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 Logic - Sensitive Gate 400 V 8 A Surface Mount TO-252, (D-Pak)
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6mA 16A TO-252(DPAK) TRIACs ROHS
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Thyristors - TRIACs Two-way thyristor 600V TO-252-3 RoHS
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STMicroelectronics SCRs 12 Amp 600 Volt
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NXP Semiconductors Triacs 800V 1A
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Littelfuse Triacs 600V 4A Sensing 3-3-3-3mA
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SCRs 600V 6A 15mA TO251 High Temp 150c SCRs
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STMicroelectronics Triacs Trisil Telecom SMB 100A 72V to 310V
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Diode Standard 600 V 15.9A Through Hole TO-220AB-L
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