MMBT5401-7

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MMBT5401-7 is a small signal NPN bipolar junction transistor (BJT) suitable for general purpose amplifier and switch applications. The device type is single and it is ideal for low-voltage/low-power applications, such as audio and telephone preamps, motor control, battery-powered circuits, and instrumentation. This device consists of three regions – emitter, base, and collector. It is composed of N-type material in base, P-type material in emitter, and N-type material in collector regions. The NPN structure of the MMBT5401-7 allows for electrons to be emitted from the emitter region, pass into the base with relatively low resistance, and then transfer to the collector region. By controlling the current flow from the base, the voltage and current at the collector are also regulated.

The primary application of the MMBT5401-7 is as a general-purpose amplifier. In this role, it acts as an active component (i.e., it requires an input voltage) to increase the amplitude of an input signal. By varying the input voltage at the base, the output current and voltage can be varied to achieve the desired amplification. Additionally, the MMBT5401-7 can be used as a switch to control current flow from one circuit to another, allowing for greater control than a simple diode could provide. The MMBT5401-7 can also be used as level shifters, logic gates, power drivers, and current-limiting load drivers.

The MMBT5401-7 is a rugged and versatile device that has many benefits for users. The device’s small size allows for easy integration into existing circuits, while its low power consumption makes it suitable for portable and battery-powered applications. Furthermore, the device is lead free and RoHS-compliant, making it suitable for environmentally conscious projects. Additionally, the device’s high gain and wide voltage range make it suitable for a variety of applications.

The MMBT5401-7 has a wide range of operating conditions and can pass high voltages. The device is rated for continuous collector-emitter voltage up to 40V and a maximum collector current of 200 mA. It has an incidental peak-collector current rating up to 1.0 A and peak power ratings up to 1.2 W. The device can handle a maximum junction temperature up to 150 degrees Celsius. When it operates at DC, the device typically has a Forward Early Voltage of 6 V.

The working principle of the MMBT5401-7 is straightforward. When a small voltage is applied to the base, a small collector current flows. This collector current increases exponentially as the base voltage increases, depending on the gain of the device. So, by changing the voltage at the base terminal, the collector current can be easily regulated to obtain the desired amplification or switching action.

The MMBT5401-7 is a versatile device that is suitable for a variety of applications. It is an ideal solution for portable, low-voltage, and low-power projects, such as audio and telephone preamp, motor control, battery-powered circuits, and instrumentation. The device is also RoHS-compliant and lead free, making it an environmentally friendly choice. Its small size, high gain, wide voltage range, and low power consumption make it a great choice for a variety of applications.

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