The 1.5KE16CA is an electrical device manufactured and sold by Diotec, an electronics brand based in Germany. It is a unidirectional Transient Voltage Suppression Diode, with a peak pulse power of 1500 watts, a maximum reverse voltage of 16 volts, and a working temperature range between -55 and 150 degrees Celsius. It has a very fast response time, an ultra-low capacitance, and a high peak current capability. It is often used in automotive and industrial applications, such as protecting circuits from electrical disturbances, or controlling circuit current levels.