Motorola TIP50 NPN Power Transistor The Motorola TIP50 is a high-voltage NPN silicon power transistor designed for applications requiring substantial voltage handling and reliable performance. Encased in the standard TO-220 package, it is well-suited for line-operated audio output amplifiers, switch-mode power supply drivers, and various switching applications. Key Features High Voltage Capability: With a collector-emitter sustaining voltage (V CEO ) of 400V and a collector-base voltage (V CBO ) of 500V, the TIP50 is ideal for high-voltage applications. Current Handling: Supports a continuous collector current (I C ) of 1A and a peak collector current of 2A, accommodating moderate current requirements. Power Dissipation: Capable of dissipating up to 40W of power at a case temperature of 25°C, ensuring efficient thermal management. Frequency Response: Offers a transition frequency (f T ) of 10 MHz, suitable for high-speed switching operations. DC Current Gain: Provides a DC current gain (h FE ) ranging from 30 to 150 at a collector current of 0.3A, ensuring effective amplification. Applications Audio Amplifiers: Utilized in line-operated audio output stages, delivering high-voltage performance. Switch-Mode Power Supplies: Functions as a driver in switch-mode power supply circuits, facilitating efficient power conversion. General Switching Applications: Suitable for various high-voltage switching tasks in industrial and consumer electronics. Package and Thermal Characteristics The TIP50 is housed in a TO-220 package, featuring a metal tab for efficient heat dissipation. Thermal resistance from junction to case (R ?JC ) is rated at 3.125°C/W, and from junction to ambient (R ?JA ) at 62.5°C/W, ensuring reliable operation under thermal stress. Absolute Maximum Ratings Collector-Emitter Voltage (V CEO ): 400V Collector-Base Voltage (V CBO ): 500V Emitter-Base Voltage (V EBO ): 5V Continuous Collector Current (I C ): 1A Peak Collector Current (I CM ): 2A Base Current (I B ): 0.6A Operating Junction Temperature (T j ): -65°C to +150°C The Motorola TIP50 NPN Power Transistor combines high-voltage capability with robust current handling and thermal performance, making it a versatile component for various high-voltage applications.