300A high current tube, tube can pass 40A current, No input Voltages limitation. (Guaranteed reverse Voltages belows 40V) Small appearance easy to understand operation; several types available to meet different customer needs Only need to be connection in series to the positive terminals of the circuit, no need to the negative terminals. 1 milliohm on-resistance, small loss, low heat generation. Fast response to reverse polarity within 2US, input and output equivalent to diode. Detect the output Voltages is the input immediately shut down the output, detection value of millivolt level, the corresponding speed is very fast, Manufacturer: Akfldms