BC309BTA

Series:	--
Packaging:	Tape & Box (TB)
Part Status:	Obsolete
Transistor Type:	PNP
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	25V
Vce Saturation (Max) @ Ib, Ic:	500mV @ 5mA, 100mA
Current - Collector Cutoff (Max):	15nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	180 @ 2mA, 5V
Power - Max:	500mW
Frequency - Transition:	130MHz
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Supplier Device Package:	TO-92-3
Base Part Number:	BC309

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BC309BTA is a type of single bipolar junction transistor (BJT). It belongs to the group of transistors known as NPN transistors and is used for general-purpose switching and amplification. The BC309BTA is produced by various semiconductor manufacturers, such as Philips Semiconductor, Siemens Semiconductor, and NXP Semiconductor.The BC309BTA is a general-purpose NPN silicon transistor that is commonly used for switching applications. It can handle a maximum power dissipation of 500 milliwatts and a maximum collector-emitter current of 1 ampere. The transistor features an amplification factor of 100 and a maximum voltage of 40 volts. The BC309BTA has a collector-emitter saturation voltage (VCE) of 0.55 volts and an emitter-base saturation voltage (VEB) of 1.0 volts. The transistor is also characterized by a high transition frequency, a low noise figure, and a medium gain bandwidth product.The BC309BTA is used in a variety of applications, such as switching circuits, audio amplifiers, and signal amplification. It is also commonly used in battery-operated devices such as radios, toys, and alarms.The working principle of the BC309BTA is based on the fact that when current is applied to the base, it creates an "on" state in the transistor. The current flows between the collector and the emitter when the gate is turned on. This is known as BJT switch mode. When the gate is turned off, the current between the collector and the emitter stops, which turns the transistor into the "off" state.The operating parameters of the BC309BTA are temperature dependent. When the temperature increases, the base current will decrease, causing the gain to decrease. To ensure the proper functioning of the BC309BTA, it is important to choose components carefully to make sure that they are compatible with the BC309BTA’s operating parameters.The BC309BTA is available in three packages: a TO-92 package, a wide leaded package, and a plastic leaded chip carrier (PLCC) package. The TO-92 package is the most common and is used in most applications. It is a three-pin package with pins that are normally connected with an integrated circuit (IC) for further amplification or switching. The wide leaded package is suitable for automated assembly and is also used in high-power circuits. The PLCC package is less common and is used in more specialized applications.In conclusion, the BC309BTA is a popular NPN silicon transistor that is widely used in switching and amplification applications. Its low noise figure, high transition frequency, and medium gain bandwidth product make it well suited for a variety of applications. To ensure proper functioning, it is important to choose components that are compatible with the transistor’s operating parameters.

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