SC series connector has a mnemonic of "Square Connector". It uses a ferrule with O.D. measuring 2.5mm. End-face of the ferrule is available in Flat, PC and APC. It is a snap mechanical connector. It is easy to be coupled, with low insertion loss, strong pressure resistance and high-density connections. SC series completely meets the standard of FOCIS 3,EIA604-4A，IEC，and　JIS　 C5970，SC-NTT,  EIA/TIA-604-03. It is also in accordance with international GR-326 standard and the standard of telecom industry,