The SR5501 from Vanlong is a SAW Resonator with Frequency 403.55 MHz, Centre Frequency 403.55 MHz, Insertion Loss 1.3 to 1.8 dB, Capacitance 2.45 to 3.05 pF, Voltage 30 V. Tags: Surface Mount, SAW Resonator. More details for SR5501 can be seen below.