MMBT2907A-7

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Transistor Type:	PNP
Current - Collector (Ic) (Max):	600mA
Voltage - Collector Emitter Breakdown (Max):	60V
Vce Saturation (Max) @ Ib, Ic:	1.6V @ 50mA, 500mA
Current - Collector Cutoff (Max):	10nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 150mA, 10V
Power - Max:	300mW
Frequency - Transition:	200MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Base Part Number:	MMBT2907A

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MMBT2907A-7 Application Field and Working Principle

Understanding the properties of transistors is important for anyone wishing to repair or design electronic circuits. The MMBT2907A-7 is a widely used bipolar junction transistor (BJT), belonging to a widely used family of transistors called the small-signal transistors. Even though the maximum collector-emitter voltage rating of this device is just 30 volts, it is widely used in many applications due to its cost and reliability. In this article, we will discuss the MMBT2907A-7 application field and working principle.

Applications of the MMBT2907A-7

The MMBT2907A-7 is mainly used in receiver and amplifier circuits. Due to the limited transport time and comparably small capacitance of the transistor junction, it is especially useful in high-frequency applications such as radios, TV tuners, and high-frequency amplifier circuits.The MMBT2907A-7 is also used in low-power switching applications because of its low on-state resistance. It is used in switching power supplies, control circuits, inductive loads, and other applications.

Working Principle of the MMBT2907A-7

The MMBT2907A-7 is a bipolar junction transistor, which means it has three terminals: a base (B), a collector (C), and an emitter (E). The transistor acts like an electric valve. When the base voltage is small, the electric current is blocked, but when the voltage is increased, the current flows through the transistor, thus allowing the collector to be activated.At low voltages, the collector-emitter voltage is small and the collector-base voltage is much greater. This allows the base potential to be easily controlled by the input voltage, thus providing amplification. When the base current is increased, more collector current is allowed to flow through the emitter due to the forward biasing of the junction. This in turn causes an increase in the collector-emitter voltage.The MMBT2907A-7 has a high current gain, a low voltage drop, and a low on-state resistance. These features make it desirable for use in electronic circuits.

Conclusion

The MMBT2907A-7 is a widely used bipolar junction transistor that is used in a variety of applications. It has a high current gain, a low voltage drop, and a low on-state resistance, making it ideal for use in amplified circuits, switching power supplies, control circuits, and inductive loads. Understanding how the MMBT2907A-7 works can help you design better circuits and understand more complex electronic components.

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