The MKZ5V6,LM from Toshiba is a Silicon Epitaxial Planar Zener Diode that has been designed for voltage surge protection applications. It has a peak reverse voltage of up to 6 V and a reverse current of less than 1 µA. This zener diode has a peak pulse power of 155 W and a peak pulse current of 12 A. It is available in a surface-mount package that measures 2.9 x 1.3 x 0.9 mm.