Tag: Darlington pair

BD680 Pinout, Equivalent, Applications, Datasheet

Posted on October 20, 2025 | By Tronicspro | No comments

The BD680 is a high-gain PNP Darlington transistor in a TO-126 package, widely used in medium-power amplification and switching. This guide explains BD680 pinout, datasheet, working, and practical applications. Introduction to BD680 PNP Transistor The BD680 is a PNP Darlington power transistor designed for medium-power amplification and efficient switching applications. Known for its high current […]

BD679 Pinout, Equivalent, Applications, Datasheet

Posted on October 19, 2025 | By Tronicspro | No comments

The BD679 is a high-gain NPN Darlington transistor in a TO-126 package, used for medium-power switching and amplification. This article explains BD679 pinout, datasheet details, working principle, and key applications. Introduction to BD679 NPN Transistor The BD679 is a medium-power NPN Darlington transistor designed for high-gain amplification and efficient switching. It is widely used in […]

BD677 Pinout, Equivalent, Applications, Datasheet

Posted on October 19, 2025 | By Tronicspro | No comments

The BD677 is a high-gain NPN Darlington power transistor in a TO-126 package. This detailed guide explains the BD677 pinout, datasheet, working principle, and equivalents for audio, switching, and control applications. Introduction to BD677 NPN Transistor The BD677 is a high-gain NPN Darlington power transistor designed for medium-power amplification and switching. It is part of […]

BD678 Pinout, Equivalent, Applications, Datasheet

Posted on October 19, 2025 | By Tronicspro | No comments

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 […]