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 600V .8A 5uA
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Triacs RAIL-THYR AND TRIACS
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WeEn Semiconductor 1720
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BTB12-600CWRG


Triac; 600V; 12A; 35mA; THT; Snubberless™; tube; TO220AB
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50mA 800V 1 TO-3P TRIACs ROHS
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Weida Semiconductor 1713
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BTB04-600CW


35mA 600V Two-way thyristor TO-252 TRIACs ROHS
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P1500SCLRP


Thyristor Surge Protection Devices (TSPD) 500A 140V
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TRIAC Logic - Sensitive Gate 600 V 800 mA Through Hole TO-92-3
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STMicroelectronics Triacs 4.0 Amp 600 Volt
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P2600SALRP


Thyristor Surge Protection Devices (TSPD) 50A 220V
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Sidacs 250V DO-214AC 2L
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Littelfuse 1691
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