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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Omschrijving Prijs 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-stocknr. 710-5821
FabrikantnummerDMA201010R
FabrikantPanasonic
€ 0,294
Each (In a Pack of 20)
Aantal stuks
PNP - 50 V Mini5 G3 B Surface Mount 300 mW 210 Common Emitter - -7 V - 5 2 -
RS-stocknr. 168-3647
FabrikantnummerDMG904010R
FabrikantPanasonic
€ 0,18
Each (On a Reel of 8000)
Aantal stuks
NPN + PNP 100 mA 50 V SSMini6 F3 B Surface Mount 125 mW 210 (NPN), 210 (PNP) Isolated - -7 (PNP) V, 7 (NPN) V - 6 2 -
RS-stocknr. 710-5824
FabrikantnummerDMA202010R
FabrikantPanasonic
€ 0,27
Each (In a Pack of 20)
Aantal stuks
PNP - 50 V Mini5 G3 B Surface Mount 300 mW 210 Common Base - -7 V - 5 2 -
RS-stocknr. 168-3657
FabrikantnummerDSC7Q01Q0L
FabrikantPanasonic
€ 0,323
Each (On a Reel of 1000)
Aantal stuks
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W 4000 Single 100 V 5 V - 3 2 -
RS-stocknr. 710-5828
FabrikantnummerDMA204010R
FabrikantPanasonic
€ 0,27
Each (In a Pack of 20)
Aantal stuks
PNP - 50 V Mini6 G4 B Surface Mount 300 mW 210 Isolated - -7 V - 6 2 -
RS-stocknr. 168-3362
FabrikantnummerDSC2001R0L
FabrikantPanasonic
€ 0,04
Each (On a Reel of 3000)
Aantal stuks
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS-stocknr. 168-3650
FabrikantnummerDSC710100L
FabrikantPanasonic
€ 0,21
Each (On a Reel of 1000)
Aantal stuks
NPN 500 mA 80 V MiniP3 F2 B Surface Mount 1 W 130 Single 80 V 5 V 150 MHz 3 1 -
RS-stocknr. 710-6035
FabrikantnummerDMC505010R
FabrikantPanasonic
€ 0,304
Each (In a Pack of 20)
Aantal stuks
NPN 100 mA 50 V SMini6 F3 B Surface Mount 150 mW 210 Isolated 60 V 7 V 150 MHz 6 2 -
RS-stocknr. 168-3695
FabrikantnummerDMA501010R
FabrikantPanasonic
€ 0,10
Each (On a Reel of 3000)
Aantal stuks
PNP - 50 V SMini5 F3 B Surface Mount 150 mW 210 Common Emitter - -7 V - 5 2 -
RS-stocknr. 168-3721
FabrikantnummerDMC201A00R
FabrikantPanasonic
€ 0,176
Each (On a Reel of 3000)
Aantal stuks
NPN 500 mA 20 V Mini5 G3 B Surface Mount 300 mW 200 Common Emitter 25 V 12 V 150 MHz 5 2 -
RS-stocknr. 168-3471
FabrikantnummerDSA5001S0L
FabrikantPanasonic
€ 0,06
Each (On a Reel of 3000)
Aantal stuks
PNP 100 mA 50 V SMini3 F2 B Surface Mount 150 mW 290 Single -60 V -7 V 150 MHz 3 1 -
RS-stocknr. 710-5947
FabrikantnummerDMC201010R
FabrikantPanasonic
€ 0,27
Each (In a Pack of 20)
Aantal stuks
NPN 100 mA 50 V Mini5 G3 B Surface Mount 300 mW 210 Isolated 60 V 7 V 150 MHz 5 2 -
RS-stocknr. 168-3655
FabrikantnummerDSC7505R0L
FabrikantPanasonic
€ 0,34
Each (On a Reel of 1000)
Aantal stuks
NPN 3 A 20 V MiniP3 F2 B Surface Mount 1 W 340 Single 40 V 7 V 200 MHz 3 1 -
RS-stocknr. 715-9730
FabrikantnummerDMC562000R
FabrikantPanasonic
€ 0,324
Each (In a Pack of 20)
Aantal stuks
NPN 100 mA 50 V SMini5 F3 B Surface Mount - - Common Base - - - 5 2 -
RS-stocknr. 711-5742
FabrikantnummerDSC710100L
FabrikantPanasonic
€ 0,441
Each (In a Pack of 10)
Aantal stuks
NPN 500 mA 80 V MiniP3 F2 B Surface Mount 1 W 130 Single 80 V 5 V 150 MHz 3 1 -
RS-stocknr. 168-3582
FabrikantnummerDMC202010R
FabrikantPanasonic
€ 0,107
Each (On a Reel of 3000)
Aantal stuks
NPN 100 mA 50 V Mini5 G3 B Surface Mount 300 mW 210 Common Base 60 V 7 V 150 MHz 5 2 -
RS-stocknr. 168-3381
FabrikantnummerDSC500100L
FabrikantPanasonic
€ 0,078
Each (On a Reel of 3000)
Aantal stuks
NPN 100 mA 50 V SMini3 F2 B Surface Mount 150 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS-stocknr. 168-3726
FabrikantnummerDMC204C00R
FabrikantPanasonic
€ 0,10
Each (On a Reel of 3000)
Aantal stuks
NPN 20 mA 100 V Mini6 G4 B Surface Mount 300 mW 400 Isolated 100 V 15 V 140 MHz 6 2 -
RS-stocknr. 713-2725
FabrikantnummerDMA501010R
FabrikantPanasonic
€ 0,27
Each (In a Pack of 20)
Aantal stuks
PNP - 50 V SMini5 F3 B Surface Mount 150 mW 210 Common Emitter - -7 V - 5 2 -
RS-stocknr. 711-5544
FabrikantnummerDMG904010R
FabrikantPanasonic
€ 0,44
Each (In a Pack of 10)
Aantal stuks
NPN + PNP 100 mA 50 V SSMini6 F3 B Surface Mount 125 mW 210 (NPN), 210 (PNP) Isolated - -7 (PNP) V, 7 (NPN) V - 6 2 -