The MIL-PRF-55310/16 from Q-Tech Corporation is a Space Qualified Oscillator with Frequency 0.1 Hz to 250 Hz, Supply Voltage 5 V, Output Current 30 to 158 mA, Rise/Fall Time 5 to 15 ns, Operating Temperature -55 to 125 Degree C. Tags: Through Hole. More details for MIL-PRF-55310/16 can be seen below.