The ROM1490E from Rakon is a OCXO with Frequency 10 to 50 MHz, Supply Voltage 2.7 to 5 V, Output_Voltage 1 to 2.5 V, Output Load 15 pF, Phase Noise -160 to -135 dBc/Hz. Tags: Surface Mount, Low G-Sensitivity. More details for ROM1490E can be seen below.