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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Omschrijving Prijs 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
RS-stocknr. 103-2964
Fabrikantnummer2N3055G
FabrikantON Semiconductor
€ 3,352
Each (In a Tray of 100)
Aantal stuks
NPN 15 A 60 V TO-204AA Through Hole 115 W Single 100 V 7 V 2.5 MHz 2 1 8.51 x 39.37 x 26.67mm -
RS-stocknr. 163-2108
FabrikantnummerCPH5518-TL-H
FabrikantON Semiconductor
€ 0,148
Each (On a Reel of 3000)
Aantal stuks
NPN + PNP 1 A 50 V CPH Surface Mount 1.2 W Common Emitter 80 V -5 V, 5 V 420 MHz 5 2 2.9 x 1.6 x 0.9mm -
RS-stocknr. 739-0375
Fabrikantnummer2N3906BU
FabrikantON Semiconductor
€ 0,125
Each (In a Pack of 10)
Aantal stuks
PNP 200 mA 40 V TO-92 Through Hole 625 mW Single -40 V -5 V - 3 1 5.2 x 4.19 x 5.33mm -
RS-stocknr. 807-0842
FabrikantnummerFJA4310OTU
FabrikantON Semiconductor
€ 2,186
Each (In a Pack of 5)
Aantal stuks
NPN 10 A 140 V TO-3P Through Hole 100 W Single 200 V 6 V 30 MHz 3 1 15.8 x 5 x 20.1mm -
RS-stocknr. 800-9991
FabrikantnummerCPH5518-TL-H
FabrikantON Semiconductor
€ 0,362
Each (On a Tape of 25)
Aantal stuks
NPN + PNP 1 A 50 V CPH Surface Mount 1.2 W Common Emitter 80 V -5 V, 5 V 420 MHz 5 2 2.9 x 1.6 x 0.9mm -
RS-stocknr. 145-5439
FabrikantnummerFJA4310OTU
FabrikantON Semiconductor
€ 1,853
Each (In a Tube of 30)
Aantal stuks
NPN 10 A 140 V TO-3P Through Hole 100 W Single 200 V 6 V 30 MHz 3 1 15.8 x 5 x 20.1mm -
RS-stocknr. 774-3574
FabrikantnummerMJE243G
FabrikantON Semiconductor
€ 0,42
Each (In a Pack of 10)
Aantal stuks
NPN 4 A 100 V TO-225 Through Hole 15 W Single 100 V 7 V 10 MHz 3 1 7.74 x 2.66 x 11.04mm -
RS-stocknr. 545-2210
Fabrikantnummer2N3055G
FabrikantON Semiconductor
€ 4,94
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Aantal stuks
NPN 15 A 60 V TO-204 Through Hole 115 W Single 100 V 7 V 2.5 MHz 3 1 8.51 x 39.37 x 26.67mm -
RS-stocknr. 486-4577
FabrikantnummerMJE350
€ 0,49
Each (In a Pack of 5)
Aantal stuks
PNP 500 mA 300 V SOT-32 Through Hole 20.8 W Single 300 V 3 V - 3 1 10.8 x 7.8 x 2.7mm -
RS-stocknr. 803-1099
FabrikantnummerBC547CTFR
FabrikantON Semiconductor
€ 0,06
Each (In a Pack of 200)
Aantal stuks
NPN 100 mA 45 V TO-92 Through Hole 500 mW Single 50 V 6 V 1 MHz 3 1 4.58 x 3.86 x 4.58mm -
RS-stocknr. 166-1974
FabrikantnummerBC547CTFR
FabrikantON Semiconductor
€ 0,033
Each (On a Reel of 2000)
Aantal stuks
NPN 100 mA 45 V TO-92 Through Hole 500 mW Single 50 V 6 V 1 MHz 3 1 4.58 x 3.86 x 4.58mm -
RS-stocknr. 168-6254
FabrikantnummerMJE350
€ 0,409
Each (In a Tube of 50)
Aantal stuks
PNP 500 mA 300 V SOT-32 Through Hole 20.8 W Single 300 V 3 V - 3 1 10.8 x 7.8 x 2.7mm -
RS-stocknr. 146-2087
FabrikantnummerBC547CTA
FabrikantON Semiconductor
€ 0,029
Each (On a Tape of 2000)
Aantal stuks
NPN 100 mA 45 V TO-92 Through Hole 500 mW Single 50 V 6 V 300 MHz 3 1 4.58 x 3.86 x 4.58mm -
RS-stocknr. 761-9822
FabrikantnummerBC547CTA
FabrikantON Semiconductor
€ 0,059
Each (In a Pack of 100)
Aantal stuks
NPN 100 mA 45 V TO-92 Through Hole 500 mW Single 50 V 6 V 300 MHz 3 1 4.58 x 3.86 x 4.58mm -
RS-stocknr. 169-8696
Fabrikantnummer2N3906TAR
FabrikantON Semiconductor
€ 0,018
Each (On a Reel of 2000)
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PNP 200 mA 40 V TO-92 Through Hole 625 mW Single -40 V -5 V 250 MHz 3 1 5.2 x 4.19 x 5.33mm -
RS-stocknr. 751-4294
FabrikantnummerDSS4540X-13
FabrikantDiodesZetex
€ 0,084
Each (On a Tape of 25)
Aantal stuks
NPN 4 A 40 V SOT-89 Surface Mount 2 W Single 40 V 6 V 70 MHz 3 1 4.6 x 2.6 x 1.6mm -
RS-stocknr. 544-9630
FabrikantnummerMJ15023G
FabrikantON Semiconductor
€ 5,95
Each
Aantal stuks
PNP 16 A 200 V TO-204 Through Hole 250 W Single 350 V 5 V 4 MHz 3 1 8.51 x 39.37 x 26.67mm -
RS-stocknr. 739-0555
FabrikantnummerPN2222ABU
FabrikantON Semiconductor
€ 0,162
Each (In a Pack of 10)
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NPN 1 A 40 V TO-92 Through Hole 625 mW Single 75 V 6 V 300 MHz 3 1 5.2 x 4.19 x 5.33mm -
RS-stocknr. 166-2057
FabrikantnummerFSB560
FabrikantON Semiconductor
€ 0,063
Each (On a Reel of 3000)
Aantal stuks
NPN 2 A 60 V SOT-23 Surface Mount 500 mW Single 80 V 5 V 75 MHz 3 1 2.92 x 1.4 x 0.94mm -
RS-stocknr. 922-8386
FabrikantnummerDSS4540X-13
FabrikantDiodesZetex
€ 0,086
Each (On a Reel of 2500)
Aantal stuks
NPN 4 A 40 V SOT-89 Surface Mount 2 W Single 40 V 6 V 70 MHz 3 1 4.6 x 2.6 x 1.6mm -