Does anyone still make an old BC108? I used them more than 40 years ago. They even have an old metal case. I've used BC547 or 2N3904 transistors for about the last 30 years.
How can you bias a transistor with a voltage source? The gain and Vbe varies all over the map for different samples and with temperature change. It might even be influenced by the fullness of the moonlight. :lol:
Transistors need negative feedback so that all circuits work with any sample of transistor. The negative feedback can be created by an emitter resistor, or a resistor from the collector to the base.
Siemens rates the gain as from 180 to 460, and their Vbe from 0.55V to 0.7V. If you choose a Q-point without negative feedback for one in the middle, then ones on each side won't work!
If you want a graph showing a "typical" transistor as a starting point, Siemens have it in their datasheet: