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 Price 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 Stock No. 103-5143
Mfr. Part No.MJL21194G
kr 33,212
Each (In a Tube of 25)
Units
NPN 16 A 250 V TO-3BPL Through Hole 200 W 8 Single 400 V 5 V 1 MHz 3 1 -
RS Stock No. 774-3571
Mfr. Part No.MJL21194G
kr 39,08
Each
Units
NPN 16 A 250 V TO-3BPL Through Hole 200 W 8 Single 400 V 5 V 1 MHz 3 1 -
RS Stock No. 545-0343
Mfr. Part No.MMBT3904LT1G
kr 0,979
Each (In a Pack of 50)
Units
NPN 200 mA 40 V SOT-23 Surface Mount 300 mW 40 Single 60 V 6 V 300 MHz 3 1 -
RS Stock No. 545-2484
Mfr. Part No.BC560CG
kr 0,796
Each (In a Pack of 50)
Units
PNP 100 mA 45 V TO-92 Through Hole 625 mW 100 Single 50 V 5 V 250 MHz 3 1 -
RS Stock No. 103-2948
Mfr. Part No.MMBT3904LT1G
kr 0,107
Each (On a Reel of 3000)
Units
NPN 200 mA 40 V SOT-23 Surface Mount 300 mW 40 Single 60 V 6 V 300 MHz 3 1 -
RS Stock No. 170-3540
Mfr. Part No.MMBT3904LT3G
kr 0,096
Each (On a Reel of 10000)
Units
NPN 900 mA 40 V SOT-23 Surface Mount 300 mW 30 Single 60 V dc 6 V 100 MHz 3 1 -
RS Stock No. 793-0753
Mfr. Part No.MMBT3904LT3G
kr 0,10
Each (In a Pack of 200)
Units
NPN 900 mA 40 V SOT-23 Surface Mount 300 mW 30 Single 60 V dc 6 V 100 MHz 3 1 -
RS Stock No. 145-2798
Mfr. Part No.BC560CG
kr 0,259
Each (In a Bag of 5000)
Units
PNP 100 mA 45 V TO-92 Through Hole 625 mW 100 Single 50 V 5 V 250 MHz 3 1 -
RS Stock No. 169-8617
Mfr. Part No.BC550CTA
kr 0,322
Each (On a Tape of 2000)
Units
NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 5 V 1 MHz 3 1 -
RS Stock No. 102-1375
Mfr. Part No.MJE15032G
kr 11,286
Each (In a Tube of 50)
Units
NPN 8 A 250 V TO-220AB Through Hole 2 W 10 Single 250 V 5 V 30 MHz 3 1 -
RS Stock No. 463-634
Mfr. Part No.MJE15032G
kr 13,22
Each (In a Pack of 5)
Units
NPN 8 A 250 V TO-220AB Through Hole 2 W 10 Single 250 V 5 V 30 MHz 3 1 -
RS Stock No. 803-1125
Mfr. Part No.BC550CTA
kr 0,537
Each (In a Pack of 200)
Units
NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 5 V 1 MHz 3 1 -
RS Stock No. 145-3904
Mfr. Part No.SMMBT2222ALT1G
kr 0,322
Each (On a Reel of 3000)
Units
NPN 600 mA 40 V SOT-23 Surface Mount 225 mW 40 Single 75 V dc 6 V 100 MHz 3 1 AEC-Q101
RS Stock No. 761-3701
Mfr. Part No.MPSA42
kr 2,58
Each (In a Pack of 50)
Units
NPN 500 mA 300 V TO-92 Through Hole 625 mW 25 Single 300 V 6 V 50 MHz 3 1 -
RS Stock No. 781-5222
Mfr. Part No.SMMBT2222ALT1G
kr 0,645
Each (In a Pack of 100)
Units
NPN 600 mA 40 V SOT-23 Surface Mount 225 mW 40 Single 75 V dc 6 V 100 MHz 3 1 AEC-Q101
RS Stock No. 124-1357
Mfr. Part No.MPSA42
kr 0,717
Each (In a Bag of 1000)
Units
NPN 500 mA 300 V TO-92 Through Hole 625 mW 25 Single 300 V 6 V 50 MHz 3 1 -
RS Stock No. 739-0442
Mfr. Part No.2N3904TA
kr 2,363
Each (In a Pack of 10)
Units
NPN 200 mA 40 V TO-92 Through Hole 625 mW 30 Single 60 V 6 V 300 MHz 3 1 -
RS Stock No. 790-5460
Mfr. Part No.NJW3281G
kr 30,46
Each (In a Pack of 2)
Units
NPN 15 A 250 V TO-3P Through Hole 200 W 45 Single 250 V dc 5 V 1 MHz 3 1 -
RS Stock No. 739-0335
Mfr. Part No.SS8050DTA
kr 0,837
Each (In a Pack of 10)
Units
NPN 1.5 A 25 V TO-92 Through Hole 1 W 40 Single 40 V 6 V - 3 1 -
RS Stock No. 145-5537
Mfr. Part No.SS8050DTA
kr 0,363
Each (On a Tape of 2000)
Units
NPN 1.5 A 25 V TO-92 Through Hole 1 W 40 Single 40 V 6 V - 3 1 -