The R772 from Qualcomm is a SAW Resonator with Frequency 433.81 / 434.06 MHz, Centre Frequency 433.81 / 434.06 MHz, Insertion Loss 1.3 to 1.7 dB, Capacitance 2.5 pF, Quality Factor Unloaded 7500 to 11600. Tags: Surface Mount, SAW Resonator. More details for R772 can be seen below.