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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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 Maximum Base Emitter Saturation Voltage
N° de stock RS 896-2625
Référence fabricant2SC2712-Y,LF(T
MarqueToshiba
0,039 €
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
2,262 €
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 890-2689
Référence fabricant2SC5200N(S1,E,S)
MarqueToshiba
1,772 €
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 890-2642
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 890-2632
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 0.75 V
N° de stock RS 890-2670
Référence fabricant2SC4944-GR(TE85L,F
MarqueToshiba
0,216 €
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 890-2636
Référence fabricant2SC3265-Y(TE85L,F)
MarqueToshiba
0,097 €
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 144-5302
Référence fabricantHN1A01FU-GR,LF(T
MarqueToshiba
0,068 €
Each (In a Pack of 100)
Unité
PNP 150 mA 50 V SOT-363 (SC-88) Surface Mount 200 mW - -50 V -5 V 80 MHz 6 2 2 x 1.25 x 0.9mm -
N° de stock RS 890-2620
Référence fabricant2SA1943N(S1,E,S)
MarqueToshiba
1,966 €
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 890-2676
Référence fabricant2SC4738-GR(T5L,F,T
MarqueToshiba
0,13 €
Each (In a Pack of 50)
Unité
NPN 150 mA 50 V SSM Surface Mount 100 mW Single 60 V 5 V - 3 1 1.6 x 0.8 x 0.7mm -
N° de stock RS 890-2591
Référence fabricant2SA1244-Y(T6L1,NQ)
MarqueToshiba
0,878 €
Each (In a Pack of 10)
Unité
PNP 5 A 50 V DPAK (TO-252) Surface Mount 20 W Single -60 V -5 V - 3 1 6.5 x 2.3 x 7mm -1.2 V
N° de stock RS 896-2656
Référence fabricantTTC5200(Q)
MarqueToshiba
2,175 €
Each (In a Pack of 2)
Unité
NPN 15 A 230 V 2-21F1A Through Hole 150 W Single 230 V 5 V 30 MHz 3 1 20.5 x 5.2 x 26mm -
N° de stock RS 890-2608
Référence fabricant2SA1312-GR(TE85L,F
MarqueToshiba
0,211 €
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 890-2658
Référence fabricant2SC4117-GR(TE85L,F
MarqueToshiba
0,122 €
Each (In a Pack of 25)
Unité
NPN 100 mA 120 V SOT-323 (SC-70) Surface Mount 100 mW Single 120 V 5 V - 3 1 2 x 1.25 x 0.9mm -
N° de stock RS 896-2616
Référence fabricant2SA1162-GR,LF(T
MarqueToshiba
0,039 €
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 896-6737
Référence fabricant2SC4738-GR,LF(T
MarqueToshiba
0,056 €
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 -
N° de stock RS 890-2660
Référence fabricant2SC4213-A(TE85L,F)
MarqueToshiba
0,215 €
Each (In a Pack of 25)
Unité
NPN 300 mA 20 V SOT-323 (SC-70) Surface Mount 100 mW Single 50 V 25 V - 3 1 2 x 1.25 x 0.9mm -
N° de stock RS 890-2617
Référence fabricant2SA1362-GR,LF(T
MarqueToshiba
0,112 €
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 890-2604
Référence fabricant2SA1312-BL(TE85L,F
MarqueToshiba
0,179 €
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 144-5316
Référence fabricantHN1C01FU-GR,LF(T
MarqueToshiba
0,068 €
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 -