Features ①Dimension 14.5 x 9.6 x 6.5mm, pypical ②6-Pin SMD Package ③±30 ppb stability over -40 to 85°C ④Stratum 3 (Overall ±4.6 ppm including 20 years aging.) ⑤Frequency Range, 10 MHz to 40MHz   TYPICAL APPLICATION ①SDH/SONET, Telecommunication Base Station ②Test and Measurement Equipment ③Synthesizer , Digital switch , Reference Timing Circuit ④Packet Timing Protocol (e.g. IEEE-1588)