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

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