Diode Symbols

The diode is a semiconductor device that allows the current flow in one direction only.
Valve electronic with two electrodes called anode or plate and cathode electrode that uses the rectifying properties of a material type P and N semiconductor.

Symbology of Diodes

Symbol Description Symbol Description
Diode symbol, generic symbol Diode (rectifier diode)
Generic symbol
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  Diode symbol Diode (rectifier diode)
Generic symbol
Diode symbol Diode (rectifier diode)   Zener diode symbol Zener diode
Generic symbol
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Zener diode symbol Zener diode   Zener diode symbol Zener diode
Zener diode symbol Zener diode   Zener diode symbol Zener diode
Pin diode symbol Pin diode
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  Pin diode symbol Pin diode
Tunnel diode symbol Tunnel diode
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  Tunnel diode symbol Tunnel diode
Tunnel diode rectifier symbol Tunnel diode rectifier   SRD / Snap diode symbol Snap diode / SRD
Step Recovery Diode
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Varactor / Varicap diode symbol Varicap diode / Varactor / Tunnig diode
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  Varicap diode symbol Varicap diode / Varactor / Tunnig diode
Varicap diode symbol Varicap diode / Varactor   Variable voltage diode symbol Variable voltage diode
Schottky diode symbol Schottky diode
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  Schottky diode symbol Schottky diode
Voltage suppressor diode symbol Transient voltage suppression diode
Voltage suppressor diode
Thyrector / TVS diode
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  Voltage suppressor diode symbol Transient voltage suppression diode
Voltage suppressor diode
Thyrector / TVS diode
Constant Current diode symbols Constant current diode
Current-limiting diode - CLD
Current-regulating diode - CRD
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  Thermal diode / Temperature sensitive diode symbol Temperature sensitive diode
Thermal diode
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Laser diode symbol Laser diode
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  Magnetically sensitive diode symbol Magnetically sensitive diode
Photo-Diode / Photodiode symbol Photo-diode / Photodiode
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  Símbolo del foto-diodo bidireccional Bidirectional photo-diode
Photo-diode common cathode symbol Photo-diode common cathode   Photo-diode common cathode symbol Photo-diode common cathode
LED symbol Light-emitting diode - LED
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  LED bicolor symbol Light-emitting diode - LED
Bicolor, depends on the polarity
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Display LED, 7 segments symbol Display LED, 7 segments
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  LED display, alphanumeric symbol LED display, alphanumeric
e.g. letter A
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NPN breakdown diode symbol NPN breakdown diode   PNP breakdown diode symbol PNP breakdown diode
Triode PNPN symbol Triode PNPN
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Bridge Rectifier Symbols

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Graetz bridge / Diode bridge symbol Graetz bridge / Diode bridge
Double wave rectifier bridge with 4 Diodes
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  Graetz bridge symbol Graetz bridge
Double wave rectifier bridge with 4 Diodes
Full-wave rectifier stage Full-wave rectifier stage   Adjustable single-phase rectifier Adjustable single-phase rectifier
Three-phase rectifier symbol Three-phase rectifier
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  Adjustable three-phase rectifier Adjustable three-phase rectifier
Picture gallery of diodes
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