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).

...
Read more Read less

Filters

Viewing 1 - 20 of 240 products
Results per page
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. 145-8821
Mfr. Part No.SMBT2222AE6327HTSA1
BrandInfineon
R 0.399
Each (On a Reel of 3000)
units
NPN 600 mA 40 V SOT-23 Surface Mount 330 mW 100 Single 75 V 6 V 300 (Min.) MHz 3 1 -
RS stock no. 166-1081
Mfr. Part No.BCR505E6327HTSA1
BrandInfineon
R 0.38
Each (On a Reel of 3000)
units
NPN 500 mA 50 V SOT-23 Surface Mount - 70 Single - - - 3 - -
RS stock no. 445-2073
Mfr. Part No.BCR505E6327HTSA1
BrandInfineon
R 0.422
Each (In a Pack of 25)
units
NPN 500 mA 50 V SOT-23 Surface Mount - 70 Single - - - 3 - -
RS stock no. 825-9294
Mfr. Part No.SMBT2222AE6327HTSA1
BrandInfineon
R 1.059
Each (In a Pack of 200)
units
NPN 600 mA 40 V SOT-23 Surface Mount 330 mW 100 Single 75 V 6 V 300 (Min.) MHz 3 1 -
RS stock no. 168-018
Mfr. Part No.BFP520H6327XTSA1
BrandInfineon
R 5.003
Each (In a Pack of 10)
units
NPN 40 mA 2.5 V SOT-343 Surface Mount 100 mW 70 Single 10 V 1 V 6 GHz 4 1 -
RS stock no. 892-2245
Mfr. Part No.BFR183E6327HTSA1
BrandInfineon
R 3.606
Each (In a Pack of 50)
units
NPN 65 mA 12 V SOT-23 Surface Mount 450 mW 70 Single 20 V 2 V 8 GHz 3 - -
RS stock no. 167-958
Mfr. Part No.BFP196WH6327XTSA1
BrandInfineon
R 3.765
Each (In a Pack of 10)
units
NPN 150 mA 12 V SOT-343 Surface Mount 700 mW 70 Single 20 V 2 V 7500 MHz 4 1 -
RS stock no. 166-1137
Mfr. Part No.BFP520H6327XTSA1
BrandInfineon
R 1.671
Each (On a Reel of 3000)
units
NPN 40 mA 2.5 V SOT-343 Surface Mount 100 mW 70 Single 10 V 1 V 6 GHz 4 1 -
RS stock no. 165-8249
Mfr. Part No.BFR183E6327HTSA1
BrandInfineon
R 1.133
Each (On a Reel of 3000)
units
NPN 65 mA 12 V SOT-23 Surface Mount 450 mW 70 Single 20 V 2 V 8 GHz 3 - -
RS stock no. 445-2130
Mfr. Part No.BCX5616H6327XTSA1
BrandInfineon
R 3.847
Each (In a Pack of 10)
units
NPN 1 A 80 V SOT-89 Surface Mount 2 W 25 Single 100 V 5 V 100 MHz 3 1 -
RS stock no. 445-2219
Mfr. Part No.BFR92PE6327HTSA1
BrandInfineon
R 0.846
Each (In a Pack of 10)
units
NPN 45 mA 15 V SOT-23 Surface Mount 280 mW 70 Single 20 V 2.5 V 5000 MHz 3 1 -
RS stock no. 166-0863
Mfr. Part No.BFR92PE6327HTSA1
BrandInfineon
R 0.781
Each (On a Reel of 3000)
units
NPN 45 mA 15 V SOT-23 Surface Mount 280 mW 70 Single 20 V 2.5 V 5000 MHz 3 1 -
RS stock no. 826-8960
Mfr. Part No.BFP420H6327XTSA1
BrandInfineon
R 1.982
Each (In a Pack of 50)
units
NPN 60 mA 15 V SOT-343 Surface Mount 210 mW 60 Single 15 V 1.5 V 25 GHz 4 1 -
RS stock no. 287-487
Mfr. Part No.SMBTA42E6327HTSA1
BrandInfineon
R 0.467
Each (In a Pack of 10)
units
NPN 500 mA 300 V SOT-23 Surface Mount 360 mW 25 Single 300 V 6 V 70 MHz 3 1 -
RS stock no. 897-7188
Mfr. Part No.BFP420FH6327XTSA1
BrandInfineon
R 5.39
Each (In a Pack of 30)
units
NPN 60 mA 15 V TSFP Surface Mount 210 mW 60 Single 15 V 1.5 V - 4 1 -
RS stock no. 857-8466
Mfr. Part No.BFR360FH6765XTSA1
BrandInfineon
R 1.074
Each (On a Reel of 3000)
units
NPN 35 mA 6 V TSFP Surface Mount 210 mW 90 Single 15 V 2 V 14 GHz 3 1 -
RS stock no. 445-2023
Mfr. Part No.BC847CE6327HTSA1
BrandInfineon
R 2.433
Each (In a Pack of 50)
units
NPN 100 mA 45 V SOT-23 Surface Mount 330 mW 420 Single 50 V 6 V 250 MHz 3 1 -
RS stock no. 165-8072
Mfr. Part No.BFP420FH6327XTSA1
BrandInfineon
R 1.583
Each (On a Reel of 3000)
units
NPN 60 mA 15 V TSFP Surface Mount 210 mW 60 Single 15 V 1.5 V - 4 1 -
RS stock no. 165-8078
Mfr. Part No.BFP650FH6327XTSA1
BrandInfineon
R 2.669
Each (On a Reel of 3000)
units
NPN 150 mA 13 V TSFP Surface Mount 500 mW 110 Single 13 V 1.2 V - 4 1 -
RS stock no. 911-4739
Mfr. Part No.BCX5116H6327XTSA1
BrandInfineon
R 1.494
Each (On a Reel of 1000)
units
PNP 1 A 45 V SOT-89 Surface Mount 2 W 25 Single 45 V 5 V 125 MHz 4 1 -