Offered in SOT-89/-223/-23 packages, CPC39xx N-channel depletion-mode MOSFETs are available with voltage ratings that range from 60–800 V. These normally on (NO) FETs, with max Gate-to-Source threshold voltages from -2.9 to -3.9 V, can conduct current without any gate voltage. Applications include voltage pre-regulator circuits, cold start voltage feed, current sources, constant current loads, LED drive circuits, NO switches, ignition modules, converters, and power supplies.