For NMOS transistor, at channel pinch off The depth of the channel at

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For NMOS transistor, at channel pinch off The depth of the channel at the Drain becomes zero and the current saturates. The depth of the channel becomes non linear The width of the channel becomes very large (resulting in very large resistance and very low, practically zero, current) The depth of the channel at the Drain becomes zero and the MOS transistor enter the linear region.

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For NMOS transistor, at channel pinch off The depth of the channel at the Drain becomes zero and the current saturates . The depth of the channel becomes non linear The width of the channel becomes very large (resulting in very large resistance and very low, practically zero, current) The depth of the channel at the Drain becomes zero and the MOS transistor enter the linear region .