1.part no. 27.145m20p/hc-50u
2.nominal frequency 27.145 mhz
3.frequency tolerance at 25ºc± 20 ppm
4.frequency stability (ref. to 25ºc) ± 30 ppm (-20ºc ~ +70ºc)
5.mode of oscillation □  fund. ■ 3rd □ 5th overtone
6.operating temperature range 0ºc ~ +70ºc
7.storage temperature range -40ºc ~ +85ºc
8.load capacitance (cl) 18 pf
9.shunt capacitance (co) 5 pf max.
10.equivalent series resistance (esr) 50 ω max.
11.drive level 100 μw
12.aging (at 25ºc) ± 3 ppm / year max.
13.insulation resistance 500 mω min. at dc 100 ± 10 v