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

BU941RP is High-performance NPN power transistor 400V 15A 155W in SOT-199 package, ideal for motor drivers, power amplifiers, and switching circuits.

85.00 EGP

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SKU:3496300094332
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

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