C557 TRANSISTOR PDF

BC Transistor Datasheet pdf, BC Equivalent. Parameters and Characteristics. C NTE Equvilent NTE PNP audio amplifier transistor. NTE Silicon PNP Transistor Audio Amplifier. Switch (Compl to NTEAP). NTE Data Sheet. PNP Epitaxial Silicon Transistor. Features. • Switching and Amplifier. • High- Voltage: BC, VCEO = V. • Low-Noise: BC, BC

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Current flows in through collector. Controls the biasing of transistor.

Current Drains out through emitter. Complete Technical Details can be found at the BC datasheet given at the end of this page.

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. BC has a gain value of tothis value determines the amplification capacity of the transistor.

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 transistir transistor.

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To bias a transistor we have to supply current to base pin, this current I B 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.

BC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

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. When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above.

As discussed a transistor will act as an Open switch during Forward Transixtor 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 transistro current should maximum of 5mA.

C557, PNP Silicon, Amplifier Transistor, TO-92

Anything more than 5mA will kill the Transistor; hence a resistor is always added in series with base pin. The value of this resistor R B can be calculated using below formulae.

The value of I B should not exceed mA. A Transistors acts as an Amplifier when operating in Active Region. It can amplify power, voltage and current at different configurations. Of the above types common emitter type is the popular and mostly used configuration. When uses as tranwistor Amplifier the DC current gain of the Transistor can be calculated by using the below formulae.

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If you are designing a PCD or Perf board with this component then the following picture from the BC Datasheet will be useful to know its package type and dimensions. Submitted by admin on 26 October 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. 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.

Amplifier modules like Audio amplifiers, signal Amplifier etc. TL — Programmable Reference Voltage.

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