BD648-S

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

A BD648-S is a single bipolar junction transistor (BJT) commonly used in audio circuits, power amplifiers, and other systems where power control is important. The BD648-S operates with a maximum collector-emitter voltage of 60V, and a collector current of 3A. Its maximum power dissipation is 40W at 25°C and its maximum gain is 120. It\'s a general-purpose single transistor, suitable for many applications.The BD648-S is constructed from three semiconductor layers, the base, collector and emitter. It works by controlling the amount of current flowing through the base-emitter junction, which controls the current flowing from the collector to the emitter. The voltage across the base-emitter junction determines the current amplification of the transistor; a larger voltage will produce a higher amplification, and a smaller voltage will produce a lower amplification.In an audio circuit, the BD648-S is often used as a pre-amplifier to boost the signal before it is fed into a power amplifier. When the signal is amplified, the collector current increases and the current flowing through the base-emitter junction will decrease, resulting in a decrease in the voltage across the base-emitter junction and a decrease in the current amplification of the transistor. This prevents an over-amplified signal from being fed into the power amplifier.In a power amplifier, the BD648-S is used to control the current flowing from the power supply to the load. When a signal is applied, the base voltage will be increased and the collector current will increase. This will increase the current flowing from the power supply to the load and the amplifier will produce more power. When the signal is removed, the collector current will decrease and the power supply will be disconnected from the load.The BD648-S can also be used in power supply circuits. The collector current is connected to the load, and the base voltage is connected to the power supply. The BD648-S can control the current flowing from the power supply to the load. When the voltage is increased, the collector current will increase and the power supply will be connected to the load. When the voltage is decreased, the current will decrease and the power supply will be disconnected from the load.The BD648-S is also commonly used in switching circuits. It can be used to switch a signal on and off, or to control the direction of current. The transistor can be used to switch an output current in either direction, depending on the base voltage. This can be used to control the speed of a motor, or to switch a signal on and off.By controlling the base voltage and the collector current, the BD648-S can be used in a variety of applications where power control is important. It has a maximum collector-emitter voltage of 60V, and a maximum power dissipation of 40W, making it an ideal choice for many applications. The BD648-S is an easy to use, reliable transistor and with its wide range of uses, it is an essential component in many power control circuits.

The specific data is subject to PDF, and the above content is for reference