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 made
A 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 transistor
Transistors 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).

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Beskrivning Pris Transistor Type Maximum DC Collector Current Maximum Collector Emitter Voltage Package Type Mounting Type Maximum Power Dissipation Minimum DC Current Gain Transistor Configuration Maximum Collector Base Voltage Maximum Emitter Base Voltage Maximum Operating Frequency Pin Count Number of Elements per Chip Automotive Standard
RS-artikelnummer 791-7863
Tillv. art.nrSTR1550
VarumärkeSTMicroelectronics
3,009 kr
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NPN 500 mA 500 V SOT-23 Surface Mount 500 mW 10 Single 500 V 9 V - 3 1 -
RS-artikelnummer 165-6841
Tillv. art.nrSTR1550
VarumärkeSTMicroelectronics
1,013 kr
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NPN 500 mA 500 V SOT-23 Surface Mount 500 mW 10 Single 500 V 9 V - 3 1 -
RS-artikelnummer 168-6056
Tillv. art.nrTIP35C
VarumärkeSTMicroelectronics
15,272 kr
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NPN 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS-artikelnummer 251-3564
Tillv. art.nrTIP35C
VarumärkeSTMicroelectronics
23,58 kr
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NPN 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS-artikelnummer 251-3558
Tillv. art.nrTIP36C
VarumärkeSTMicroelectronics
18,612 kr
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PNP 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS-artikelnummer 168-6055
Tillv. art.nrTIP36C
VarumärkeSTMicroelectronics
15,607 kr
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PNP 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS-artikelnummer 669-7433
Tillv. art.nrZTX851
VarumärkeDiodesZetex
9,264 kr
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NPN 5 A 60 V E-Line Through Hole 1.2 W 25 Single 150 V 6 V 130 MHz 3 1 -
RS-artikelnummer 102-4118
Tillv. art.nrBUV48A
VarumärkeSTMicroelectronics
32,909 kr
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NPN 15 A 1000 V TO-247 Through Hole 125 W 8 Single 1000 V 7 V - 3 1 -
RS-artikelnummer 100-7571
Tillv. art.nrMJL3281AG
VarumärkeON Semiconductor
24,522 kr
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NPN 15 A 200 V TO-3BPL Through Hole 200 W 12 Single 230 V 7 V 30 MHz 3 1 -
RS-artikelnummer 124-1460
Tillv. art.nr2SC5200OTU
VarumärkeON Semiconductor
24,522 kr
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NPN 17 A 250 V TO-264 Through Hole 150 W 55 Single 250 V 5 V 30 MHz 3 1 -
RS-artikelnummer 714-6759
Tillv. art.nrBUV48A
VarumärkeSTMicroelectronics
38,05 kr
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NPN 15 A 1000 V TO-247 Through Hole 125 W 8 Single 1000 V 7 V - 3 1 -
RS-artikelnummer 486-4577
Tillv. art.nrMJE350
VarumärkeSTMicroelectronics
5,812 kr
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PNP 500 mA 300 V SOT-32 Through Hole 20.8 W 30 Single 300 V 3 V - 3 1 -
RS-artikelnummer 145-5556
Tillv. art.nrBC546BTA
VarumärkeON Semiconductor
0,334 kr
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NPN 100 mA 65 V TO-92 Through Hole 500 mW 110 Single 80 V 6 V 300 MHz 3 1 -
RS-artikelnummer 793-0951
Tillv. art.nrMPS2222ARLRAG
VarumärkeON Semiconductor
0,836 kr
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NPN 600 mA 40 V TO-92 Through Hole 625 mW 35 Single 75 V dc 6 V 100 MHz 3 1 -
RS-artikelnummer 463-105
Tillv. art.nrMJL3281AG
VarumärkeON Semiconductor
28,90 kr
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NPN 15 A 200 V TO-3BPL Through Hole 200 W 12 Single 230 V 7 V 30 MHz 3 1 -
RS-artikelnummer 166-3114
Tillv. art.nrBC546BTF
VarumärkeON Semiconductor
0,334 kr
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NPN 100 mA 65 V TO-92 Through Hole 500 mW 110 Single 80 V 6 V 1 MHz 3 1 -
RS-artikelnummer 903-4077
Tillv. art.nr2SC5200OTU
VarumärkeON Semiconductor
28,87 kr
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NPN 17 A 250 V TO-264 Through Hole 150 W 55 Single 250 V 5 V 30 MHz 3 1 -
RS-artikelnummer 803-1077
Tillv. art.nrBC546BTF
VarumärkeON Semiconductor
0,669 kr
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NPN 100 mA 65 V TO-92 Through Hole 500 mW 110 Single 80 V 6 V 1 MHz 3 1 -
RS-artikelnummer 761-9825
Tillv. art.nrBC546BTA
VarumärkeON Semiconductor
0,669 kr
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NPN 100 mA 65 V TO-92 Through Hole 500 mW 110 Single 80 V 6 V 300 MHz 3 1 -
RS-artikelnummer 168-6254
Tillv. art.nrMJE350
VarumärkeSTMicroelectronics
4,794 kr
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PNP 500 mA 300 V SOT-32 Through Hole 20.8 W 30 Single 300 V 3 V - 3 1 -
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