2SC4381

Single Bipolar Transistors Overview

The Sanken Electric 2SC4381 is a silicon NPN triple diffused planar transistor designed for TV vertical output, audio output driver, and general-purpose applications. It serves as the complement to the 2SA1667/1668 PNP types. Key electrical characteristics include a collector-emitter voltage (VCEO) of 150 V and a continuous collector current (IC) rating of 1 A at a case temperature of 25°C. The device features a minimum DC current gain (hFE) of 60 under specified conditions and a typical transition frequency (fT) of 15 MHz.

Single Bipolar Transistors Feature Summary

• Triple diffused planar silicon construction
• Complementary pairing with 2SA1667/1668 series
• High voltage capability suitable for vertical deflection circuits

Single Bipolar Transistors Applications

• TV vertical output stages
• Audio output drivers
• General purpose switching

Single Bipolar Transistors Procurement Notes

Verify the specific part number against official Sanken Electric documentation to ensure authenticity. Confirm that the component matches the FM20 (TO-220F) package dimensions and pinout configuration required by your circuit design. Cross-reference absolute maximum ratings and electrical characteristics with the latest datasheet versions before integration.

Single Bipolar Transistors Selection Notes

Select this component when a high-voltage NPN transistor with 150 V breakdown is required for vertical deflection or audio driving tasks. Ensure thermal management aligns with the 1 W power dissipation limit at 25°C case temperature. Consider the complementary 2SA1667/1668 for push-pull configurations requiring matched performance characteristics in similar operating environments.

Single Bipolar Transistors Part Context

This transistor belongs to Sanken Electric's lineup of discrete power devices intended for consumer electronics and audio equipment. It complements the 2SA1667/1668 PNP transistors, forming a matched pair for efficient class-B or AB amplifier stages and vertical deflection circuits in television sets and related display technologies.

Single Bipolar Transistors Replacement Considerations

Officially documented complementary parts include the 2SA1667 and 2SA1668 PNP transistors. Verify pin compatibility and thermal resistance values when substituting with other manufacturers' equivalents to ensure safe operation within the specified voltage and current limits.