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 FA-238 18.0000MB-C0 FA-238 18.0000MD-K0 FA-238 18.4320MA30X-AG0 FA-238 18.4320MA30X-AG3