The ACTR436J/435.80/TO39 from Advanced Crystal Technology is a SAW Resonator with Frequency 435.75 to 435.85 MHz, Centre Frequency 435.8 MHz, Insertion Loss 1.3 to 1.8 dB, Capacitance 1.7 to 2.3 pF, Quality Factor Loaded 1850. Tags: Drop In, SAW Resonator. More details for ACTR436J/435.80/TO39 can be seen below.