The XE63S - A00 from Xsis Electronics is a Space Qualified Oscillator with Frequency 400 KHz to 90 MHz, Frequency Stability ±10 to ±100 PPM, Input Current 5 to 50 mA, Rise/Fall Time 3 to 5 nS, Start-Up Time 10 mS. Tags: Surface Mount. More details for XE63S - A00 can be seen below.