The SiT7101 from SiTime is a OCXO with Frequency 10 to 60 MHz, Supply Voltage 2.5 to 3.3 V, Frequency Stability ±3 to ± 5 ppb, Temperature Stability ±3 ppb, Operating Temperature -40 to 95 Degree C. Tags: Surface Mount. More details for SiT7101 can be seen below.