When flex circuit assembly ask "what is a PCB," "what does PCB stand for," or "what is a PCB board," they are generally referring to the level board that mechanically sustains and electrically links electronic parts. In electronics, the PCB full form is printed circuit board, and in day-to-day use, terms like PCB board, circuit board, PC board, and electronics PCB all point to the very same core idea: a split board that routes signals and power in between parts such as resistors, capacitors, incorporated ports, circuits, and sensors.