The 2SK4003 is an N-channel MOS field-effect transistor manufactured by Toshiba. It is designed for power switching applications requiring low on-resistance and fast switching speeds. This transistor is often used in DC-DC converters, motor control circuits, and other power management systems.

Applications

• DC-DC Converters
• AC Adapters
• Motor Control Circuits
• Power Management in portable devices
• Switching regulators

Features

• N-Channel MOSFET
• Low On-Resistance (R_DS(on))
• High-Speed Switching
• Enhancement Mode
• Avalanche Capability

Benefits

• Improved energy efficiency due to low R_DS(on)
• Faster response times in switching applications
• Simplified drive circuitry
• Enhanced reliability under inductive loads
• Compact design for space-constrained applications

Specifications

The 2SK4003 is characterized by its drain-source voltage (V_DSS), which specifies the maximum voltage the transistor can handle between its drain and source terminals, and its gate-source voltage (V_GSS), which dictates the maximum voltage allowable between the gate and source. The continuous drain current (I_D) defines the amount of current the transistor can handle continuously, while the pulsed drain current (I_DP) specifies the maximum current it can handle for short durations. The power dissipation (P_D) specifies the maximum power that the transistor can dissipate under specified conditions. The low gate charge (Qg) enables fast switching speeds. The device’s thermal resistance is critical for heat management, ensuring proper operation at higher power levels.