This device is a 4 line EMI filter array for wireless applications. Greater than -30 dB typical attenuation is obtained at frequencies from 800 MHz to 5.0 GHz. The NUF4000MU has a typical cut-off frequency of 105 MHz. This UDFN package is specifically designed to enhance where space and height is a premium. It also offers ESD protection-clamping transients from static discharges. ESD protection is provided across all capacitors.