The ASR303.825E from Abracon LLC is a SAW Resonator with Frequency 303.75 to 303.9 MHz, Centre Frequency 303.825 MHz, Insertion Loss 1.3 to 2.5 dB, Capacitance 2.7 to 3.3 pF, Quality Factor Loaded 2000. Tags: Surface Mount, SAW Resonator. More details for ASR303.825E can be seen below.