BC817 Bipolar Transistor

Bipolar Transistors are a solid state, three-pin devices made from three layers of silicon. A bipolar transistor is designed to amplify current, bipolar transistors can also function as a switch. The type of transistor is NPN (negative positive-negative).

How do bipolar transistors work?

Bipolar transistors have two possible functions, switching, and amplification. Due to the device's three layers of doped semiconductor material, supplying the transistor with a signal voltage enables the discrete component to act as an insulator or a conductor. This clever change provides the transistors with two basic functions, switching (digital) electronics or amplification (analog) electronics.

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