I am wondering, why is there no complementary transistor pairs to buy, since their use as individual devices is pretty common in audio amplifier applications.
So for complementary transistor pair it is desired to have as identical properties as possible (gain, bandwidth, breakdown voltages, etc.) - it is hard for an amateur like me to find two very closely identical transistors (one pnp and other npn; for BJT lets say).
- Are there any (power) complementary transistors available in any electronics shop? If there are any, example of them would be great!
- If there are no such transistors in one package sealed together, why is there no one manufacturing such components?
One more thing. I have recently bought a lot of cheap npn and pnp transistors of same model (npn->BC337 & pnp->BC327). I have found two almost identical transistor, as the thing concerns of the gain which is approx. 320 for both. Sadly transistors are low power and cannot be used in power amplifier in the driver stage, where currents get amplified to greater levels (1 amp and above).
I kind of modified these two transistor so I can use it (two pieces in one) on the breadboard - if one starts heating, the other also starts heating for the same portion; making them work in as identical conditions as possible.
- What do you think of this "modified version" of two transistors as one transistor? Bad, dumb, nothing special, awesome?