What Is a TIP35C Transistor?

What Is TIP35C?
1. The TIP35C is a high-power NPN bipolar junction transistor (BJT)
2. It features a high current handling capacity of up to 25A and a maximum collector-emitter voltage of 100V.
3. It also offers good gain characteristics, typically around 15-75.
4. It is used in audio and RF amplifiers that require high power handling.
5. The TIP35C is often used with its PNP counterpart, the TIP36C, to create push-pull amplifier configurations and other complementary circuits that require both NPN and PNP transistors.
Pinout of TIP35C
The TIP35C is a high-power NPN transistor housed in a TO-247 package. Its pinout consists of three main terminals:
Pin 1 - Base (B): This is the control pin where a small current or voltage applied allows current to flow between the collector and emitter.
Pin 2 - Collector (C): This pin is the primary current input/output terminal, where the majority of the current flows from the collector to the emitter when the transistor is turned on.
Pin 3 - Emitter (E): The emitter is the output terminal, and the current flows out of this pin when the transistor is conducting.
Circuits of TIP35C
When the base (B) receives a driving signal, it adjusts the base current to control the main current flow from the collector (C) to the emitter (E). In saturation mode, the TIP35C allows a large current to flow from the collector to the emitter, while in cutoff mode, the current is blocked.
In a typical power amplifier circuit, the input signal applies a small current to the base, which controls the large current between the collector and the emitter. This allows a small signal to be amplified into a larger power output. Since the collector is connected to a high voltage source, the current flows from the collector to the emitter, delivering power to the load.
Specification of TIP35C
Transistor Type: NPN
Collector-Emitter Voltage (Vce): 100V
Collector-Base Voltage (Vcb): 100V
Emitter-Base Voltage (Veb): 5V
Collector Current (Ic): 25A
Current - Collector Cutoff (Max): 1mA
Vce Saturation (Max) @ Ib, Ic: 4V @ 5A, 25A
DC Current Gain (hFE) (Min) @ Ic, Vce: 10 @ 15A, 4V
Frequency - Transition: 3MHz
Power Dissipation (Ptot): 125W
DC Current Gain (hFE): 20 - 50
Operating Junction Temperature (Tj): 150°C
Package: TO-247-3
Features of TIP35C
Internally frequency-compensated
Large DC voltage gain: 100 dB
Wide bandwidth (unity gain): 1.1 MHz (temperature compensated)
Very low supply current per operator essentially independent of supply voltage
Low input bias current: 20 nA (temperature compensated)
Low input offset voltage: 2 mV
Low input offset current: 2 nA
Input common-mode voltage range includes negative rails
Differential input voltage range equal to the power supply voltage
Large output voltage swing 0 V to (VCC+ -1.5 V)
Package of TIP35C
The TIP35C is packaged in a TO-247-3, which is a high-power, three-terminal package commonly used for transistors and power devices. It features a robust design that provides efficient heat dissipation, making it ideal for applications requiring high power and current handling. The package has three pins: the collector, base, and emitter, arranged to facilitate easy mounting on a heat sink for enhanced thermal performance.
Alternatives of TIP35C
Alternatives to the TIP35C include other high-power NPN transistors with similar specifications, such as the TIP35C SL, TIP35C-S, TIP35CP, TIP35CGT, IP35CW, 2N3055, MJ15024, and BD249C. These transistors are also designed for high-current, high-voltage applications and are commonly used in power amplifiers, motor control circuits, and switching power supplies.
Where to Use TIP35C?
The TIP35C is commonly used in high-power applications such as audio amplifiers, motor control circuits, and power supplies. Its ability to handle high current and voltage makes it suitable for use in environments requiring robust power output and efficient heat dissipation, like industrial motor drives, large audio systems, and other power regulation circuits. Additionally, it is often employed in switching and linear power supplies.
How to Select and Use TIP35C?
When selecting the TIP35C, first verify that its power specifications meet your application requirements, including the maximum collector current and collector-to-emitter voltage. Next, consider its heat dissipation requirements to ensure proper cooling. Additionally, make sure that the TIP35C's package type and pin configuration are compatible with your circuit design. Finally, evaluate factors such as switching frequency and environmental conditions based on your application's needs.
When using the TIP35C, install it into the TO-247-3 package socket on the circuit board. Then, solder the pins to the board. Connect the positive terminal of the power supply to the collector (C) of the TIP35C, and the negative terminal to the circuit ground. The base (B) should be connected to the control signal through an appropriate drive circuit. After powering on, use an oscilloscope or multimeter to check the TIP35C’s operational status and adjust the bias resistors or other components in the circuit based on the test results.
FAQs
How do I properly use the TIP35C in a circuit?
To use the TIP35C, install it in the TO-247-3 package socket, solder the pins to the circuit board, connect the collector to the positive power supply, the emitter to ground, and drive the base with a suitable control signal.
What are the common applications for the TIP35C?
The TIP35C is commonly used in power amplifiers, switching regulators, motor drives, and other high-power circuits. It is suitable for applications requiring significant power handling and stability.
What should I consider when selecting a TIP35C transistor?
When selecting the TIP35C, consider factors such as the maximum collector current and voltage ratings, power dissipation requirements, and thermal management needs.