The junction field effect transistor or JFET is a fundamental component in electronics that operates on the electric field control principle. It includes three terminals; gate (G), drain (D), and source (S). JFET is a voltage-controlled device compared to the Bipolar Junction Transistor (BJT). The current flow in JFET is because of the majority of charge carriers but the current flow in BJT is because of both majority and minority charge carriers. This article provides an overview of J310 JFET, … [Read more...]

The BC107 is an NPN small-signal BJT available in different variants like; BC107A, BC107B, & BC107C where each has slightly special specifications. The main variation between these three variants is their hFE (current gain) range. So, BC107A transistor hFE ranges from 110 to 220, BC107B transistor has 200 to 450 ranges and BC107C transistor has 420 to 800 ranges. Based on the requirements of your application, a suitable variant is selected. This transistor is well-known in various circuit … [Read more...]

The transistor is a three-terminal semiconductor electronic device, used as a switch or an amplifier. Generally, transistors can be available in either PNP/NPN polarity with different switching and power speed ratings. If a transistor handles >1 Amps of collector current, then it is considered generally as a power transistor. These transistors must have less output resistance to deliver huge load currents and good junction insulation to oppose high voltages. These transistors can also … [Read more...]

The 2N3904 transistor is a prevalent NPN type BJT (bipolar junction transistor), introduced in the year 1960 by Motorola. This transistor is commonly used as a general-purpose switch and an amplifier within electronic circuits. So it has become one of the most widely used transistors due to its low cost, availability & versatility. This transistor was manufactured by different semiconductor companies worldwide in a range of different packages & specifications like; Diodes Inc, ON … [Read more...]

The 2N4401 transistor is a through-hole component, manufactured by Multicomp Pro and is mainly designed for general-purpose amplifier and switching applications. This transistor belongs to the NPN family with a silicon planar epitaxial structure which provides simple integration into different electronic circuits. This transistor appears as a cornerstone within electronic design by delivering a potent blend of performance & versatility. Its specifications and applications will empower … [Read more...]

The 2N4402 is a general-purpose PNP-type transistor, where the N-doped semiconductor layer is sandwiched in between the two P-doped semiconductor layers. Generally, transistors are made up of germanium or silicon based on the chosen application. In the PNP 2N4402 transistor, two P-layers signify the emitter & collector terminals whereas N signifies the base terminal of the transistor correspondingly. This transistor works in such a way that the small current at the base terminal controls a … [Read more...]

MJE13007 is an NPN transistor and is made with silicon (Si) material. This transistor is mainly designed to be used wherever fall time is critical like; high−voltage and high-speed-based power switching inductive circuits. This transistor is mainly applicable for 115V & 220V switch−mode applications like; inverters, switching regulators, solenoid or relay drivers, deflection circuits & motor controls. This article provides brief information on an MJE13007 transistor like; pinout, … [Read more...]

BC327 is a bipolar junction transistor that falls under the PNP transistor family. This transistor is made with silicon material and is a current-controlled device. So this transistor includes three terminals where a small amount of current is produced at one terminal which is used for controlling a large amount of current at the other two terminals. This transistor includes three layers where one N-doped layer is arranged between two P-doped layers. Here, the p-doped layer is charged positively … [Read more...]

Small signal transistors come in both PNP & NPN forms which are used for amplifying low-level signals and also they can be used as a switch. These transistors mainly depend on the contact between two different kinds of semiconductors to amplify or switch electronic signals & power. The typical hFE values for these transistors range from 10 to 500 with the highest IC ratings ranging from 80 to 600mA. The maximum operating frequencies of these transistors range from 1 to 300 MHz. These … [Read more...]

The KST42 transistor was invented by an American semiconductor company namely “Fairchild Semiconductor International, Inc., located in San Jose, California. This company manufactures different transistors and integrated circuits. So, the KST42 transistor is a high-voltage transistor and it is ideal for lighting, battery charger, and power supply applications. This article gives an overview of the KST42 transistor, pin configuration, specifications, and applications. What is KST42 … [Read more...]