The SDCW1608S-2-900TF with Common Mode Chokes / Filters 0603 RoHS is an electronic part manufactured by Sunlord. It is a common mode choke, also known as a filter, that is RoHS (Restriction of Hazardous Substances)-compliant. The part is 0603 in size and is designed to suppress noise in high frequency signals while still allowing the signals to pass through. It is used to reduce interference, such as from ignitions and radio frequencies, in a variety of equipment, such as cell phones, computers, televisions, and other electronic devices.