BTA04-700SRG

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Thyristors have widespread application fields. One of them is TRIAC. TRIAC stands for TRIode AC switch, referred to as an AC self-commutative thyristor. BTA04-700SRG is a representative of TRIAC thyristors that are widely used in AC power control.

BTA04-700SRG consists of a two PN junction which are connected in series. During normal operation, it blocks the current flow in one direction yet allow current to flow in both directions. When the current exceeds the gate firing, it will reach a low impedance state and allow continuous current output. It can be widely used in lighting control, motor speed control and other fields.

The working principle of BTA04-700SRG is based on the structure, when the positive and negative voltage of the AC input reaches threshod voltage, the current will flow through PN junction and form a forward bias of both PN junction. At this time, controlled gate is connected to the AC switch, and the bias voltage keeps at the PN junction, so the current can continue to flow until the PN junction breakdown to form a low impedance.

Once the low impedance state is reached, the current will flow from outside to the internal PN junction and skip through the channel to the output channel, thereby achieving the purpose of power output. What\'s more, since the TRIAC can pass and control current in both directions, it has wide applications in AC power control.

In addition, due to its small size and high power output, BTA04-700SRG is widely used in lamp dimming, motor speed control and other fields. Therefore, the application and principle of BTA04-700SRG is becoming more and more popular.

In conclusion, BTA04-700SRG is a self-commutative AC thyristor with two PN junction connected in series. Its working principle is based on the biasing of the PN junction and the controlled excitation of the output channel. After the TRIAC is switched on, the AC voltage is applied from both directions and the current will pass through the output channel to achieve the purpose of power transmission. It has great application value in lighting control and motor speed control due to its low cost, small size and high power output.

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