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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.

Electrical Symbols — Transistors

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.

Electrical Symbols

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.

Electrical Symbols — Transistors *

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, envBJT, PNP, env
BJT, NPN, envBJT, NPN, env
JFET, P, envJFET, P, env
JFET, N, envJFET, N, env
Transverse biased base, PNP, envTransverse biased base, PNP, env
Transverse biased base, PNPTransverse biased base, PNP
Transverse biased base, NPN, envTransverse biased base, NPN, env
Transverse biased base, NPNTransverse biased base, NPN
Ohmic, NPIN, envOhmic, NPIN, env
Ohmic, NPINOhmic, NPIN
Ohmic, NPIP, envOhmic, NPIP, env
Ohmic, NPIPOhmic, NPIP
Ohmic, PNIN, envOhmic, PNIN, env
Ohmic, PNINOhmic, PNIN
Ohmic, PNIP, envOhmic, PNIP, env
Ohmic, PNIPOhmic, PNIP
Unijunction FET, P, envUnijunction FET, P, env
Unijunction FET, PUnijunction FET, P
Unijunction FET, N, envUnijunction FET, N, env
Unijunction FET, NUnijunction FET, N
Darlington transistor, PNP, envDarlington transistor, PNP, env
Darlington transistor, PNPDarlington transistor, PNP
Darlington transistor, NPN, envDarlington transistor, NPN, env
Darlington transistor, NPNDarlington transistor, NPN
Transistor latch, envTransistor latch, env
Transistor latchTransistor 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

  • Open ConceptDraw DIAGRAM new document page.
  • Select libraries from Electrical Engineering section.

    Libraries from Electrical Engineering section

  • There are a few different ways to place an object into your drawing:

    • Click on an object and then click on the document, at the place you want the object to be inserted.
    • Perform a drag-and-drop from the library to your document.
    • Double click on an object’s icon in the library to place an object in the center of your document.
  • Select the Smart Connector tool Smart Connector. To connect elements using this tool, drag the connector from one connect dot to another.You can use Layers to place connections on different layers.
  • Result: Electrical Diagram.

    Electrical Diagram


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