BC557 PNP Transistor
BC557 PNP Transistor is a 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 the base pin. This is where a PNP transistor differs from an NPN transistor, a Logic state (blue colour) is used to toggle between Ground and Signal Voltage (Emitter-Base Voltage VBE)
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CompareBC557 PNP Transistor has a gain value of 110 to 800, this value determines the amplification capacity of the transistor. The Collector pin handles a maximum current of 100mA; loads exceeding this limit aren’t suitable. Biasing requires limiting base pin current (IB) to 5mA.
Features:
- Bi-Polar PNP Transistor
- DC Current Gain (hFE) is 300 maximum
- Continuous Collector current (IC) is 100mA
- Emitter Base Voltage (VBE) is 6V
- Base Current(IB) is 5mA maximum
- Available in To-92 Package
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