The T-S42-XXYY-X from NEL Frequency Controls is a TCXO with Frequency 10 MHz, Supply Voltage 3.2 to 5.25 V, Output Power 9 to 11 dBm, Load Capacitance 15 pF, Output Load 50 Ohms to 10 kOhms. Tags: Surface Mount, Low G Sensitivity. More details for T-S42-XXYY-X can be seen below.