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).

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Description Prix 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
N° de stock RS 436-7953
Référence fabricantBC847,215
MarqueNexperia
0,102 €
Each (In a Pack of 50)
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NPN 100 mA 45 V SOT-23 (TO-236AB) Surface Mount 250 mW 110 Single 50 V 6 V 100 MHz 3 1 -
N° de stock RS 178-7142
Référence fabricantBC847,215
MarqueNexperia
0,019 €
Each (On a Reel of 3000)
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N° de stock RS 170-8059
Référence fabricantBC847,235
MarqueNexperia
0,016 €
Each (On a Reel of 10000)
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NPN 100 mA 45 V TO-236 Surface Mount 250 mW 110 Single 50 V 6 V - 3 1 AEC-Q101
N° de stock RS 803-1083
Référence fabricantBC547BBU
0,064 €
Each (In a Pack of 200)
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NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
N° de stock RS 166-2988
Référence fabricantBC547B
0,054 €
Each (In a Bag of 10000)
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NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
N° de stock RS 761-9828
Référence fabricantBC547B
0,235 €
Each (In a Pack of 50)
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NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 300 MHz 3 1 -
N° de stock RS 178-7163
Référence fabricantBC857,215
MarqueNexperia
0,023 €
Each (On a Reel of 3000)
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PNP 100 mA 45 V SOT-23 (TO-236AB) Surface Mount 250 mW 125 Single 50 V 5 V 100 MHz 3 1 -
N° de stock RS 484-5100
Référence fabricantBC857,215
MarqueNexperia
0,103 €
Each (In a Pack of 50)
Unité
PNP 100 mA 45 V SOT-23 (TO-236AB) Surface Mount 250 mW 125 Single 50 V 5 V 100 MHz 3 1 -
N° de stock RS 806-4490
Référence fabricantKSC2334YTU
0,818 €
Each (In a Pack of 10)
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NPN 7 A 100 V TO-220 Through Hole 40 W 20 Single 150 V 7 V - 3 1 -
N° de stock RS 166-2168
Référence fabricantKSC2334YTU
0,744 €
Each (In a Tube of 50)
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NPN 7 A 100 V TO-220 Through Hole 40 W 20 Single 150 V 7 V - 3 1 -
N° de stock RS 545-2210
Référence fabricant2N3055G
5,15 €
Each
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NPN 15 A 60 V TO-204 Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 3 1 -
N° de stock RS 103-2964
Référence fabricant2N3055G
3,795 €
Each (In a Tray of 100)
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NPN 15 A 60 V TO-204AA Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 2 1 -
N° de stock RS 739-0381
Référence fabricantPN2222ATA
0,232 €
Each (In a Pack of 10)
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NPN 1 A 40 V TO-92 Through Hole 625 mW 35 Single 75 V 6 V 300 MHz 3 1 -
N° de stock RS 145-5383
Référence fabricantPN2222ATA
0,032 €
Each (On a Tape of 2000)
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NPN 1 A 40 V TO-92 Through Hole 625 mW 35 Single 75 V 6 V 300 MHz 3 1 -
N° de stock RS 314-1823
Référence fabricantBD139
2,22 €
Each
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NPN 3 A 80 V SOT-32 Through Hole 1.25 W 25 Single 80 V 5 V - 3 1 -
N° de stock RS 168-6075
Référence fabricantBD139
0,455 €
Each (In a Tube of 50)
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NPN 3 A 80 V SOT-32 Through Hole 1.25 W 25 Single 80 V 5 V - 3 1 -
N° de stock RS 124-1348
Référence fabricantBC557BTA
0,03 €
Each (On a Reel of 2000)
Unité
PNP 100 mA 45 V TO-92 Through Hole 500 mW 110 Single -50 V -5 V 150 MHz 3 1 -
N° de stock RS 803-1138
Référence fabricantBC557BTF
0,067 €
Each (In a Pack of 200)
Unité
PNP 100 mA 45 V TO-92 Through Hole 500 mW 110 Single -50 V -5 V 10 MHz 3 1 -
N° de stock RS 761-3505
Référence fabricantBC557BTA
0,054 €
Each (In a Pack of 100)
Unité
PNP 100 mA 45 V TO-92 Through Hole 500 mW 110 Single -50 V -5 V 150 MHz 3 1 -
N° de stock RS 169-8620
Référence fabricantBC557BTF
0,032 €
Each (On a Reel of 2000)
Unité
PNP 100 mA 45 V TO-92 Through Hole 500 mW 110 Single -50 V -5 V 10 MHz 3 1 -