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. 169-3158
Mfr. Part No.BD911
kr 11,07
Each
Units
NPN 15 A 100 V TO-220 Through Hole 90 W 5 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 168-6044
Mfr. Part No.BD911
kr 9,673
Each (In a Tube of 50)
Units
NPN 15 A 100 V TO-220 Through Hole 90 W 5 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 169-3164
Mfr. Part No.BD912
kr 22,93
Each
Units
PNP 15 A 100 V TO-220 Through Hole 90 W 5 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 168-6045
Mfr. Part No.BD912
kr 10,132
Each (In a Tube of 50)
Units
PNP 15 A 100 V TO-220 Through Hole 90 W 5 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 485-9705
Mfr. Part No.TIP2955
kr 14,716
Each (In a Pack of 5)
Units
PNP 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -
RS Stock No. 251-3564
Mfr. Part No.TIP35C
kr 22,73
Each
Units
NPN 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 251-3558
Mfr. Part No.TIP36C
kr 17,944
Each (In a Pack of 5)
Units
PNP 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 168-6055
Mfr. Part No.TIP36C
kr 15,048
Each (In a Tube of 30)
Units
PNP 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 168-6056
Mfr. Part No.TIP35C
kr 14,726
Each (In a Tube of 30)
Units
NPN 25 A 100 V TO-247 Through Hole 125 W 10 Single 100 V 5 V 3 MHz 3 1 -
RS Stock No. 168-6165
Mfr. Part No.TIP2955
kr 12,898
Each (In a Tube of 30)
Units
PNP 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -
RS Stock No. 791-7863
Mfr. Part No.STR1550
kr 2,901
Each (In a Pack of 50)
Units
NPN 500 mA 500 V SOT-23 Surface Mount 500 mW 10 Single 500 V 9 V - 3 1 -
RS Stock No. 714-0495
Mfr. Part No.BD136
kr 3,55
Each (In a Pack of 20)
Units
PNP 3 A 45 V SOT-32 Through Hole 1.25 W 25 Single 45 V 5 V - 3 1 -
RS Stock No. 686-8063
Mfr. Part No.BD139-16
kr 3,55
Each (In a Pack of 20)
Units
NPN 3 A 80 V SOT-32 Through Hole 1.25 W 100 Single 80 V 5 V - 3 1 -
RS Stock No. 165-6841
Mfr. Part No.STR1550
kr 0,977
Each (On a Reel of 3000)
Units
NPN 500 mA 500 V SOT-23 Surface Mount 500 mW 10 Single 500 V 9 V - 3 1 -
RS Stock No. 102-4110
Mfr. Part No.BD139-16
kr 3,224
Each (In a Tube of 50)
Units
NPN 3 A 80 V SOT-32 Through Hole 1.25 W 100 Single 80 V 5 V - 3 1 -
RS Stock No. 168-6254
Mfr. Part No.MJE350
kr 4,622
Each (In a Tube of 50)
Units
PNP 500 mA 300 V SOT-32 Through Hole 20.8 W 30 Single 300 V 3 V - 3 1 -
RS Stock No. 168-6139
Mfr. Part No.D45H11
kr 7,954
Each (In a Tube of 50)
Units
PNP 20 A 80 V TO-220 Through Hole 50 W 40 Single 80 V 5 V - 3 1 -
RS Stock No. 103-1578
Mfr. Part No.BU508AW
kr 19,884
Each (In a Tube of 30)
Units
NPN 8 A 700 V TO-247 Through Hole 125 W 5 Single - 9 V - 3 1 -
RS Stock No. 485-9143
Mfr. Part No.D45H11
kr 9,232
Each (In a Pack of 5)
Units
PNP 20 A 80 V TO-220 Through Hole 50 W 40 Single 80 V 5 V - 3 1 -
RS Stock No. 486-4577
Mfr. Part No.MJE350
kr 5,604
Each (In a Pack of 5)
Units
PNP 500 mA 300 V SOT-32 Through Hole 20.8 W 30 Single 300 V 3 V - 3 1 -