The 07D201K part with Varistors 170V 355V 1.2KA Through Hole RoHS manufactured by COV is a device consisting of two power semiconductor layers, separated by an insulating layer. It has 170 volts (V) of maximum breakdown voltage and 355V of rated voltage with 1.2kA of current. The part is constructed with through hole RoHS technology, which ensures better connectivity and corrosion resistance. It can be used in various applications such as high frequency power, circuit protection, and motor control.