The ASR303.875A01-SE from Abracon LLC is a SAW Resonator with Frequency 303.8 to 303.95 MHz, Centre Frequency 303.875 MHz, Insertion Loss 1.5 to 2.5 dB, Capacitance 2.7 to 3.3 pF, Quality Factor Loaded 2000. Tags: Surface Mount, SAW Resonator. More details for ASR303.875A01-SE can be seen below.