The ECS-SDR1-3150 from ECS Inc. International is a SAW Resonator with Frequency 314.925 to 315.075 MHz, Insertion Loss 1.4 to 2 dB, Capacitance 1.8 to 2.2 pF, Quality Factor Loaded 1600 Q, Quality Factor Unloaded 10750 Q. Tags: Surface Mount, SAW Resonator. More details for ECS-SDR1-3150 can be seen below.