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Bipolar transistors

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Bipolar transistor NPN BC639 80V/1A - 5pcs

Bipolar transistor NPN, 80 V, 1 A. Pinout: ECB. Price for 5 pieces.
Index: UCC-00683
Index: UCC-00683
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Regular price €0.44 Price €0.44

Bipolar transistor NPN BC337-40 45V / 0,8A - 5pcs

Bipolar transistor NPN, 45 V, 0.8 A. Pinout: CBE. Price for 5 pieces.
Index: UCC-01239
Index: UCC-01239
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Regular price €0.35 Price €0.35

Bipolar transistor NPN BC546B 65V/0,1A - 5pcs.

Bipolar transistor NPN, 65 V, 0.1 A. Pinout: CBE. Price for 5 pieces.
Index: UCC-05248
Index: UCC-05248
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Regular price €0.23 Price €0.23

Bipolar transistor NPN BD911 100V/15A - 5 pcs.

NPN bipolar transistor, 100 V, 15 A. Lead arrangement: BCE. Price for 5 pieces.
Index: UCC-07875
Index: UCC-07875
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Regular price €1.98 Price €1.98

Bipolar transistor NPN 2N3904 40V/0,2A - 5pcs

Bipolar transistor NPN, 40 V, 0.2 A. Pinout ECB. Price for 5 pieces.
Index: UCC-01775
Index: UCC-01775
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Bipolar transistor NPN BC547B 50V/0,1A - 5pcs

Bipolar transistor NPN, 50 V, 100 mA. Pinout: CBE. Price for 5 pieces.
Index: UCC-00254
Index: UCC-00254
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Bipolar transistor PNP BC557C 45V / 0,1A - 5pcs

Bipolar transistor PNP, 45 V / 0.1 A. Pinout: ECB. Price for 5 pieces.
Index: UCC-02063
Index: UCC-02063
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Set of bipolar transistors NPN and PNP TO-92 - 15 values - E49 - 300 pcs.

Set includes 300 pcs of transistor To-92 with 15 different values, 20 pcs in each. All is closed in a little organiser.
Index: GRL-12117
Index: GRL-12117
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Regular price €11.60 Price €11.60

Bipolar transistor PNP BC556B 65V/0,1A - 5pcs.

Set of five PNP BC556B bipolar transistors in TO-92 package. Transistors equipped with three leads: emitter, base, collector. They are designed for through-hole THT...
Index: AKS-19033
Index: AKS-19033
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Bipolar transistor NPN BC338-40 25V/0,8A - 5pcs

Bipolar transistor, NPN, 25 V, 0,8 A. Pinout: CBE. Price for 5 pieces.
Index: UCC-03545
Index: UCC-03545
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Regular price €0.28 Price €0.28

Test kit, electronic component tester - M12864 KIT

The set for testing and the recognition of electronic components such as bipolar transistors PNP, NPN, MOSFET transistors with channel P and N, field transistors JFET and LEDs....
Index: MOD-05056
Index: MOD-05056
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Regular price €22.56 Price €22.56

Transistors kit TO92 - 180pcs

A set of 18 types bipolar transistors in TO92 case, 10 pieces in each.
Index: UCC-07579
Index: UCC-07579
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Regular price €4.63 Price €4.63

Test kit, THT electronic components tester - BTE-056

Kit for testing and recognition of electronic components such as PNP, NPN bipolar transistors, MOSFET transistors with P and N channels and diodes. Built-in screen allows to...
Index: MOD-06282
Index: MOD-06282
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Regular price €14.88 Price €14.88

Test set, tester of electronic elements THT and SMD - BTE-057

Test set for testing and recognition electronic components such as bipolar transistors PNP, NPN, MOS transistors with channel P and N, and LEDs. Built-in screen allows you to...
Index: MOD-06283
Index: MOD-06283
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Regular price €27.67 Price €27.67

Bipolar transistor NPN 2N2222A ST - 5pcs.

Set of five NPN 2N2222A bipolar transistors in TO-92 package. Transistors are equipped with three leads: emitter, base, collector. They are designed for through-hole THT...
Index: AKS-18995
Index: AKS-18995
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Regular price €0.23 Price €0.23

Bipolar transistor NPN Darlington MPSA29 100V/0.8A

Bipolar transistor NPN, 100 V, 800 mA. Pinout: ECB. Price for 1 piece.
Index: UCC-05023
Index: UCC-05023
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Regular price €0.22 Price €0.22

Transistor BJT – the most basic element

The bipolar blade transistor was invented in December 1947 at Bell Telephone Laboratories by John Bardeen and Walter Brattain, working under William Shockley. The next iteration of this design, the bipolar junction transistor (BJT), was invented by Shockley a year later. This opened up enormous possibilities in electronics. Transistors replaced vacuum tubes. They are better, smaller and more energy-efficient, but the technology for producing these types of elements has changed dramatically from the time of their invention to today. However, they are still an indispensable part of every electronic circuit. Transistors not only made it possible to reduce the size of radios and televisions, but also enabled the creation of integrated circuits which often contain millions of transistors in their structure.

How are bipolar transistors made?

A bipolar transistor consists of three differently doped semiconductor regions - emitter, base and collector. These regions are P- or N-type doped and arranged alternately. Each semiconductor region is connected to a terminal, labelled accordingly - emitter (E), base (B) and collector (C). The base is located between the emitter and collector and is made of a lightly doped high resistance material. The collector surrounds the emitter region, making it almost impossible for electrons injected into the base region to escape without being collected, and the resulting common base gain value is very close to unity, thus giving the transistor a large common collector gain value.

The bipolar transistor Elements NPN and PNP differences in the structure and action

The order in which the P and N layers are arranged determines its type and operation of a bipolar transistor. BJTs are available in two types or polarities, known as PNP and NPN. An NPN transistor contains two semiconductor junctions that share a thin P doped region, while a PNP transistor contains two semiconductor junctions that share a thin N doped region. NPN is one of the two types of bipolar transistors. It consists of a P-doped semiconductor layer between two N-doped layers. The small current entering the base is amplified to produce a large collector and emitter current. When there is a positive potential difference, measured from the base to the emitter, the transistor is active. PNP transistors are built in exactly the opposite way. They also have the opposite action. They are active when there is no voltage at the base.