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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Littelfuse SCRs Sen SCR 400V .8A 200uA
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SCRs 800V 12A
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Triacs SENSITIVE GATE
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Kang Yang 1286
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Thyristor Surge Protection Devices - TSPD Trisil for telecomm equipment protection
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STMicroelectronics 1284
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STMicroelectronics Triacs 4A TRIACS
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Thyristor; 600V; 2.5A; 4A; 50uA; Package: bulk; THT; TO126; Ifsm:40A
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CDIL 1270
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TRIAC Logic - Sensitive Gate 200 V 4 A Through Hole TO-225AA
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Littelfuse SCRs 400V .8A 200uA Sensing
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