Seires SSMA are thead coupling sub-miniature coaxial connectors ,as smaller version of SMA connectors.Which have the excellent performance of light weight ,small size ,rugged construction ,wide frequency range and high rellability ,are widely used in RF and microwave telelcommuniction system
The interface diementions and technical characteristics are in occord with specifications of IEC169-18 and CECC 22140

Technical characteristics
 Temp.range................-55～ +155 
 Impedanec.................50Ω
 Frequency Range...........DC0～3GHz
 Working Voltage...........335V max
 Dielectric Withstand Voltage.........750V rms
 Contact resistance
 Center Contact............≤4mΩ
 Outer Contact.............≤2.5mΩ
 Insulation resistance ....≥1000 mΩ
 VSWR .....................≤1.07+0.01f
 Durability(mating)........ 500 (cycles)

MATERIAL & PLATING
shell ..............brass ...............goldplated
contact pin ........brass................goldplated
socket............. beryllium........... goldplated
elastic contact.... beryllium........... goldplated
insulator ..........PTFE
crimping suite..... copper alloy......... nickel or goldplated
0-ring sealing .....6146 silastic

APPLECABLE STANDARD
MIL-C-39012;
CECC 22130;
IEC 60169-10

S09-SJPT4-11BS00.pdf