristics before substitution.