The BD678 is a high-gain PNP Darlington power transistor in a TO-126 package. This guide explains the BD678 pinout, datasheet, and working principle for amplifiers, regulators, and control circuits. Introduction to BD678 PNP Transistor The BD678 is a high-gain PNP Darlington power transistor designed for medium-power amplification and switching applications. It belongs to the BD67x […]
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