Electrical Symbols — Semiconductor Diodes
In electronics, a diode is a two-terminal electronic component that conducts primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance to the flow of current in one direction, and high (ideally infinite) resistance in the other. A semiconductor diode is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. Today, most diodes are made of silicon, but other semiconductors such as selenium or germanium are sometimes used.

Pic. 1. Semiconductor Diodes 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 — Semiconductor Diodes
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 semiconductor diodes electrical symbols in our electrical diagram software.
| Symbol |
Meaning |
| Electrical Symbols — Semiconductor Diodes |
 | Diode, env |
 | Diode |
 | Diode, reverse blocking, env |
 | Diode, reverse blocking |
 | Diode, reverse conducting, env |
 | Diode, reverse conducting |
 | Tunnel diode, env |
 | Tunnel diode |
 | Zener diode, env |
 | Zener diode |
 | Backward diode, env |
 | Backward diode |
 | Varactor, env |
 | Varactor |
 | Four layer diode, env |
 | Four layer diode |
 | LED, env |
 | LED |
 | Photo-diode, env |
 | Photo-diode |
 | Breakdown diode, uni-directional, env |
 | Breakdown diode, uni-directional |
 | Breakdown diode, bi-directional, env |
 | Breakdown diode, bi-directional |
A semiconductor diode's current–voltage characteristic can be tailored by selecting the semiconductor materials and the doping impurities introduced into the materials during manufacture. These techniques are used to create special-purpose diodes that perform many different functions. For example, diodes are used to regulate voltage (Zener diodes), to protect circuits from high voltage surges (avalanche diodes), to electronically tune radio and TV receivers (varactor diodes), to generate radio-frequency oscillations (tunnel diodes, Gunn diodes, IMPATT diodes), and to produce light (light-emitting diodes). Tunnel, Gunn and IMPATT diodes exhibit negative resistance, which is useful in microwave and switching circuits.
How to Create an Electrical Diagram Using Semiconductor Diodes Library
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ConceptDraw DIAGRAM diagramming and vector drawing software enhanced with Electrical Engineering Solution from the Industrial Engineering Area of ConceptDraw Solution Park offers you powerful tools and libraries with incredibly large quantity of predesigned electrical symbols as electrical schematic symbols for easy designing professional looking Electrical Schematics.
Picture: Electrical Symbols, Electrical Schematic Symbols
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In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.
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.
Picture: Electrical Symbols — Rotating Equipment
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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.
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.
Picture: Electrical Symbols — MOSFET
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Electrical Engineering Solution used together with ConceptDraw DIAGRAM drawing facilities makes short a work of drawing various electrical and electronic circuit schemes. A library of vector objects composed from symbols of Analog and Digital Logic elements of electric circuit includes 40 symbolic images of logic gates, bistable switches of bi-stable electric current, circuit controllers, amplifiers, regulators, generators, etc. All of them can be applied in electronic circuit schemes for showing both analog and digital elements of the circuit.
Electrical Engineering Solution used together with ConceptDraw DIAGRAM drawing facilities makes short a work of drawing various electrical and electronic circuit schemes. A library of vector objects composed from symbols of Analog and Digital Logic elements of electric circuit includes 40 symbolic images of logic gates, bistable switches of bi-stable electric current, circuit controllers, amplifiers, regulators, generators, etc. All of them can be applied in electronic circuit schemes for showing both analog and digital elements of the circuit.
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Electrical Diagram Symbols F.A.Q.
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Electronic components have two or more electrical terminals (or leads) aside from antennas which may only have one terminal. These leads connect to create an electronic circuit with a particular function (for example an amplifier, radio receiver, or oscillator). Basic electronic components may be packaged discretely, as arrays or networks of like components, or integrated inside of packages such as semiconductor integrated circuits, hybrid integrated circuits, or thick film devices.
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.
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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.
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.
Picture: Electrical Symbols — Transistors
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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.
Picture: Electrical Symbols — Resistors
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Picture: Electrical Symbols — Delay Elements
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