The G-pole voltage (gate voltage) of the MOS tube depends on the specific MOS tube type and circuit design. In general, for power MOS tubes, the G-pole voltage is usually between 2 and 4V.
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However, for some specific models of MOS tubes, the G-pole voltage may be different. For example, Vishay's 2N7002K MOS tube has a Vgs (gate source voltage) that can withstand up to 20V.
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Therefore, when applying G pole voltage to the MOS tube, it is necessary to refer to the specific MOS tube data manual or circuit design requirements to ensure that the voltage value does not exceed the tolerance range of the MOS tube, so as to avoid damage or performance degradation of the MOS tube.
The G-pole voltage of MOS tube depends on its design process and material, under normal circumstances, the G-pole voltage of ordinary MOS tube can withstand tens of volts, and the high-voltage MOS tube can withstand higher voltage. In practical application, it is necessary to select the appropriate device according to the circuit requirements, and design the protection circuit reasonably to prevent the device from being damaged by high voltage. If a higher G-pole voltage is required, a circuit such as cascade can be used to achieve it. In short, reasonable circuit design and device selection are the key to ensure that the G-pole voltage of MOS tube is not limited.