The SR2442B from SAW Components is a SAW Resonator with Frequency 2438 to 2446 MHz, Centre Frequency 2442 MHz, Insertion Loss 0.9 to 1.5 dB, Capacitance 1.2 pF, Operating Temperature -40 to 125 Degree C. Tags: Surface Mount, SAW Resonator. More details for SR2442B can be seen below.