Bipolar Transistors

Bipolar Transistors are a solid state, three-pin devices made from three layers of silicon. A bipolar transistor 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

Bipolar transistors are constructed 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.

How do bipolar transistors work?

Bipolar transistors have 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.

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.

They are also available as;

  • Digital transistors - are made of a semiconductor material, usually silicon, which conducts the current (or electricity) with little resistance. They also tend to have at least three terminals for easy connection to an external circuit.
  • UJT transistors - constructed of a bar of lightly dope N type silicone with a small piece of heavily doped P type material attached to one side. Since the silicon bar is lightly dope it has very high resistance.

Applications of bipolar transistors?

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 Transistor Configuration Maximum Collector Base Voltage Maximum Emitter Base Voltage Maximum Operating Frequency Pin Count Number of Elements per Chip Dimensions Minimum Operating Temperature
N° de stock RS 896-2625
Référence fabricant2SC2712-Y,LF(T
MarqueToshiba
0,067 €
Each (In a Pack of 50)
Unité
NPN 150 mA 50 V TO-236MOD Surface Mount 150 mW Single 60 V 5 V 80 MHz 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2682
Référence fabricant2SC5200-O(S1,F,S)
MarqueToshiba
2,388 €
Each (In a Pack of 5)
Unité
NPN 15 A 230 V TO-3PL Through Hole 150 W Single 230 V 5 V - 3 1 20.5 x 26 x 5.2mm -
N° de stock RS 890-2642
Référence fabricant2SC3326-A(TE85L,F)
MarqueToshiba
0,23 €
Each (In a Pack of 25)
Unité
NPN 300 mA 20 V SOT-346 (SC-59) Surface Mount 150 mW Single 50 V 25 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2689
Référence fabricant2SC5200N(S1,E,S)
MarqueToshiba
1,81 €
Each (In a Pack of 5)
Unité
NPN 15 A 230 V TO-3P Through Hole 150 W Single 230 V 5 V - 3 1 15.5 x 4.5 x 20mm -
N° de stock RS 890-2632
Référence fabricant2SC3138-Y(TE85L,F)
MarqueToshiba
0,91 €
Each (In a Pack of 25)
Unité
NPN 50 mA 200 V SC-59 Surface Mount 150 mW Single 200 V 5 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2636
Référence fabricant2SC3265-Y(TE85L,F)
MarqueToshiba
0,168 €
Each (In a Pack of 25)
Unité
NPN 800 mA 25 V SOT-346 (SC-59) Surface Mount 200 mW Single 30 V 5 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2670
Référence fabricant2SC4944-GR(TE85L,F
MarqueToshiba
0,187 €
Each (In a Pack of 50)
Unité
NPN 150 mA 50 V USV Surface Mount 200 mW Single 60 V 5 V - 5 1 2 x 1.25 x 0.9mm -
N° de stock RS 144-5316
Référence fabricantHN1C01FU-GR,LF(T
MarqueToshiba
0,067 €
Each (In a Pack of 100)
Unité
NPN 150 mA 50 V SOT-363 (SC-88) Surface Mount 200 mW - 60 V 5 V 80 MHz 6 2 2 x 1.25 x 0.9mm -
N° de stock RS 890-2608
Référence fabricant2SA1312-GR(TE85L,F
MarqueToshiba
0,198 €
Each (In a Pack of 25)
Unité
PNP 100 mA 120 V SOT-346 (SC-59) Surface Mount 150 mW Single -120 V -5 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 760-3117
Référence fabricant2SA1943-O(Q)
MarqueToshiba
2,50 €
Each
Unité
PNP 15 A 230 V TO-3PL Through Hole 150 W Single -230 V -5 V 30 MHz 3 1 20.5 x 5.2 x 26mm -
N° de stock RS 144-5330
Référence fabricantRN1401,LF(T
MarqueToshiba
0,04 €
Each (In a Pack of 200)
Unité
NPN - 50 V SOT-23 (TO-236) Surface Mount 200 mW Single - 10 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 168-7405
Référence fabricant2SA1943-O(Q)
MarqueToshiba
1,687 €
Each (In a Tube of 100)
Unité
PNP 15 A 230 V TO-3PL Through Hole 150 W Single -230 V -5 V 30 MHz 3 1 20.5 x 5.2 x 26mm -
N° de stock RS 144-5206
Référence fabricantRN1423(TE85L,F)
MarqueToshiba
0,202 €
Each (In a Pack of 20)
Unité
NPN - 50 V SOT-23 (TO-236) Surface Mount 200 mW Single - 10 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2648
Référence fabricant2SC3324-GR(TE85L,F
MarqueToshiba
0,202 €
Each (In a Pack of 25)
Unité
NPN 100 mA 120 V SOT-346 (SC-59) Surface Mount 150 mW Single 120 V 120 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 144-5242
Référence fabricantTTA1452B,S4X(S
MarqueToshiba
1,21 €
Each (In a Pack of 5)
Unité
PNP 12 A 80 V TO-220SIS Through Hole 30 W Single -80 V -6 V 50 MHz 3 1 10 x 4.5 x 15mm -
N° de stock RS 890-2620
Référence fabricant2SA1943N(S1,E,S)
MarqueToshiba
2,01 €
Each (In a Pack of 5)
Unité
PNP 15 A 230 V TO-3P Through Hole 150 W Single -230 V -5 V - 3 1 15.5 x 4.5 x 20mm -
N° de stock RS 896-2616
Référence fabricant2SA1162-GR,LF(T
MarqueToshiba
0,067 €
Each (In a Pack of 50)
Unité
PNP 150 mA 50 V TO-236MOD Surface Mount 150 mW Single -50 V -5 V 80 MHz 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2604
Référence fabricant2SA1312-BL(TE85L,F
MarqueToshiba
0,183 €
Each (In a Pack of 25)
Unité
PNP 100 mA 120 V SOT-346 (SC-59) Surface Mount 150 mW Single -120 V -5 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 890-2617
Référence fabricant2SA1362-GR,LF(T
MarqueToshiba
0,202 €
Each (In a Pack of 25)
Unité
PNP 800 mA 15 V SOT-346 (SC-59) Surface Mount 200 mW Single -15 V -5 V - 3 1 2.9 x 1.5 x 1.1mm -
N° de stock RS 896-6737
Référence fabricant2SC4738-GR,LF(T
MarqueToshiba
0,067 €
Each (In a Pack of 200)
Unité
NPN 150 mA 50 V 2-2H1A Surface Mount 100 mW Single 60 V 5 V 80 MHz 3 1 1.6 x 0.8 x 0.7mm -