The R1952 from Qualcomm is a SAW Resonator with Frequency 319.508 MHz, Centre Frequency 319.508 MHz, Insertion Loss 1.5 to 1.9 dB, Capacitance 3 pF, Quality Factor Unloaded 8600 to 14000. Tags: Surface Mount, SAW Resonator. More details for R1952 can be seen below.