Electrical Symbols — Transistors
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.
Pic. 1. Transistors Library
ConceptDraw DIAGRAM is a powerful software for creating professional looking electrical diagram quick and easy. For this purpose you can use the Electrical Engineering solution from the "Engineering" area of ConceptDraw Solution Park.
Electrical Engineering Solution for ConceptDraw DIAGRAM provides the stencils libraries of ready-to-use predesigned 926 vector symbols, templates and samples that make your electrical drawing quick, easy and effective.
26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.
Pic. 2. Electrical Engineering symbols
Electrical diagram software will assist you in drawing your electrical diagrams with minimal effort and makes it very easy for beginners.
Electrical symbols and smart connectors help present your electrical drawings, electrical schematic, wiring diagrams and blue prints.
Pic. 3. Electrical Symbols — Transistors
Most of the electrical symbols can be changed in their appearance, styles and colors according to users' requirements. Electrical symbols are used to represent various electrical and electronic devices in a schematic diagram of an electrical or electronic circuit.
The following table lists some transistors electrical symbols in our electrical diagram software.
| Symbol |
Meaning |
| Electrical Symbols — Transistors |
 | BJT, PNP, env |
 | BJT, PNP |
 | BJT, NPN, env |
 | BJT, NPN |
 | JFET, P, env |
 | JFET, P |
 | JFET, N, env |
 | JFET, N |
 | Transverse biased base, PNP, env |
 | Transverse biased base, PNP |
 | Transverse biased base, NPN, env |
 | Transverse biased base, NPN |
 | Ohmic, NPIN, env |
 | Ohmic, NPIN |
 | Ohmic, NPIP, env |
 | Ohmic, NPIP |
 | Ohmic, PNIN, env |
 | Ohmic, PNIN |
 | Ohmic, PNIP, env |
 | Ohmic, PNIP |
 | Unijunction FET, P, env |
 | Unijunction FET, P |
 | Unijunction FET, N, env |
 | Unijunction FET, N |
 | Darlington transistor, PNP, env |
 | Darlington transistor, PNP |
 | Darlington transistor, NPN, env |
 | Darlington transistor, NPN |
 | Transistor latch, env |
 | Transistor latch |
The transistor is the key active component in practically all modern electronics. Many consider it to be one of the greatest inventions of the 20th century. Its importance in today's society rests on its ability to be mass-produced using a highly automated process (semiconductor device fabrication) that achieves astonishingly low per-transistor costs.
How to Create an Electrical Diagram Transistors Elements Library
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The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of transistor used for amplifying or switching electronic signals.
Although the MOSFET is a four-terminal device with source (S), gate (G), drain (D), and body (B) terminals, the body (or substrate) of the MOSFET is often connected to the source terminal, making it a three-terminal device like other field-effect transistors. Because these two terminals are normally connected to each other (short-circuited) internally, only three terminals appear in electrical diagrams. The MOSFET is by far the most common transistor in both digital and analog circuits, though the bipolar junction transistor was at one time much more common.
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Picture: Electrical Symbols — MOSFET
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