BTA208-800B,127

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Thyristors - TRIACs are three-terminal devices that provide bidirectional triggerable current control capability. The BTA208-800B,127 is a Thyristor-Triac specifically used to switch AC current in circuits. It is widely used in residential, industrial and commercial lighting, heating and other AC control applications.

The BTA208-800B,127 has a maximum junction temperature of 175°C and a non-repetitive surge current of 8A. It features a zero-crossing turn-on point and an exceptionally low leakage current that is critical in AC control applications. It also includes a built-in protection mode, which also limits its SCR current rating.

The key feature of BTA208-800B,127 is its ability to switch AC current in both directions with bidirectional control. This means it can be used to trigger the on/off action of an AC circuit by applying a pulse of electrical energy. The pulse can be changed to control the current flow in either direction. This is done either manually or by a programmed device, such as a relay or timer.

The BTA208-800B,127 works on the principle of two solid-state devices, an SCR and a TRIAC, connected in series. The SCR (Silicon Controlled Rectifier) is responsible for allowing current to flow in only one direction. The TRIAC (Triode Alternating Current) is responsible for allowing current to flow in both directions when triggered. The series connection of both devices forms the bidirectional current switch, which is triggered by applying a voltage or current pulse to it. This pulse of energy causes the SCR to close and lets the current flow in either direction depending on the control applied.

The BTA208-800B,127 is widely used in applications that require triggering AC current from a low-power source of control. Examples of such applications include switching motors, controlling home and commercial lighting, controlling heater output levels, and so on. Industrial grade solutions typically employ multiple units for controlling larger loads. Depending on the situation, thyristor-triac combinations with higher current ratings may be used for providing ultra-reliable and heavy duty switching.

The BTA208-800B,127 is an excellent choice for AC control applications thanks to its low leakage current, zero-crossing turn-on point and built-in protection mode. With its two-device series structure, it can switch AC current in either direction and can be activated by low-power pulse inputs. This makes it the ideal solution for residential, industrial and commercial AC switch controls.

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