90N03是大功率场效应管,也叫MOS管。优点是导通电阻极低,只有千分之五欧姆,开关响应速度快,负载电流大,可达80安培,但只能用于30伏以下的低压电路.
90n03 is a high-power FET, also known as MOS transistor. The advantage is that the on resistance is very low, only 5 / 1000 ohm, the switching response speed is fast, the load current is large, up to 80 amps, but it can only be used in low-voltage circuits below 30 volts