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Electronic symbol

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Title: Electronic symbol  
Author: World Heritage Encyclopedia
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Subject: Battery (electricity), Circuit diagram, Insulated-gate bipolar transistor, Unijunction transistor, Capacitor
Collection: Electronic Engineering, Pictograms
Publisher: World Heritage Encyclopedia

Electronic symbol

Common circuit diagram symbols (US symbols)

An electronic symbol is a pictogram used to represent various electrical and electronic devices (such as wires, batteries, resistors, and transistors) in a schematic diagram of an electrical or electronic circuit. These symbols can (because of remaining traditions) vary from country to country, but are today to a large extent internationally standardized. Some symbols represent components (such as vacuum tubes) which ceased to be used routinely as newer technologies were introduced.


  • Standards for symbols 1
  • Gallery of common electronic symbols 2
    • Resistors 2.1
    • Capacitors 2.2
    • Transistors 2.3
    • Diodes 2.4
    • Vacuum tubes 2.5
    • Switches 2.6
    • Relays 2.7
    • Circuit Breakers 2.8
    • Transformers 2.9
    • Miscellaneous 2.10
  • See also 3
  • References 4
  • External links 5

Standards for symbols

There are several national and international standards for graphical symbols in circuit diagrams, in particular:

  • IEC 60617 (also known as British Standard BS 3939)
  • IEEE Std 91/91a
  • ANSI standard Y32 (also known as IEEE Std 315)
  • Australian Standard AS 1102

Different symbols may be used depending on the discipline using the drawing. For example, lighting and power symbols used as part of architectural drawings may be different from symbols for devices used in electronics. National and local variations to international standards also exist.

Gallery of common electronic symbols

Symbols shown are typical examples, not a complete list. [1]





Vacuum tubes



Circuit Breakers



See also


  1. ^ Circuit Symbols for all Electronic Components. Talking Electronics, 2013. Retrieved 01 Apr 2015.

External links

  • International standard IEC 60617 DB Graphical symbols for diagrams
  • Electrical Schematic Symbols
  • Circuit Symbols of Electronic Components
  • Electrical & Electronic Drawing Symbols
  • Collection of Electronic Symbols
  • Circuit Schematic Symbols
  • Collection of Electrical and Electronic Schematic Symbols
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