C557B TRANSISTOR DATASHEET PDF

The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor. To bias a transistor we have to supply current to base pin, this current IB should be limited to 5mA. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV. BC Transistor as switch When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above.

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Tojakora BC Hoja de especificaciones. If you are designing a PCD or Perf board with this component then the following picture from the BC Datasheet will be transistr to know its package type and dimensions. Current flows in through collector. A Transistors acts as an Amplifier when operating in Active Region. The value of this resistor R B can be calculated using below formulae. Current Drains out through emitter. The value of I B should not exceed mA. Controls the biasing of transistor.

BC is a PNP transistor hence the collector and emitter will be closed Forward biased when the base pin is held at ground and will be opened Reverse biased when a signal is provided to base pin. TL — Programmable Reference Voltage. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. The trasistor amount of current that could flow through the Collector pin teansistor mA, hence we cannot connect loads that consume more than mA using this transistor.

Submitted by admin on 26 October When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV. Complete Technical Details can be found at the BC datasheet given at the end cb this page. Some of the configurations used in amplifier circuits are Common emitter amplifier Common collector amplifier Common base amplifier Of the above types common emitter type is the popular and mostly used configuration.

As discussed a transistor will act as trsnsistor Open switch during Forward Bias and as a Closed switch during Reverse Bias, this biasing can be achieved by supplying the required amount of current to the base pin. As mentioned the biasing current should maximum of 5mA. To bias a transistor we have ccb supply current to base pin, this current I B should be limited to 5mA.

When uses as an Amplifier the DC current gain of the Transistor can be calculated by using the below formulae. BC has a gain value of tothis value determines the amplification capacity of the transistor.

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