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NPN Transistors
Bipolar transistors are so named because their operation involves both electrons and holes. These two kinds of charge carriers are characteristic of the two kinds of doped semiconductor material; electrons are majority charge carriers in n-type semiconductors, whereas holes are majority charge carriers in p-type semiconductors. In contrast, unipolar transistors such as the field-effect transistors have only one kind of charge carrier.
Charge flow in a BJT is due to diffusion of charge carriers across a junction between two regions of different charge concentrations. The regions of a BJT are called emitter, collector, and base.
BJTs come in two types, or polarities, known as PNP and NPN based on the doping types of the three main terminal regions. An NPN transistor comprises two semiconductor junctions that share a thin p-doped anode region, and a PNP transistor comprises two semiconductor junctions that share a thin n-doped cathode region
BC548B TO92 30v 0.5A 100mA 200Mhz NPN Transistor
..
R2.00
Ex Vat: R1.74
Ex Vat: R1.74
BC549B TO92 30v 0.5A 100mA Low Noise 200Mhz NPN Transistor
..
R12.50
Ex Vat: R10.87
Ex Vat: R10.87
BC639 TO92 100v 1A NPN Transistor (complementary BC640)
..
R5.00
Ex Vat: R4.35
Ex Vat: R4.35
BC846B Signal Transistor Surface Mount 80V 100mA SOT-23
Ideally Suited for Automatic Insertion..
R2.00
Ex Vat: R1.74
Ex Vat: R1.74
BD139 T0126 80v 1.5A NPN
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R4.00
Ex Vat: R3.48
Ex Vat: R3.48
BD237 T0126 100v 2A 3Mhz NPN (NS)
..
R4.90
Ex Vat: R4.26
Ex Vat: R4.26
BF422 TO092 250v 50mA High Voltage Transistor NPN
..
R1.00
Ex Vat: R0.87
Ex Vat: R0.87
BU426A BU426 TO3P 400v 6A TO3P Transistor
..
R30.16
Ex Vat: R26.23
Ex Vat: R26.23
BUW11A TO3P 1000v 5A TO3P
..
R40.25
Ex Vat: R35.00
Ex Vat: R35.00
CA3046 General Purpose NPN Transistor DIP 14 Pin
..
R19.90
Ex Vat: R17.30
Ex Vat: R17.30
F3NK80Z N-channel 800 V, 3.8 Ω, 2.5 A, TO-220FP,
..
R50.00
Ex Vat: R43.48
Ex Vat: R43.48
FMH23N50E FMH23N50 23N50E N Channel Power Mosfet TO-247
..
R45.50
Ex Vat: R39.57
Ex Vat: R39.57
K50T60 50A 600V IGBT NPN IKW50N60T
..
R60.00
Ex Vat: R52.17
Ex Vat: R52.17
KSP13 TO92 30v 0.5A NPN
..
R2.00
Ex Vat: R1.74
Ex Vat: R1.74
MJ11016G TO3 120V 30A NPN transistor
..
R94.50
Ex Vat: R82.17
Ex Vat: R82.17
MJ15003 TO3 140v 20A NPN
The MJ15003 is a power base power transistor designed for high power aud..
R49.90
Ex Vat: R43.39
Ex Vat: R43.39
MJE13001 E13001 0.2A 600V Triode Transistor TO92
..
R2.90
Ex Vat: R2.52
Ex Vat: R2.52
MJE15034 NPN 4A 350V TO220AB Transistor (complementary MJE15035)
..
R40.00
Ex Vat: R34.78
Ex Vat: R34.78
MJE3055T TO220 60V 10A 2Mhz Transistor
The MJE3055T is a silicon Epitaxial-Base NPN transistor.
..
R15.00
Ex Vat: R13.04
Ex Vat: R13.04
MN2488 TO03 NPN Transistor (complementary MP1620)
..
R70.00
Ex Vat: R60.87
Ex Vat: R60.87
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