FA-238 16.66667MD30X-W FA-238 16.6666MB-C3 FA-238 16.666700 FA-238 16.934400MHZ FA-238 16.9344MA-B5 FA-238 16.9344MB-K5 FA-238 16M 18PF 20PPM FA-238 16MHZ FA-238 18.0000MB50X-B FA-238 18.0000MB50X-B0