The 2SD428 is a silicon NPN epitaxial planar transistor manufactured by Toshiba Semiconductor and Storage. It is designed for high-power amplification and switching applications, delivering a robust solution for various electronic designs.

Applications:

• Audio power amplifiers in high-fidelity audio systems
• Switching regulators and power supplies for industrial equipment
• Motor control circuits in robotics and automation systems
• Inverters and converters in power electronics
• High-current switching circuits

Features:

• High Collector Current: Capable of handling collector currents up to 7A.
• High Collector-Emitter Voltage: Supports collector-emitter voltages up to 80V.
• Low Saturation Voltage: Ensures minimal power loss during operation.
• High Power Dissipation: Designed for applications requiring significant power handling.
• NPN Silicon Transistor: Standard NPN configuration for ease of integration.

Benefits:

• Enhanced Audio Quality: Provides clear and powerful audio amplification in high-end audio equipment.
• Efficient Power Conversion: Facilitates efficient switching and regulation in power supplies and converters.
• Reliable Motor Control: Enables precise and reliable control of motors in industrial applications.
• Improved Circuit Performance: Delivers stable and dependable performance in diverse power applications.
• Reduced Heat Generation: Low saturation voltage minimizes power dissipation and reduces heat.

Technical Specifications:

The 2SD428 features a collector-emitter voltage (VCEO) of 80V, a collector current (IC) of 7A, and a power dissipation (PC) of up to 80W (depending on the heatsinking and ambient temperature). Its saturation voltage is low, typically around 0.5V at high collector currents. It is typically housed in a TO-3 package. The operating and storage junction temperature range is -65 to +150 °C.

The 2SD428 transistor provides a reliable and efficient solution for high-power amplification and switching needs. Its robust design and optimized specifications make it a suitable choice for demanding electronic applications requiring high performance and durability.