TIP31A Discrete Semiconductor Products

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TIP31A is a NPN bipolar junction transistor (BJT) manufactured and designed by STMicroelectronics Inc. It is a complementary power transistor with a power dissipation of 1.5 A and a voltage rating of 45 V. It operates in high-frequency switching applications. STMicroelectronics designed this transistor for use in audio amplifiers, switching regulators, motor control systems, industrial motors, electronic lighting systems, white goods and other industrial electronic applications.

TIP31A is suitable for low-voltage, medium-power applications and can be used as a general-purpose switching transistor. Its maximum collector dissipation is 1.5 A which makes it suitable as a switch in higher current applications. It has an emitter-base voltage rating of 3 V and a collector-emitter voltage rating of 45 V.

TIP31A consists of a NPN transistor that has its emitter, base and collector connected to a metal tab lead. It is packaged in a TO-220-3 metal tab package which provides good noise isolation and thermal resistance. The typical gain of this transistor is 80, making it suitable for use as a driver in high-frequency switching applications. It has an on-resistance of 200 ohms and a storage temperature range of -55 to +125 degrees Celsius.

TIP31A is designed for use in amplifier circuits, switching regulators, motor control circuits, power MOSFET switches and switching applications. It can be used in both AC and DC applications. TIP31A works with a voltage range of 4.5-45 V and a collector current of up to 1.5 A. The guaranteed minimum hfe is 80. It is designed for high-frequency switching applications and has a maximum switching frequency of 50 MHz.

The working principle of TIP31A is quite simple – it is a transistor whose base-emitter junction is forward-biased by the application of an input voltage. When the input voltage is below a certain level (Vbe), the transistor is in the OFF state. When a voltage level greater than Vbe is applied, the transistor enters the ON state and conducts current through the collector-emitter junction.

When the input voltage is greater than the Vbe, current begins to flow through the transistor, allowing it to act as a switch. The current is then amplified and passed through to the output device (usually a transistor or an LED). The gain of the transistor can be adjusted by changing the relative voltage levels on its base and emitter (collector).

TIP31A is a highly efficient and reliable transistor that is suitable for use in many different types of applications. Its performance is enhanced by its low-power dissipation and high-frequency switching capabilities. Additionally, the device is easy to use and can be used in a variety of circuits. Its simple construction and reliable performance make it an ideal choice for a variety of applications.

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