NJS Thyristors & Triacs

NJS can supply many types of Silicon Controlled Rectifiers and Triacs. Devices are available in assorted packages, currents, and voltages.

Thyristors (SCR) featuring immunity to surges and transients in static states and commutations, our silicon-controlled rectifiers (SCR), also known as thyristors, are ideal for single- and three-phase power line networks, even in harsh environments. In addition to AC, DC and capacitive ignitor circuits, these unidirectional switches are found in high-voltage industrial circuits as well as automotive equipment and all other segments where electromechanical relays are not operative or unreliable.

SCRs are unidirectional devices and conduct load current in only one direction. SCRs are triggered by a positive trigger current into the gate. Low power applications include circuit breakers like GFCI and engine ignition circuits. High power applications include motor control, inrush current protection, battery chargers, SMPS and UPS. njsemi SCRs have a current range from 0.8A to 126A, voltage range from 200V to 1600V and are available in a variety of industry standard, SMD and through-hole power packages.

Triacs are current-controlled, bidirectional power latches, designed to control AC-mains loads. Triacs are mainly used in home appliances, electrical (water) heaters, lamp dimmers and motor control applications. WeEn triacs have a current range from 0.2A to 45A and voltages are 600V, 800V and 1000V. They are available in a variety of industry standard, SMD and through-hole power packages. Basically, a triac can be thought as two SCRs connected in parallel and in opposite directions with a common gate terminal. Unlike the SCR, the triac can conduct current in either direction when it is triggered on, depending on the polarity of the voltage across its A1 and A2 terminals.

Fast thyristors

Fast thyristors are designed for high-speed, high-power applications. They are capable of rapidly cutting or switching current in a circuit, even at high current and voltage levels. They are often used in high-power circuits, such as power converters and voltage regulators.

Standard thyristors

Standard thyristors are designed for low-speed, low-power applications. They can cut or switch the current in a circuit, but they are not designed to handle high current or voltage levels. They are often used in low-power control and power circuits.

Features

• Solid state switches used to control the flow of electrical current
• Often used for circuit protection in home appliance, electrical tool and outdoor equipment applications
• Wide selection of thru-hole and surface mount options available