The 1SMAF4750A with Zener Diodes SMAF RoHS is a surface mount diode manufactured by Jingdao. It is designed for use in high temperature, harsh environment applications. The diode features a glass-filled plastic casing and is composed of a pair of Zener diodes connected in series. The diode design is perfect for bias applications in circuit protection, voltage regulation, and current limiting circuits. Its operating temperature range is -55°C to 150°C, and its maximum power dissipation is 500mW. The RoHS compliance means that it does not contain lead, mercury, cadmium, chlorinated hydrocarbons, or other hazardous compounds.