Typical Bipolar Transistors

Typical Bipolar Transistors

 

• AC127

  Germanium audio output transistor - found in vintage radios, and in some more modern circuits where sensitivity to heat is required.

• BF318

  Silicon Video amplifier transistor uses a collector/emitter voltage (V_CE) of about 150V and will amplify frequencies up to 80MHz

• BU208A

  Silicon output transistor used in TVs and large screen monitors. Can deliver high power and withstand pulse V_CE voltages of about 1000V. The metal case (normally bolted to a heat sink) is the collector connection.

• BD124

  Silicon TV output transistor with a lower power rating.

• BC108

  General purpose Silicon voltage amplifier transistor, the silver case with a small tab to identify the emitter connection is a standard TO39 package.

• BD 131

  Silicon audio NPN output transistor in a TO26 package for mounting on a suitable heat sink, will dissipate 15W and is often used as part of a push-pull pair with a matched BD132 PNP transistor.