2N6402G

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A thyristor - a solid-state semiconductor device - is a type of power semiconductor that is used to control electric power. They are the most widely used kind of power semiconductor and are used in a wide variety of applications, from power supplies and motor controllers to distributed control systems and digital audio amplifiers. A Thyristor – SCR (2N6402G) is a device that is commonly used in power applications to provide a convenient means of controlling power flows. The main feature of this device is that it offers reliable operation at high switching speeds with low input power.

The 2N6402G thyristor is a two-junction thyristor with a 40 Amp, zero-crossing rectifier rating. It has an operating temperature range of -40 to 130 degrees Celsius and an on-state voltage drop of 1.1V. The SCR is suited for microprocessor, logic and industrial-control applications in the frequency range of 1KHz to 2MHz. This 2N6402G has been designed for applications such as silent-switching power supplies, motor controllers, and converter applications like three-phase rectifiers, DC-AC and AC-DC inverters, and HVDC.

The 2N6402G application field is mainly used in controllable power converters and inverters, such as DC-DC, AC-DC, and DC-AC power converters. This 2N6402G is also used as a current-limiting thyristor, providing high-current, phase-angle control when used as an armature or field controller in loads of DC motors. It also finds several applications in electronic ballasts, lighting control, motor-speed control, and power factor-correction applications.

The 2N6402G working principle is based on the fact that a thyristor can be turned on or off depending on the biasing conditions of the device. The device, when biased forward and the gate being applied with a short pulse, is turned on and remains in that state until the current through the device reaches zero. Conversely, when the gate is not triggered, the device is kept in the OFF state. This behavior of the 2N6402G is used to control the current and voltage flow in the electronic circuits.

The 2N6402G has an on-state voltage drop between 1.1V and 1.2V, and an on-state current between 40A and 45A (typical) at temperatures between -40 to 125 degrees Celsius. It is a zero-crossing rectifier, with a 200V blocking voltage. The turn-on and turn-off times for the 2N6402G are typically 30ns and 150ns, respectively, making it suitable for high-frequency applications. This 2N6402G is a symmetrical gate-controlled thyristor and features gate reverse-criticality, which protects the device from any over-voltage damage and ensures reliable operation in high frequency circuits.

When used for power control, the 2N6402G is well-suited for a variety of applications, from low-power switching to high-power AC/DC converters. In addition, the 2N6402G offers a wide operating temperature range and good device robustness. The device is capable of withstanding large transient over-voltages and over-currents, making it suitable for demanding industrial control applications.

In conclusion, the 2N6402G is a two-junction thyristor with a 40 Amp, zero-crossing rectifier rating. It is suitable for a variety of applications, from power supplies and motor controllers to distributed control systems and digital audio amplifiers. The 2N6402G working principle is based on its biasing conditions, which allow it to be turned on and off depending on the given signal. This device features gate reverse-criticality, ensuring reliable operation in high-frequency circuits. In addition, it is capable of withstanding large transient over-voltages and over-currents, making it an ideal choice for power control applications.

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