Symbols of Thyristors, Triacs and Diacs
The Thyristors are semiconductors of four caps that are activated by application of an impulse and are deactivated on not having supplied the current of work. They handle big powers. They are recognized by the English initials SCR.
The triac and diac are bidirectional semiconductor devices.
| Symbol | Description | Symbol | Description | |
|---|---|---|---|---|
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Thyristor SCR Silicon Controlled Rectifier + info |
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Thyristor SCS / Thyristor Tetrode Silicon Controlled Switch |
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Thyristor Schottky PNPN 4 layer |  |
Thyristor Schottky PNPN 4 layer | |
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Thyristor Schottky PNPN 4 layer |  |
Reverse conducting thyristor gate P channel controlled by cathode | |
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Reverse conducting thyristor gate N channel controlled by anode |  |
Turn-off thyristor gate P channel controlled by cathode | |
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Turn-off thyristor gate N channel controlled by anode |  |
Photo-Thyristor | |
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Diac Generic symbol + info |
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Diac | |
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Diac |  |
Trigger Diac Tree layer Diac |
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Triac Triode for Alternating Current + info |
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Sidac Silicon Diode for Alternating Current + info |
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SBS Silicon bilateral switch |
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SUS Silicon unilateral switch |
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Ditriac / Quadrac + info |
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Darlistor | |
Picture gallery of thirystors, triacs and diacs |
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