The O-C25AXXXXYY-X-XX-X from NEL Frequency Controls is a OCXO with Frequency 8 to 20 MHz, Supply Voltage 3.15 to 12.6 V, Tuning Voltage 1 to 4.5 V, Phase Noise -170 to -100 dBc/Hz, Phase Noise 1 kHz -163 to -162 dBc/Hz. Tags: Surface Mount, Low G-Sensitivity. More details for O-C25AXXXXYY-X-XX-X can be seen below.