On the circuit diagrams, the transistor is indicated both by a letter code and a conditional graphic. The letter code consists of the Latin letters VT and a number (serial number on the diagram). The conventional graphic designation of the П210A transistor is usually placed in a circle, symbolizing its case. A short dash with a line from the middle symbolizes the base, two oblique lines drawn to its edges at an angle of 60 ° – the emitter and collector. The emitter has an arrow pointing towards the base.
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