The ZSPT-Z3215B-10D-Z2 is a 1206 Phototransistor ROHS manufactured by Chau Light. It is a optically coupled NPN transistor in a compact surface mount package. The device is constructed with an infrared gallium arsenide LED chip optically coupled to an integrated NPN silicon phototransistor. It has a low-current operation to provide stable and reliable performance. The device features a fast recovery time, low threshold current, low capacitance, and low saturation voltage. It is RoHS compliant and has built-in ESD protection. The ZSPT-Z3215B-10D-Z2 is suitable for a wide range of applications such as 0-10v dimmers, proximity and level switches, and general-purpose switching applications.