The ZMM20 with Zener Diodes LL-34 RoHS manufactured by Semtech is a dual bidirectional TVS protection device designed to protect sensitive components in the telecommunications, industrial, and automotive markets. It features a Zener diode rated at 4.7V and a breakdown voltage of 20V providing bidirectional protection against surges, transients, EFT, and inductive load switching. The device is packaged in a RoHS-compliant, halogen-free, low-profile SOT-23 package. This device is designed to provide reliable surge protection for I/O circuits, as well as to suppress conducted noise on common-mode and differential-mode lines.