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 21 - 40 of 4447 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. 890-2682
Mfr. Part No.2SC5200-O(S1,F,S)
BrandToshiba
TWD78.40
Each (In a Pack of 5)
units
NPN 15 A 230 V TO-3PL Through Hole 150 W 35 Single 230 V 5 V - 3 1 -
RS Stock No. 165-8768
Mfr. Part No.BC56PA
BrandNexperia
TWD3.00
Each (On a Reel of 3000)
units
NPN 1 A 80 V SOT-1061 Surface Mount 1.65 W 40 Single 100 V 5 V 100 MHz 3 1 -
RS Stock No. 803-1096
Mfr. Part No.BC547CBU
TWD1.90
Each (In a Pack of 200)
units
NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
RS Stock No. 169-8612
Mfr. Part No.BC547CBU
TWD1.00
Each (In a Bag of 1000)
units
NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
RS Stock No. 808-0467
Mfr. Part No.SS9014ABU
TWD1.80
Each (In a Pack of 200)
units
NPN 100 mA 45 V TO-92 Through Hole 450 mW 60 Single 50 V 5 V 1 MHz 3 1 -
RS Stock No. 177-7988
Mfr. Part No.2SC4081T106Q/R
BrandROHM
TWD0.90
Each (On a Reel of 3000)
units
NPN 150 mA 50 V SOT-323 (SC-70) Surface Mount 200 mW 120 Single 60 V 7 V 180 MHz 3 1 -
RS Stock No. 531-9450
Mfr. Part No.2SC3421-Y(Q)
BrandToshiba
TWD19.00
Each (In a Pack of 10)
units
NPN 1 A 120 V TO-126IS Through Hole 1.5 W 120 - 120 V 5 V 120 MHz 3 1 -
RS Stock No. 102-2272
Mfr. Part No.MJD44H11G
TWD8.60
Each (In a Tube of 75)
units
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS Stock No. 103-2964
Mfr. Part No.2N3055G
TWD91.60
Each (In a Tray of 100)
units
NPN 15 A 60 V TO-204AA Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 2 1 -
RS Stock No. 545-2210
Mfr. Part No.2N3055G
TWD100.00
Each
units
NPN 15 A 60 V TO-204 Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 3 1 -
RS Stock No. 669-7720
Mfr. Part No.BST39TA
BrandNexperia
TWD6.20
Each (In a Pack of 25)
units
NPN 500 mA 350 V SOT-89 Surface Mount 1 W 40 Single 400 V 5 V 70 MHz 3 1 -
RS Stock No. 806-4471
Mfr. Part No.KSC1815YTA
TWD2.10
Each (In a Pack of 200)
units
NPN 150 mA 50 V TO-92 Through Hole 400 mW 25 Single 60 V 5 V 1 MHz 3 1 -
RS Stock No. 320-8229
Mfr. Part No.2SC4081T106Q/R
BrandROHM
TWD2.90
Each (In a Pack of 25)
units
NPN 150 mA 50 V SOT-323 (SC-70) Surface Mount 200 mW 120 Single 60 V 7 V 180 MHz 3 1 -
RS Stock No. 464-142
Mfr. Part No.MJD44H11G
TWD16.60
Each (In a Pack of 20)
units
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS Stock No. 122-0089
Mfr. Part No.MJ15025G
TWD135.40
Each (In a Tray of 100)
units
PNP 16 A 250 V TO-204 Through Hole 250 W 5 Single 400 V 5 V 4 MHz 3 1 -
RS Stock No. 168-6168
Mfr. Part No.TIP3055
TWD19.40
Each (In a Tube of 30)
units
NPN 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -
RS Stock No. 463-638
Mfr. Part No.MJD44H11T4G
TWD16.10
Each (In a Pack of 20)
units
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS Stock No. 544-9703
Mfr. Part No.MJ15025G
TWD185.00
Each
units
PNP 16 A 250 V TO-204 Through Hole 250 W 5 Single 400 V 5 V 4 MHz 3 1 -
RS Stock No. 170-3360
Mfr. Part No.MJD44H11T4G
TWD6.80
Each (On a Reel of 2500)
units
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS Stock No. 485-9727
Mfr. Part No.TIP3055
TWD38.00
Each (In a Pack of 5)
units
NPN 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -