The 1.5KE250A-R0 is a rectifier diode made by Taiwan Semiconductor. It is designed to protect circuits from voltage spikes and transients. The diode has a maximum reverse voltage of 250 V, a maximum peak surge current of 1500 A, and a maximum average forward current of 180 mA. It is designed to be used in applications such as AC/DC converters, frequency changers, power supplies, and power switching applications. The diode is constructed using a glass-passivated junction technology, to provide reliable operation and long-term stability.