The ASR433T from Abracon LLC is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.3 to 2 dB, Capacitance 2.2 pF, Quality Factor Loaded 1450. Tags: Drop In, SAW Resonator. More details for ASR433T can be seen below.