FME connector is one kind of coaxial RF connectors has 50 ohm impedance and offers excellent performance from DC to 3.0GHz. FME connector was designed for mobile equipment, so is the most common choice to be one GSM adaptor cable.
FME connector has M8xP0.75 thread coupling. FME male normally has round tip center contact.
FME female and FME male cable connector are offered for RG58 and RG174 coax cables as extension cable.
- Inner thread of M8xP0.75 on male body
- Round tip type center contact
- Male center contact
- Coupling nut with M8xP0.75
- Female center contact
- A Insulator exposed in air
How to judge FME connectors’ feature from outline:
FME connector Male (Plug)
Inner thread of M8xP0.75 is inside FME male, and inner diameter is about 7.188mm. The FME ale center contact normally has round tip and will be flush with or even protruded 1.00mm over body flange.
FME connector Female (Jack)
There is a coupling nut of M8xP0.75 outer thread on FME female. Unlike other coaxial connectors, FME female has another insulator exposed outside.
FME connector right angle type:
The cable entry way or PCB terminated way is at 90 degrees against coupling way.
FME connector straight type:
The cable entry way or PCB terminated way face 180 degrees to coupling way.
FME connector male/plug bulkhead type:
The inner thread of FME male is for mating with FME female. Besides inner thread, bulkhead type FME male also has outer thread and is equipped with washer and nut.
1) Rear mount type bulkhead
FME male bulkhead rear mount type will go through the panel mounting hole toward the external of device from the internal, and mount it with washer and nut from outside.
2) Front mount type bulkhead
FME male bulkhead front mount type will go through the panel hole toward the internal of device from the external, and mount it with washer and nut from inside.
FME connector PCB type:
PCB type FME male normally has 2.9mm or 3.9mm leg lengths. Four legs and one conductor will go through PCB vertically, and be soldered in rear side of PC board.
FME connector cable type:
FME male and FME female commonly be terminated with RF coaxial cable like RG174, RG58 by crimping or soldering to be FME cable or FME pigtail for RF signal transmission.