The CR117/U-Series from Wi2Wi is a Space Qualified Crystal with a frequency range of 30-61 MHz. This MIL-PRF-3098 crystal has a frequency tolerance of up to +/- 0.0015 % (operating temperature range) and a maximum series resistance of 40 Ohms. It has a maximum drive level of 1 mW and a shunt capacitance of 7 pF. The crystal has a current rating of 0.28 mA and an aging factor of +/- 0.005 %. It measures 0.435 x 0.183 x 0.530 inches and is ideal for various applications in the military, avionics, and space.