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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SCRs 400V .8A 5 UA Sen SCR
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Triacs THYR AND TRIACS
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NXP 3507
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TRIAC Alternistor - Snubberless 600 V 200 mA Through Hole TO-92-3
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STMicroelectronics 3481
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Littelfuse Sidacs 150V DO-214AC 2L
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4mA 600V 1 SOT-23 TRIACs ROHS
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Kang Yang 3472
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NXP Semiconductors Triacs RAIL TRIAC
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ON Semiconductor SCRs THY .8A 600V SCR
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ON Semiconductor 3457
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Triac; 800V; 1A; TO92; Igt: 3/7mA; Ifsm: 12.5A; 4Q; sensitive gate
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