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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제품설명 단가 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
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제조사 부품 번호BC857C,235
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₩24.80
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PNP 100 mA -45 V SOT-23 Surface Mount 250 mW 420 Single -50 V -5 V - 3 1 AEC-Q101
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제조사 부품 번호BC338-16 A1
₩62.00
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NPN 800 mA 25 V TO-92 Through Hole 625 mW 100 Single 30 V 5 V - 3 1 -
RS 제품 번호 508-236
제조사 부품 번호BC857C,215
제조사Nexperia
₩55.80
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PNP 100 mA 45 V SOT-23 (TO-236AB) Surface Mount 250 mW 420 Single 50 V 5 V 100 MHz 3 1 -
RS 제품 번호 802-1939
제조사 부품 번호MPSW56RLRAG
제조사ON Semiconductor
₩398.35
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PNP 500 mA 80 V TO-92 Through Hole 2.5 W 100 Single -80 V dc -4 V 50 (Min.) MHz 3 1 -
RS 제품 번호 121-9416
제조사 부품 번호FZT849TA
제조사DiodesZetex
₩582.80
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NPN 7 A 30 V SOT-223 Surface Mount 3 W 30 Single 80 V 6 V 100 MHz 3 + Tab 1 -
RS 제품 번호 781-5092
제조사 부품 번호NSS40201LT1G
제조사ON Semiconductor
₩403.00
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NPN 2 A 40 V SOT-23 Surface Mount 460 mW 180 Single 40 V dc 6 V 100 MHz 3 1 -
RS 제품 번호 438-4598
제조사 부품 번호BCP53,115
제조사Nexperia
₩133.30
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PNP 1 A 80 V SOT-223 (SC-73) Surface Mount 1 W 40 Single 100 V 5 V 145 MHz 4 1 -
RS 제품 번호 145-5537
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제조사ON Semiconductor
₩54.25
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NPN 1.5 A 25 V TO-92 Through Hole 1 W 40 Single 40 V 6 V - 3 1 -
RS 제품 번호 166-3785
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제조사ON Semiconductor
₩57.35
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NPN 50 mA 120 V TO-92 Through Hole 500 mW 150 Single 120 V 5 V 110 MHz 3 1 -
RS 제품 번호 669-7593
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₩1,339.20
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PNP 1 A 300 V SOT-223 Surface Mount 3 W 90 Single 300 V 6 V 85 MHz 3 + Tab 1 -
RS 제품 번호 544-901
제조사 부품 번호2SC3601E
제조사Sanyo
₩1,581.00
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NPN 150 mA 200 V TO-126 Through Hole 1.2 W 20 - 200 V 4 V 400 MHz 3 1 -
RS 제품 번호 102-1375
제조사 부품 번호MJE15032G
제조사ON Semiconductor
₩1,697.25
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NPN 8 A 250 V TO-220AB Through Hole 2 W 10 Single 250 V 5 V 30 MHz 3 1 -
RS 제품 번호 806-2734
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제조사ON Semiconductor
₩528.55
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PNP 100 mA 300 V TO-126 Through Hole 7 W 40 Single -300 V -5 V 150 MHz 3 1 -
RS 제품 번호 296-273
제조사 부품 번호MJ15004G
제조사ON Semiconductor
₩8,931.10
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PNP 20 A 140 V TO-204AA Through Hole 250 W 25 Single 140 V 5 V 2 MHz 2 1 -
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₩198.40
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NPN 100 mA 65 V TO-92 Through Hole 500 mW 420 Single 80 V 6 V - 3 1 -
RS 제품 번호 486-4577
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₩860.25
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PNP 500 mA 300 V SOT-32 Through Hole 20.8 W 30 Single 300 V 3 V - 3 1 -
RS 제품 번호 803-1131
제조사 부품 번호BC556BTFR
제조사ON Semiconductor
₩94.55
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PNP 100 mA 65 V TO-92 Through Hole 500 mW 110 Single -80 V -5 V 10 MHz 3 1 -
RS 제품 번호 166-1817
제조사 부품 번호MMBT2907A
제조사ON Semiconductor
₩51.15
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PNP 800 mA 60 V SOT-23 Surface Mount 350 mW 50 Single 60 V 5 V - 3 1 -
RS 제품 번호 166-3072
제조사 부품 번호BC556BTA
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₩41.85
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PNP 100 mA 65 V TO-92 Through Hole 500 mW 110 Single -80 V -5 V 10 MHz 3 1 -
RS 제품 번호 761-9831
제조사 부품 번호BC556BTA
제조사ON Semiconductor
₩79.05
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PNP 100 mA 65 V TO-92 Through Hole 500 mW 110 Single -80 V -5 V 150 MHz 3 1 -