The ZM4739A with Zener Diodes LL-41 RoHS and manufactured by Semtech is an electronic part that is designed for use in communications, automotive, computing, and consumer applications. It is a surface-mount, dual-diode, three-terminal device. It features a RoHS-compliant, low-leakage, SOD-123 package with a 6.3V Zener voltage rating and a breakdown voltage rating of 4.7V. It also features an operating temperature range of -40°C to +125°C, a power dissipation rating of 500mW, a maximum leakage current rating of 10µA, and a maximum reverse voltage rating of 30V. The ZM4739A also provides excellent breakdown voltage regulation, low-leakage current, and surge withstand capability.