The MM3Z4V7 with SOD-323 Zener Diodes ROHS is a transistor made by SLKORMICRO Corporation. It is a 5.6 Volt Zener encapsulated in a small, hermetically sealed glass package. It is designed to provide reverse, bidirectional, or voltage regulation with overvoltage protection. The package also features internal protection, low power requirements, high reliability, and low thermal resistance. This part is designed for use in a wide variety of electronic applications, including vCOs, PDAs, cellular phones, computers, and other electronic devices.