TIP35C

The TIP35C is a high-power NPN transistor manufactured by STMicroelectronics, designed for use in various applications such as audio amplifiers, power switching, and general-purpose amplification. It is part of the TIP series of transistors, which are known for their robustness and reliability in handling high current and voltage levels.

Key Features:

1. Type: NPN Bipolar Junction Transistor (BJT)
2. Package: Typically available in a TO-220 package, which provides good thermal performance and ease of mounting on heatsinks.
3. Maximum Collector-Emitter Voltage (Vce): The TIP35C can handle a maximum Vce of 60V, making it suitable for applications that require moderate voltage levels.
4. Maximum Collector Current (Ic): It has a maximum collector current rating of 15A, allowing it to drive high loads effectively.
5. Power Dissipation: The transistor can dissipate up to 115W, depending on the thermal management and heatsinking used in the application.
6. Current Gain (hFE): The TIP35C exhibits a current gain (hFE) ranging from 20 to 70 at a collector current of 4A, which is beneficial for amplification purposes.
7. Transition Frequency (fT): The transition frequency is typically around 3 MHz, indicating its performance in high-frequency applications.

Electrical Characteristics:

• Collector-Base Voltage (Vcb): 60V
• Emitter-Base Voltage (Veb): 5V
• Thermal Resistance (junction to case): Approximately 1.5°C/W, which is crucial for thermal management in high-power applications.

Applications:

• Audio Amplifiers: The TIP35C is often used in audio amplifier circuits due to its ability to handle high currents and provide good linearity.
• Power Switching: It can be utilized in power switching applications, such as relay drivers and motor control circuits.
• Linear Regulators: The transistor can be part of linear voltage regulator designs, providing stable output voltage under varying load conditions.

Thermal Considerations:

Due to its high power dissipation capability, proper thermal management is essential when using the TIP35C. It is recommended to use a heatsink to maintain the junction temperature within safe limits, especially in continuous operation scenarios.

Conclusion:

The TIP35C from STMicroelectronics is a versatile and reliable NPN transistor suitable for a wide range of high-power applications. Its robust specifications make it a popular choice among engineers and hobbyists for building efficient and effective electronic circuits.