The TB5C from Connor-Winfield Corporation is a Space Qualified Oscillator with Frequency 6.4 to 50 MHz, Frequency Stability ±0.25 ppm, Supply Voltage 3.3 V, Output Current 2 to 3.5 mA, Rise/Fall Time 4 to 8 ns. Tags: Surface Mount. More details for TB5C can be seen below.