The 501-24761c-02 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 100 MHz, Supply Voltage 12 V, Phase Noise -122 dBm/Hz@100 Hz to -90 dBm/Hz@10 Hz, Phase Noise 1 kHz -140 dBm/Hz, Phase Noise 10 kHz -165 dBm/Hz. Tags: PCB Mount, Low G-Sensitivity. More details for 501-24761c-02 can be seen below.