ACTT4S-800E,118

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Thyristors - TRIACs

A TRIAC (Triode for Alternating Current) is an electronically controlled two-terminal AC solid-state switching device, commonly known as a thyristor. It is widely used to control or switch AC power, in the same way as a mechanical switch, but offers the advantages of smooth digital control, higher current carrying capability and faster switching speeds. In the past, TRIACs have been used in many applications from ovens to light dimmers to AC power controllers. Today, thanks to advances in semiconductor technology, TRIACs are being used for a broad range of applications, from LED lighting to motor control to power supply design.

The ACTT4S-800E is a new type of TRIAC from Artesyn Technologies. This TRIAC was designed to provide improved thermal management, a smaller footprint, and faster switching speeds than the traditional TRIACs found in the market. It has a maximum power dissipation of 800 watts, a maximum on-state current of 40 amps, and a switching frequency of up to 1500 KHz.

The ACTT4S-800E is ideal for applications where high current switching is required, such as motor control, AC power control, and LED lighting. It is also suitable for use in power supply design, where it can provide improved efficiency and reliability over traditional TRIACs. The high switching frequency allows the ACTT4S-800E to be used in applications requiring fast transient response times, such as high-power industrial applications.

The ACTT4S-800E works by allowing limited current to flow through it when a voltage is applied across its two terminals. The current is then increased gradually as the voltage is increased. Once the current reaches the maximum on-state current, the device enters a “latched” state, and the current remains constant until the voltage is removed. The device can be further controlled by applying a “triggering” voltage to a third terminal. This causes the TRIAC to switch on, allowing current to flow, or switch off, preventing current from flowing.

The ACTT4S-800E is an excellent choice for applications where high current, fast switching, and improved thermal management are important. Its low thermal resistance and fast switching speeds make it an ideal choice for power supply design and motor control, while its small footprint and high current carrying capacity make it suitable for LED lighting and other high-power applications.

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