Thyristors

A thyristor is a type of semiconductor device that acts like a switch, allowing energy to flow in one direction only. It is a three-terminal electronic device composed of four layers of alternating P-type and N-type material that can operate in four different states: off, forward blocking, reverse blocking, and forward conducting. In its off state, the thyristor does not conduct current; in its forward blocking state, it allows current to flow in the forward direction only; in its reverse blocking state, it allows current to flow in the reverse direction only; and in its forward conducting state, it allows current to flow in either the forward or reverse direction. Thyristors can be used in many applications such as power control, over-current protection, motor speed control, and lighting dimmers.
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BTB12-800SW


25mA 800V 1 TO-263 TRIACs ROHS
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Triacs BTA316-800CTQ/SIL3P/STANDARD MARKING HORIZONTAL, RAIL PACK
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Triacs AC Thyristor Triac Power Switch
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BT138-600D


TO-220 TRIACs ROHS
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JSMSEMI 276
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SCRs 400V 25A SCR TO220 ISO
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Triacs 400V 40A 100(1-3)Ma
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Littelfuse 175
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