BTA25-400B

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Thyristors, also known as silicon controlled rectifiers (SCRs), are three-terminal semiconductor switching devices often used in power control and switching applications. TRIACs, as its name suggests, are a three-terminal AC switch often used in a variety of switching and control applications, in particular, those that require fast on/off switching and accurate gate current control.The BTA25-400B is a 400V sensitive thyristor/triac device. It is a non-sensitive gate device and its gate current (IG) range is typically 0.5 to 10mA. Its blocking voltage is rated up to 400V and its on-state current (IT) is typically 25A. Its turn-on/turn-off times are typically between 500 and 2000µs. This device is ideal for applications such as AC motor speed control and lighting control.The primary application for the BTA25-400B device is for snubberless AC power switch and surge suppression. It can be used in applications such as a short-circuit protection and failsafe over-voltage protection. This device is also suitable for applications such as PWM motor control and switching AC power circuits. Other applications include induction heaters, AC loads, switching of transformers, thermostats and thermocouples.The working principle of the BTA25-400B is quite simple. Using the gate current IG, a thyristor is triggered into the ON state. This activates the thyristor\'s junction and acts as a switch, allowing current to flow through the device. When the current reaches a certain level, the thyristor trips and turns off the current. The triac behaves exactly like a thyristor, but it is triggered by either positive or negative current. This enables a triac to be used in applications involving AC waveforms.The BTA25-400B is a very versatile and reliable device, making it ideal for a variety of applications. It is capable of switching both AC and DC power, and it is suitable for applications that require fast on/off switching and accurate gate current control. This device is also capable of providing snubberless AC power switch and surge suppression. It is an excellent option for applications that require high power switching and accuracy.

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