Diode Symbols
The diode is a semiconductor device that allows the current to flow in one direction only.
It has two electrodes called anode or plate and cathode, it uses the rectifying properties of the union between type P and N materials of a semiconductor.
This symbols can be represented inside a circle.
| Symbol | Description | Symbol | Description | |
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Diode (rectifier diode) Generic symbol + Info |
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Diode (rectifier diode) Generic symbol |
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Diode (rectifier diode) |  |
Zener diode Generic symbol + Info |
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Zener diode |  |
Zener diode | |
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Zener diode |  |
Zener diode | |
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Pin diode + Info |
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Pin diode | |
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Tunnel diode + Info |
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Tunnel diode | |
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Tunnel rectifier diode |  |
Snap diode / SRD Step Recovery Diode + Info |
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Varicap diode / Varactor / Tunnig diode + Info |
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Varicap diode / Varactor / Tunnig diode | |
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Varicap diode / Varactor |  |
Variable voltage diode | |
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Schottky diode + Info |
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Schottky diode | |
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Transient voltage suppression diode Voltage suppressor diode Thyrector / TVS diode + Info |
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Transient voltage suppression diode Voltage suppressor diode Thyrector / TVS diode |
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Constant current diode Current-limiting diode - CLD Current-regulating diode - CRD + Info |
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Temperature sensitive diode Thermal diode + Info |
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Laser diode + Info |
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Laser diode | |
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Photo-diode / Photodiode + Info |
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Bidirectional photo-diode | |
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Photo-diode common cathode |  |
Photo-diode common cathode | |
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Light-emitting diode - LED + Info |
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Light-emitting diode - LED Bicolor, depends on the polarity + Info |
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Tri-colour light emitting diode - LED |  |
Magnetically sensitive diode | |
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Vacuum tube diode + Info |
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Triode PNPN + Info |
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NPN breakdown diode |  |
PNP breakdown diode | |
Bridge Rectifier Symbols |
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Graetz bridge / Diode bridge Double wave rectifier bridge with 4 Diodes + Info |
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Graetz bridge Double wave rectifier bridge with 4 Diodes |
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Full-wave rectifier stage |  |
Adjustable single-phase rectifier | |
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Three-phase rectifier + Info |
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Adjustable three-phase rectifier | |
LED display Symbols |
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LED display, 7 segments + Info |
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LED display, alphanumeric e.g. letter A + Info |
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Alphanumeric display, 14 segments | |||
Picture gallery of diodesDownload symbols |
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