Bipolar Transistors

Bipolar Transistors are a solid state, three-pin devices made from three layers of silicon. A bipolar transistor 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

Bipolar transistors are constructed 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.

How do bipolar transistors work?

Bipolar transistors have 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.

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.

They are also available as;

  • Digital transistors - are made of a semiconductor material, usually silicon, which conducts the current (or electricity) with little resistance. They also tend to have at least three terminals for easy connection to an external circuit.
  • UJT transistors - constructed of a bar of lightly dope N type silicone with a small piece of heavily doped P type material attached to one side. Since the silicon bar is lightly dope it has very high resistance.

Applications of bipolar transistors?

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).


...
Voir plus Voir moins

Filtres

Afficher 4581 - 4600 des 4603 produits
Nombre de résultats par page
Description Prix Transistor Type Maximum DC Collector Current Maximum Collector Emitter Voltage Package Type Mounting Type Maximum Power Dissipation Transistor Configuration Maximum Collector Base Voltage Maximum Emitter Base Voltage Maximum Operating Frequency Pin Count Number of Elements per Chip Dimensions Minimum Operating Temperature
N° de stock RS 781-3967
Référence fabricantBCW65ALT1G
0,04 €
Each (On a Tape of 200)
Unité
NPN 800 mA 32 V SOT-23 Surface Mount 225 mW Single 60 V dc 5 V 100 MHz 3 1 3.04 x 2.64 x 1.11mm -
N° de stock RS 803-1122
Référence fabricantBC556ATA
0,067 €
Each (In a Pack of 200)
Unité
PNP 100 mA 65 V TO-92 Through Hole 500 mW Single -80 V -5 V 10 MHz 3 1 5.2 x 4.19 x 5.33mm -
N° de stock RS 2508963454
Référence fabricantNTE385
11,52 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963527
Référence fabricantNTE2302
7,27 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963555
Référence fabricantNTE6402
1,54 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508956939
Référence fabricantNTE159
1,18 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963410
Référence fabricantNTE379
10,18 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508957516
Référence fabricantNTE123AP-5
5,16 €
1 Pack of 5
Paquet(s)
- - - - - - - - - - - - - -
N° de stock RS 2508963274
Référence fabricantNTE290A
1,52 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508957386
Référence fabricantNTE397
3,12 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508962861
Référence fabricantNTE53
12,22 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508962934
Référence fabricantNTE101
9,49 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2509692352
Référence fabricantNTE2347
6,16 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963561
Référence fabricantNTE6409
8,63 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508962439
Référence fabricantNTE2324
9,94 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508956771
Référence fabricantNTE123
1,54 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508962978
Référence fabricantNTE180
8,03 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508956721
Référence fabricantNTE102A
8,62 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963404
Référence fabricantNTE378
2,77 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2508963202
Référence fabricantNTE283
11,33 €
Each
Unité
- - - - - - - - - - - - - -