The DLW21HN900SQ2L with 2 line common mode choke from Murata is a surface mount device designed to reduce electronic noise while allowing current or voltage signals to pass. It has a impedance of 90 Ohms at 100 MHz and a direct current rating (DCR) of 350 mOhms. It is capable of handling up to 330 mA of current. This device is made using a multi-layer construction of ferrite material that helps reduce the amount of interference from other electrical signals, making it ideal for use in automotive or industrial environments.