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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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庫存編號 799-4817
製造零件編號2SC5200-O(S1,F,S)
BrandToshiba
TWD81.20
/個 (每包:5個)
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NPN 15 A 230 V TO-3PL Through Hole 150 W 35 Single 230 V 5 V 30 MHz 3 1 -
RS庫存編號 169-8612
製造零件編號BC547CBU
TWD1.50
個 (以毎袋:1000)
單位
NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
RS庫存編號 803-1096
製造零件編號BC547CBU
TWD2.10
/個 (每包:200個)
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NPN 100 mA 45 V TO-92 Through Hole 500 mW 110 Single 50 V 6 V 1 MHz 3 1 -
RS庫存編號 890-2682
製造零件編號2SC5200-O(S1,F,S)
BrandToshiba
TWD89.20
/個 (每包:5個)
單位
NPN 15 A 230 V TO-3PL Through Hole 150 W 35 Single 230 V 5 V - 3 1 -
RS庫存編號 165-8768
製造零件編號BC56PA
BrandNexperia
TWD3.10
個 (在毎卷:3000)
單位
NPN 1 A 80 V SOT-1061 Surface Mount 1.65 W 40 Single 100 V 5 V 100 MHz 3 1 -
RS庫存編號 669-7720
製造零件編號BST39TA
BrandNexperia
TWD12.40
/個 (每包:25個)
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NPN 500 mA 350 V SOT-89 Surface Mount 1 W 40 Single 400 V 5 V 70 MHz 3 1 -
RS庫存編號 545-2210
製造零件編號2N3055G
TWD204.00
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NPN 15 A 60 V TO-204 Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 3 1 -
RS庫存編號 544-9703
製造零件編號MJ15025G
TWD231.00
單位
PNP 16 A 250 V TO-204 Through Hole 250 W 5 Single 400 V 5 V 4 MHz 3 1 -
RS庫存編號 170-3360
製造零件編號MJD44H11T4G
TWD7.00
個 (在毎卷:2500)
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NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS庫存編號 168-6168
製造零件編號TIP3055
TWD25.80
毎管:30 個
單位
NPN 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -
RS庫存編號 806-4471
製造零件編號KSC1815YTA
TWD2.10
/個 (每包:200個)
單位
NPN 150 mA 50 V TO-92 Through Hole 400 mW 25 Single 60 V 5 V 1 MHz 3 1 -
RS庫存編號 102-2272
製造零件編號MJD44H11G
TWD17.10
毎管:75 個
單位
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS庫存編號 103-2964
製造零件編號2N3055G
TWD138.30
Each (In a Tray of 100)
單位
NPN 15 A 60 V TO-204AA Through Hole 115 W 5 Single 100 V 7 V 2.5 MHz 2 1 -
RS庫存編號 531-9450
製造零件編號2SC3421-Y(Q)
BrandToshiba
TWD19.00
/個 (每包:10個)
單位
NPN 1 A 120 V TO-126IS Through Hole 1.5 W 120 - 120 V 5 V 120 MHz 3 1 -
RS庫存編號 485-9727
製造零件編號TIP3055
TWD31.40
/個 (每包:5個)
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NPN 15 A 60 V TO-247 Through Hole 90 W 5 Single 100 V - 3 MHz 3 1 -
RS庫存編號 122-0089
製造零件編號MJ15025G
TWD173.20
Each (In a Tray of 100)
單位
PNP 16 A 250 V TO-204 Through Hole 250 W 5 Single 400 V 5 V 4 MHz 3 1 -
RS庫存編號 463-638
製造零件編號MJD44H11T4G
TWD16.90
/個 (每包:20個)
單位
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS庫存編號 124-1394
製造零件編號KSC1815YTA
TWD1.20
個 (在毎卷:2000)
單位
NPN 150 mA 50 V TO-92 Through Hole 400 mW 25 Single 60 V 5 V 1 MHz 3 1 -
RS庫存編號 464-142
製造零件編號MJD44H11G
TWD17.10
/個 (每包:20個)
單位
NPN 8 A 80 V DPAK (TO-252) Surface Mount 1.75 W 40 Single - 5 V 85 MHz 3 1 -
RS庫存編號 320-8229
製造零件編號2SC4081T106Q/R
BrandROHM
TWD1.40
/個 (每包:25個)
單位
NPN 150 mA 50 V SOT-323 (SC-70) Surface Mount 200 mW 120 Single 60 V 7 V 180 MHz 3 1 -