The ACTR4010/433.42/QCC4A from Advanced Crystal Technology is a SAW Resonator with Frequency 433.345 to 433.495 MHz, Centre Frequency 433.42 MHz, Insertion Loss 1.3 to 1.8 dB, Capacitance 2.2 to 2.7 pF, Quality Factor Loaded 1300. Tags: Surface Mount, SAW Resonator. More details for ACTR4010/433.42/QCC4A can be seen below.