LFCW LTCC Ceramic Low/High Pass Filters Mini-Circuits LFCW LTCC Ceramic Low/High Pass Filters provide passband insertion loss and a good stopband rejection due to a strategically constructed layout with minimal interaction between components. The pass filters handle up to 3W RF input power and operate in a wide temperature range. These filters are housed in a tiny ceramic form factor with wraparound terminations. Mini-Circuits LFCW LTCC Ceramic Low/High Pass Filters are ideal for dense PCB layouts and with minimal performance variation due to parasitics.