BFCN LTCC Bandpass Filters Mini-Circuits BFCN LTCC Bandpass Filters are constructed using multilayer ceramic technology to achieve a miniature size and high repeatability. Wrap-around terminations minimize variations in performance due to parasitics. Mini-Circuits BFCN LTCC Bandpass Filters offer low insertion loss and good rejection at the band-reject edges. The LTCC construction provides a rugged package for tough environments, including high humidity and high-temperature extremes.