The ACTR433A/433.92/TO39 from Advanced Crystal Technology is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.5 to 2.2 dB, Capacitance 1.65 to 2.25 pF, Quality Factor Loaded 1850. Tags: Drop In, SAW Resonator. More details for ACTR433A/433.92/TO39 can be seen below.