2SC3974

Single Bipolar Transistors Overview

The Panasonic 2SC3974 is a silicon NPN triple diffusion planar power transistor designed for high breakdown voltage and high-speed switching applications. It features an EIAJ SC-92 (TOP-3F-A1) flange mount package, allowing installation to a heat sink with a single screw. The device supports a collector current of 7A and peak current of 15A, with a collector-emitter voltage rating of 500V and collector-base voltage of 800V. It offers a transition frequency of 20MHz and a maximum collector power dissipation of 80W at 25°C.

Single Bipolar Transistors Feature Summary

• High-speed switching capability with wide safe operation area
• High collector-base voltage rating for robust performance
• Satisfactory linearity of forward current transfer ratio hFE
• Full-pack package design enabling easy heat sink mounting

Single Bipolar Transistors Applications

• High breakdown voltage high-speed switching circuits
• General electronic equipment requiring power amplification
• Standard office and communications equipment
• Measuring instruments and household appliances

Single Bipolar Transistors Procurement Notes

Verify the specific lifecycle status before procurement, as this component may be classified under maintenance or discontinued types. Confirm that the application aligns with standard general electronic equipment usage, as special applications involving safety or life support require separate consultation. Ensure compliance with RoHS directives and verify the latest product standards are met at the time of purchase.

Single Bipolar Transistors Selection Notes

Select this component when high collector-base voltage and fast switching speeds are required in a single-screw mountable package. Consider the thermal resistance characteristics and safe operation area limits for the intended load conditions. Verify that the base drive requirements match the saturation voltage specifications for efficient switching performance.

Single Bipolar Transistors Part Context

This part belongs to the Panasonic Power Transistors series, specifically utilizing silicon NPN triple diffusion planar technology. It is categorized under high-voltage switching devices suitable for general-purpose industrial and consumer electronics. The TOP-3F-A1 package provides a standardized form factor for thermal management in power applications.

Single Bipolar Transistors Replacement Considerations

Consult official documentation for verified substitutes. No confirmed substitute part numbers are provided in the source material.

Single Bipolar Transistors FAQ

What is the maximum collector-base voltage rating?

The maximum collector-base voltage (VCBO) with the emitter open is rated at 800 V.

How is the package mounted to a heat sink?

The full-pack package allows installation to a heat sink using a single screw.

What is the transition frequency of the transistor?

The transition frequency (fT) is 20 MHz under conditions of VCE = 10 V, IC = 0.5 A, and f = 1 MHz.