The thermal characteristics associated with BC 547 are provided along with typical values, in the table shown below. Moreover, the storage temperature, as well as operating temperature for the transistor BC 547, is also given in the table shown above. The current, power and voltage ratings of BC547 along with their values and System International (SI) units are provided in the table shown below. The polarity of voltages applied for each junction is shown in the figure below:. The voltage between the base and the emitter (VBE), is negative at the emitter and positive at the base terminal for its NPN construction. When the input voltage is applied at its Base terminal, some amount of current starts to flow from the base to the emitter and controls the current at the collector. At the border of the P and N, a depletion region is created, which blocks the flow of charge carriers from one region to another. As we know BC547 is an NPN transistor, so in its design, a P-region(Base) is sandwiched between two N-type regions. In the last section, we will design a Proteus Simulation of BC547, which will give you a better understanding of How to use these pins of BC547. The properly labeled pin configuration diagram of BC 547 along with its animation is shown in the figure given below. All of these three pins along with their symbols are shown in the below table:. BC547 Pinout consists of 3 pins in total, named: Collector(C), Base(B) and Emitter(E). Now, let's have a look at the pinout of BC547:. You can download BC547 Datasheet by clicking the below button:. If you want to get in-depth knowledge about any electronic component, then you should read its datasheet. Now let's have a look at the datasheet of BC547:. The maximum Collector current limit of BC547 is 110mA, so the load must be lower than that. 
In Forward Biased State, the current will start flowing from Collector to Emitter. If a HIGH signal(normally 5V) is provided at the Base Terminal, Collector and Emitter will start acting as a closed switch and the transistor is said to be acting as Forward Biased. In a Reverse Biased State, no current will flow through the transistor. If Base Terminal is connected to the Ground(0V), Collector and Emitter will act as an open switch and the transistor is said to be acting as Reverse Biased. 
Depending on the voltage applied at Base Terminal, BC547 can operate in two states, named:.BC547 Pins(Terminals) from left to right are called:.BC547 is a 3-Terminal NPN Bipolar Junction Transistor(BJT), mostly used for switching purposes and current amplification.So, let's have a detailed overview of BC 547. It is an NPN bipolar junction transistor (BJT), mainly used for switching and current amplification. Today, I am going to give you a detailed Introduction to BC547. Hello everyone! I hope you all will be absolutely fine and having fun.
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