The SiT5801 from SiTime is a OCXO with Frequency 10 to 60 MHz, Supply Voltage 2.5 to 3.3 V, Output Power 420 mW (Consumption), Pulling ±3.125 to ±400 ppm, Frequency Stability ±3 to ±5 ppb. Tags: Surface Mount. More details for SiT5801 can be seen below.