The OX-171 from Vectron International is a OCXO with Frequency 5 to 20 MHz, Supply Voltage 3.3 to 12 V, Phase Noise -125 dBc/Hz, Phase Noise 10 kHz -145 dBc/Hz, Frequency Stability ±8 ppb. Tags: Surface Mount, Low G-Sensitivity. More details for OX-171 can be seen below.