The ASTX-13 from Abracon LLC is a TCVCXO with Frequency 13 to 52 MHz, Supply Voltage 1.8 to 3.0 V, Current 1.5 to 3 mA, Phase Noise -144 to -130 dBc/Hz, Phase Noise 1 kHz -130 dBc/Hz @ 1 KHz. Tags: Surface Mount. More details for ASTX-13 can be seen below.