1N1373

Overview

The 1N1373 is a high-power Zener diode manufactured by Microchip Technology, designed for robust voltage regulation applications. It features an 82 V nominal Zener voltage with a ±10% tolerance and a substantial 10 W power dissipation rating. The component utilizes a stud mount configuration within the DO-203AA (DO-4) package, ensuring efficient thermal management for high-current environments. Qualified for demanding operational conditions, it supports stable performance in industrial and military-grade systems requiring precise voltage reference or protection.

Feature Summary

• Provides fixed output voltage regulation under varying input conditions
• High power handling capability of 10 Watts for robust operation
• Stud mount construction in DO-203AA package for superior heat dissipation

Applications

• Industrial power supply voltage regulation
• Military-grade electronic circuit protection
• High-power voltage reference circuits

Procurement Notes

Verify the specific ordering suffix to confirm exact electrical tolerances and mechanical variations, as these do not alter the fundamental function but define specific manufacturing batches. Ensure compatibility with existing thermal management infrastructure due to the stud mount design. Confirm that the DO-203AA footprint matches your assembly requirements before finalizing procurement decisions.

Selection Notes

Select this component when high power dissipation and precise voltage regulation are critical. The 82 V rating suits specific mid-range voltage references. Consider the stud mount requirement for mounting hardware and thermal interface materials. Evaluate the ±10% tolerance against circuit sensitivity requirements to ensure adequate margin for voltage drift under load.

Part Context

This device belongs to Microchip's legacy high-power Zener diode portfolio, often utilized in replacement scenarios for older industrial equipment. It shares functional similarities with other high-wattage Zener regulators but is distinct due to its specific 82 V rating and DO-203AA form factor. Its qualification standards align with rigorous reliability requirements typical of defense and aerospace electronics.

Replacement Considerations

Direct substitutes must match the 82 V Zener voltage, 10 W power rating, and DO-203AA stud mount package. Verify thermal resistance characteristics to ensure equivalent heat dissipation capabilities. Cross-reference manufacturer-specific pinout and mounting hole dimensions to guarantee physical compatibility during retrofitting.

FAQ

What is the primary function of the 1N1373?

It serves as a voltage regulator diode, maintaining a fixed 82 V output despite input fluctuations.

How is the 1N1373 physically mounted?

It uses a stud mount configuration housed in a DO-203AA (DO-4) package for secure attachment and thermal transfer.