The maximum operating temperature range for the BC547B is -55°C to 150°C.
Yes, the BC547B can be used as a switch, but it's not recommended for high-frequency switching applications due to its relatively low transition frequency (ft) of 150 MHz.
The choice of resistor values for the base circuit depends on the specific application and the desired current gain. A general rule of thumb is to choose a base resistor (Rb) that is 10-20 times the emitter resistor (Re) value.
The maximum collector current that the BC547B can handle is 100 mA.
Yes, the BC547B can be used in a linear amplifier circuit, but it's not the best choice due to its relatively low current gain (hFE) of 110-300. A higher gain transistor like the BC557B may be a better option.