The ACTR3015/303.875/QCC4A from Advanced Crystal Technology is a SAW Resonator with Frequency 303.8 to 303.95 MHz, Centre Frequency 303.875 MHz, Insertion Loss 1.6 to 2.2 dB, Capacitance 2.15 to 2.75 pF, Quality Factor Loaded 2200. Tags: Surface Mount, SAW Resonator. More details for ACTR3015/303.875/QCC4A can be seen below.