The CMZB43A from Toshiba is a Silicon Epitaxial Planar Zener Diode that is ideal to be used as a surge absorber. It has a dynamic resistance of 30 ohms at a test current of 7 mA and provides a peak pulse power of 1 W. This planar diode has a forward voltage of 1.2 V, a reverse current of 0.5 µA and a zener voltage of 43 V. It is available in a surface-mount package that measures 3.80 x 2.40 x 0.98 mm.
