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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Triac; 800V; 25A; 50mA; THT; bulk; RD91
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STMicroelectronics 3346
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WeEn Semiconductor 3335
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Thyristor Surge Protection Devices (TSPD) 275V 100A
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TRIAC Logic - Sensitive Gate 600 V 1 A Through Hole TO-92-3
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Triacs Overvoltage Projected AC switch
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220V~250V 10uA DO-15 Diacs Trigger Diode ROHS
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