BU941RP NPN Power Transistor 400V 15A 155W SOT-199

Description

BU941RP NPN Power Transistor 400V 15A 155W SOT-199 The BU941RP NPN Power Transistor 400V 15A 155W SOT-199 is a high-performance silicon transistor designed for power switching and amplification applications. It features a high collector-emitter voltage of 400V and a collector current capacity of 15A, making it ideal for use in motor control, power supply circuits, and high-voltage switching systems. With a maximum power dissipation of 155W, this transistor ensures reliable operation under demanding conditions. Encased in a robust SOT-199 (ISOWATT218) package, the BU941RP offers excellent thermal performance and durability, suitable for industrial and consumer electronic applications requiring efficient and stable power handling. Features High voltage capability up to 400V for reliable high-power applications. High collector current of 15A ensures strong load-driving capacity. Maximum power dissipation of 155W for excellent thermal performance. Fast switching speed for efficient operation in switching circuits. Low saturation voltage (Vce(sat)) reduces power loss and heat generation. Isolated SOT-199 (ISOWATT218) package for improved heat dissipation and easy mounting. Suitable for motor drivers, power amplifiers, and SMPS (switch-mode power supplies). High reliability and long operational lifespan under demanding conditions. Pin Configuration Pin No. Pin Name Description 1 Base (B) Control terminal for transistor operation 2 Collector (C) Main current-carrying terminal (connected to case) 3 Emitter (E) Output terminal for current flow Specifications Parameter Value Unit Description Transistor Type NPN – (BJT) Bipolar junction power transistor Datasheet BU941RP Collector-Emitter Voltage (Vceo) 400 V Maximum voltage between collector and emitter Collector-Base Voltage (Vcbo) 400 V Maximum voltage between collector and base Emitter-Base Voltage (Vebo) 5 V Maximum voltage between emitter and base Collector Current (Ic) 15 A Maximum continuous collector current Power Dissipation (Ptot) 155 W Maximum power handling capability DC Current Gain (hFE) 8 – 40 – Current gain range at specified test conditions Collector-Emitter Saturation Voltage (Vce(sat)) 1.5 V at Ic = 8A, Ib = 1.6A Transition Frequency (fT) 4 MHz frequency response Operating Junction Temperature (Tj) -65 to +150 °C Safe operating temperature range Package Type SOT-199 (ISOWATT218) – Insulated power package for efficient heat dissipation Mechanical Dimensions Applications Switching power supplies (SMPS) and DC-DC converters. Motor control circuits and industrial drive systems. Audio power amplifiers and high-power output stages. Inverter and converter circuits for power management. Relay and solenoid drivers requiring high current capability. Lighting control and dimming systems for high-voltage LEDs. Uninterruptible power supplies (UPS) and backup systems.. General-purpose high-voltage switching in industrial electronics. Package Contents 1 x BU941RP NPN Power Transistor 400V 15A 155W SOT-199 Datasheet BU941RP

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