The TX50S3A Series from Advanced Crystal Technology is a TCXO with Frequency 9.6 to 50 MHz, Supply Voltage 3.3 V, Current 10 mA, Load Capacitance 10 to 15 pf, Output Load CSW: 10K?, 10pF, HCMOS: 15pF. Tags: Surface Mount. More details for TX50S3A Series can be seen below.