N-channel depletion mode small-signal MOSFET for industrial and consumer applications in SOT-223 package The N-channel depletion mode MOSFET in SOT-223 package features VDS 600 V and RDS(on) of 60 Ohm.With an optimal price/performance ratio and small footprint packages out small signal and small power MOSFETs are the best fit for a wide range of applications and circuits. These include low voltage drives, linear battery charger, battery protection, load switches, DC-DC converters, reverse polarity protection and many more.