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BJT & Bipolar Transistors
A Bipolar Transistor or BJT (Bipolar Junction Transistor) is a solid state, three-pin device made from three layers of silicon. A BJT is designed to amplify current, bipolar transistors can also function as a switch. There are two main types of transistor, PNP (positive negative positive) or NPN (negative positive negative).How a Bipolar transistor is madeA bipolar transistor is made by joining two signal diodes back to back creating two PN junctions connected in series, sharing a common P or N terminal. By nature, silicon does not normally conduct electricity well. However, when silicon is treated with certain chemicals or impurities we can make the material and electrons behave in a different way. This process is called doping. The doping process improves the semiconductors ability to conduct electricity.What does a bipolar transistor do?As we said before a bipolar transistor has two possible functions, switching, and amplification. Due to the devices 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.Types of transistorTransistors are available in panel, surface and through hole mounting options in plastic package or metal can versions. All have three terminals or pins, the Base, the Collector, and the Emitter.Where are bipolar transistors used?Transistors are one of the most widely used discrete components in electronic designs and circuits. Transistors are used for the amplification of all types of electrical signals in circuits made up of individual components rather than ICs (integrated circuits).
Showing 1–24 of 81 results
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Infineon BC817K40WH6327XTSA1 NPN Transistor, 500 mA, 45 V, 3-Pin SOT-323
VND141,565.12Pack (1 Pack of 100) -
Infineon BDP949 NPN Transistor, 3 A, 60 V, 3 + Tab-Pin SOT-223
VND85,306.34Pack (1 Pack of 5) -
Infineon BFR106E6327HTSA1 NPN Transistor, 210 mA, 16 V, 3-Pin SOT-23
VND362,259.80Pack (1 Pack of 50) -
Infineon SMBTA92E6327HTSA1 PNP Transistor, 500 mA, 300 V, 3-Pin SOT-23
VND66,275.18Pack (1 Pack of 10) -
ON Semi 2N3055AG NPN Transistor, 15 A, 60 V, 2-Pin TO-204AA
VND148,075.78 -
ON Semi 2N3055G NPN Transistor, 15 A, 60 V, 3-Pin TO-204
VND148,743.54 -
ON Semi 2N3772G NPN Transistor, 20 A, 50 V, 2-Pin TO-204AA
VND145,571.68 -
ON Semi 2N3773G NPN Transistor, 16 A, 140 V, 3-Pin TO-204
VND138,059.38 -
ON Semi 2N3904BU NPN Transistor, 200 mA, 40 V, 3-Pin TO-92
VND166,940.00Pack (1 Pack of 50) -
ON Semi 2N3906BU PNP Transistor, 200 mA, 40 V, 3-Pin TO-92
VND35,558.22Pack (1 Pack of 10) -
ON Semi 2N4401BU NPN Transistor, 600 mA, 40 V, 3-Pin TO-92
VND52,919.98Pack (1 Pack of 10) -
ON Semi 2N4403TA PNP Transistor, 600 mA, 40 V, 3-Pin TO-92
VND51,083.64Pack (1 Pack of 10) -
ON Semi 2N4403TFR PNP Transistor, 600 mA, 40 V, 3-Pin TO-92
VND345,565.80Pack (1 Pack of 200) -
ON Semi 2N4920G PNP Transistor, 1 A, 80 V, 3-Pin TO-225
VND61,767.80Pack (1 Pack of 5) -
ON Semi 2N5684G PNP Transistor, 50 A, 80 V, 2-Pin TO-204
VND370,439.86 -
ON Semi 2N6488G NPN Transistor, 15 A, 80 V, 3-Pin TO-220AB
VND18,363.40 -
ON Semi 2SA1943OTU PNP Transistor, 17 A, 250 V, 3-Pin TO-264
VND445,729.80Pack (1 Pack of 5) -
ON Semi 2SC5200OTU NPN Transistor, 17 A, 250 V, 3-Pin TO-264
VND431,539.90Pack (1 Pack of 5) -
ON Semi BC33725TFR NPN Transistor, 800 mA, 50 V, 3-Pin TO-92
VND400,155.18Pack (1 Pack of 200) -
ON Semi BC547B NPN Transistor, 100 mA, 45 V, 3-Pin TO-92
VND333,880.00Pack (1 Pack of 50) -
ON Semi BC817-25LT3G NPN Transistor, 500 mA, 45 V, 3-Pin SOT-23
VND82,802.24Pack (1 Pack of 25) -
ON Semi BC846BLT3G NPN Transistor, 100 mA, 65 V, 3-Pin SOT-23
VND106,507.72Pack (1 Pack of 50) -
ON Semi BC858CLT3G PNP Transistor, 100 mA, 30 V, 3-Pin SOT-23
VND47,744.84Pack (1 Pack of 25) -
ON Semi BD137G NPN Transistor, 1.5 A, 60 V, 3-Pin TO-225
VND16,360.12
