It is a SMA female connector or SMA Jack connector. It is soldered on the PCB side and the pin space for clamping the PCB is 1.7mm
                    
                    	
                        	Features:
                            * Impedance: 50 Ohm
* Insulation resistance: ≥ 5000M Ohm
* Dielectric Withstanding Voltage: 1000V RMS /50Hz
* Center Contact Resistance.: ≤ 5 mohm
* Outer Contact Resistance: ≤3 mohm
* Working Temperature: -55℃ ~ +155℃                            
Application:
                            RF products which need external SMA antenna or cables.