TN1205H-6G

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Thyristors are composed of four parts: an anode, a cathode, a gate and a body. The SCR (Silicon-Controlled Rectifier) is a type of thyristor that can be used as a bilateral switch. It can control the current of the circuit, be used to store energy, regulate the speed of electric motors and act as a timer. SCR Thyristors come in different forms, such as TN1205H-6G.

TN1205H-6G Application Field

TN1205H-6G is a general purpose, unidirectional SCR thyristor with a 6A gate current rating. It is suitable for controlling AC and DC power in mid-temperature range up to 175℃. This thyristor is widely used in various industrial and household devices, including motor speed controllers, LED lighting, welding machine power supplies, and electric tools.

TN1205H-6G Working Principle

When the gate voltage of the TN1212H-6G SCR thyristor is equal to or higher than the specified value, the device enters the conductive state and allows electric current to flow. This happens when there is a positive potential difference between the anode and the cathode. When the current reaches a certain level, which is often referred to as the latching current (or holding current), it stays in the conduction state. Once turned off, the device will not turn back on until the current is completely eliminated and the gate voltage is eliminated. To turn off the device, apply a negative voltage to the gate to reduce the forward voltage across the anode and the cathode, which allows the current to stop.

The TN1205H-6G SCR thyristors have the advantage of large amount of zero-crossing surplus, wide voltage regulation range and high power factor. It also has reverse breakdown voltage and high insulation voltage. This thyristor is suitable for operations that involve high current, large pulsating currents and frequent switching.

In conclusion, the TN1205H-6G SCR thyristor is ideal for controlling AC and DC power in mid-temperature range up to 175℃. It has several advantages, including large amount of zero-crossing surplus, wide voltage regulation range, high power factor, reverse breakdown voltage and high insulation voltage. With this thyristor, motor speed controllers, LED lighting, welding machine power supplies and electric tools can be easily and effectively controlled.

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