BC558 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.
- Bi-Polar PNP Amplifier Transistor
- DC Current Gain (hFE) is 800 maximum
- Continuous Collector current (IC) is 100mA
- Peak Collector current (Ic) is 200mA
- Emitter Base Voltage (VBE) is 5V
- Base Current(IB) is 200mA peak