The RO3101C from Murata is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.2 to 2.5 dB, Capacitance 2.6 pF, Quality Factor Loaded 1200. Tags: Surface Mount, SAW Resonator. More details for RO3101C can be seen below.