The ACTQ433.42/433.42/TO39 from Advanced Crystal Technology is a SAW Resonator with Frequency 433.345 to 433.495 MHz, Centre Frequency 433.42 MHz, Insertion Loss 6 to 8 dB, Capacitance 1.6 to 2.2 pF, Quality Factor Loaded 6500. Tags: Drop In, SAW Resonator. More details for ACTQ433.42/433.42/TO39 can be seen below.