SMA Female to UMCX Jack Adapter SMA adapter PE91005 is one of over 40, 000 available RF, microwave and millimeter wave components from . Our SMA to UMCX adapter is a between series coaxial adapter design. This 50 Ohm SMA adapter is precision manufactured to RF components industry specifications and has a maximum frequency of 6 GHz. SMA female to UMCX plug adapter is one of the many RF components that ship same day as they are ordered. PE91005 female SMA to plug UMCX adapter has a straight body. This straight SMA coax adapter is a in-line RF adapter.