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. 857-8393
FabrikantnummerBCW61BE6327HTSA1
FabrikantInfineon
0,029 €
Each (On a Reel of 3000)
Aantal stuks
PNP 100 mA 32 V SOT-23 Surface Mount 330 mW 20 Single -32 V -5 V 250 MHz 3 1 -
RS-stocknr. 165-8080
FabrikantnummerBFP650H6327XTSA1
FabrikantInfineon
0,253 €
Each (On a Reel of 3000)
Aantal stuks
NPN 150 mA 13 V SOT-343 Surface Mount 500 mW 100 Single 13 V 1.2 V - 4 1 -
RS-stocknr. 911-4713
FabrikantnummerBDP949
FabrikantInfineon
0,234 €
Each (On a Reel of 1000)
Aantal stuks
NPN 3 A 60 V SOT-223 Surface Mount 5 W 50 Single 60 V 5 V 100 MHz 4 1 -
RS-stocknr. 897-7374
FabrikantnummerBFP650H6327XTSA1
FabrikantInfineon
0,337 €
Each (In a Pack of 15)
Aantal stuks
NPN 150 mA 13 V SOT-343 Surface Mount 500 mW 100 Single 13 V 1.2 V - 4 1 -
RS-stocknr. 166-1011
FabrikantnummerBC847CE6433HTMA1
FabrikantInfineon
0,02 €
Each (On a Reel of 10000)
Aantal stuks
NPN 100 mA 50 V SOT-23 Surface Mount 330 mW 110 Single 50 V 6 V - 3 1 -
RS-stocknr. 445-2146
FabrikantnummerBDP949
FabrikantInfineon
0,614 €
Each (In a Pack of 5)
Aantal stuks
NPN 3 A 60 V SOT-223 Surface Mount 5 W 25 Single 60 V 5 V 100 MHz 3 + Tab 1 -
RS-stocknr. 445-2039
FabrikantnummerBC848CE6327HTSA1
FabrikantInfineon
0,018 €
Each (In a Pack of 50)
Aantal stuks
NPN 100 mA 30 V SOT-23 Surface Mount 330 mW 420 Single 30 V 6 V 250 MHz 3 1 -
RS-stocknr. 110-7118
FabrikantnummerBC847CE6433HTMA1
FabrikantInfineon
0,036 €
Each (In a Pack of 500)
Aantal stuks
NPN 100 mA 50 V SOT-23 Surface Mount 330 mW 110 Single 50 V 6 V - 3 1 -
RS-stocknr. 165-5870
FabrikantnummerBCV62CE6327HTSA1
FabrikantInfineon
0,069 €
Each (On a Reel of 3000)
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PNP 100 mA 30 V SOT-143 Surface Mount 300 mW 100 Current Mirror 30 V 6 V 250 MHz 4 2 -
RS-stocknr. 165-7642
FabrikantnummerBCP5116H6327XTSA1
FabrikantInfineon
0,102 €
Each (On a Reel of 1000)
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PNP 1 A 45 V SOT-223 Surface Mount 2 W 25 Single 45 V 5 V 125 MHz 3 + Tab 1 -
RS-stocknr. 165-8250
FabrikantnummerBFR340FH6327XTSA1
FabrikantInfineon
0,104 €
Each (On a Reel of 3000)
Aantal stuks
NPN 20 mA 6 V TSFP Surface Mount 75 mW 90 Single 15 V 2 V 14 GHz 3 - -
RS-stocknr. 752-8120
FabrikantnummerBFN27E6327HTSA1
FabrikantInfineon
0,064 €
Each (On a Tape of 50)
Aantal stuks
PNP 200 mA 300 V SOT-23 Surface Mount 360 mW 25 Single 300 V 5 V - 3 1 -
RS-stocknr. 110-7146
FabrikantnummerBC857BE6433HTMA1
FabrikantInfineon
0,044 €
Each (In a Pack of 500)
Aantal stuks
PNP 100 mA 45 V SOT-23 Surface Mount 330 mW 125 Single 50 V 5 V - 3 1 -
RS-stocknr. 897-7188
FabrikantnummerBFP420FH6327XTSA1
FabrikantInfineon
0,268 €
Each (In a Pack of 30)
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NPN 60 mA 15 V TSFP Surface Mount 210 mW 60 Single 15 V 1.5 V - 4 1 -
RS-stocknr. 110-7136
FabrikantnummerBDP953H6327XTSA1
FabrikantInfineon
0,451 €
Each (In a Pack of 40)
Aantal stuks
NPN 3 A 100 V SOT-223 Surface Mount 5 W 15 Single 120 V 5 V - 3 + Tab 1 -
RS-stocknr. 752-8101
FabrikantnummerBCX53H6327XTSA1
FabrikantInfineon
0,162 €
Each (In a Pack of 25)
Aantal stuks
PNP 1 A 80 V SOT-89 Surface Mount 2 W 25 Single 100 V 5 V 125 MHz 3 1 -
RS-stocknr. 165-5925
FabrikantnummerBCX41E6327HTSA1
FabrikantInfineon
0,059 €
Each (On a Reel of 3000)
Aantal stuks
NPN 800 mA 125 V SOT-23 Surface Mount 330 mW 63 Single 125 V 5 V 100 MHz 3 1 -
RS-stocknr. 145-9624
FabrikantnummerBC857BWH6327XTSA1
FabrikantInfineon
0,019 €
Each (On a Reel of 3000)
Aantal stuks
PNP 100 mA 45 V SOT-323 (SC-70) Surface Mount 250 mW 220 Single 50 V 5 V 250 MHz 3 1 -
RS-stocknr. 857-8425
FabrikantnummerBCX71JE6433HTMA1
FabrikantInfineon
0,02 €
Each (On a Reel of 10000)
Aantal stuks
PNP 100 mA 45 V SOT-23 Surface Mount 330 mW 20 Single -45 V -5 V 250 MHz 3 1 -
RS-stocknr. 168-018
FabrikantnummerBFP520H6327XTSA1
FabrikantInfineon
0,229 €
Each (In a Pack of 10)
Aantal stuks
NPN 40 mA 2.5 V SOT-343 Surface Mount 100 mW 70 Single 10 V 1 V 6 GHz 4 1 -