MMx Zener Diodes Diotec Semiconductor MMx Zener Diodes feature sharp Zener voltage breakdown, low leakage current, and have AEC-Q101 qualified options available. These diodes are compliant with RoHS, REACH, and conflict materials, while MMx diodes with the -AQ suffix are AEC-Q101 qualified. Diotec Semiconductors MMx Zener diodes are ideal for voltage stabilization, regulators, commercial/industrial, and automotive-grade applications.