The NTE54001 is a THT (Through-Hole Technology) Type 400V, 55A, 40mA Thyristor from the NTE family. It is designed to control power in AC and DC circuits, and its TO220 package allows for various mounting and heat-sinking techniques. The maximum peak off-state voltage of the device is 400V. The current use in the on state can extend up to 55A, while the minimum off-state current is 40mA. It is UL and cUL approved.