1N2977B

Overview

The 1N2977B is a unidirectional silicon voltage regulator diode manufactured by Microchip Technology. It features a nominal Zener voltage of 13 V and a power dissipation rating of 10 W. The component utilizes a DO-4 stud mount package configuration. Electrical characteristics include a maximum DC Zener current specified at a 75°C stud temperature, with typical temperature coefficients defined for voltage regulation stability across operating ranges.

Feature Summary

• High-power voltage regulation capability with 10 W dissipation rating
• Robust mechanical construction using DO-4 stud mount packaging
• Unidirectional operation designed for stable DC reference applications

Applications

• Industrial power supply voltage regulation
• High-current circuit protection systems
• Stable voltage reference generation in heavy-duty electronics

Procurement Notes

Verify the manufacturer origin carefully as the 1N2977B designation has historically been associated with Digitron Semiconductor. Confirm that the specific unit supplied matches the required electrical specifications and physical dimensions. Ensure compatibility with existing thermal management solutions due to the high power dissipation requirements inherent to this component class.

Selection Notes

Select this component when high power handling is required alongside precise voltage regulation. The DO-4 package necessitates specific mounting hardware and thermal interface materials. Evaluate the thermal resistance characteristics to ensure adequate heat sinking is implemented within the system design constraints.

Part Context

This device belongs to the family of high-power Zener diodes designed for industrial environments. It serves as a robust alternative to lower-power planar packages where higher current capacity and ruggedness are essential. The stud mount design facilitates direct attachment to chassis or heatsinks for efficient thermal management.