The Westcode W1524LC300 is a hockey-puck rectifying diode with a 3kV rating and 1.52kA current rating. It is designed to be used in high voltage applications, capable of handling up to 3kV of voltage. It comes in a W4-100A243 package, with dimensions of 4 inches in diameter and ½ inch in depth. This diode has a nearly instantaneous switching time, making it ideal for use in applications such as lighting, invertors, power supplies, and other electronic components.