An SC/APC fiber optic adapter is a passive mechanical interface used to join two SC connectors that have angled physical contact (APC) ferrules, typically polished at 8°., two fiber connectors) such that light can reliably pass from one to the other with minimal insertion loss and maximum return loss. Understanding fiber connector types—SC/APC, SC/PC, LC/UPC, LC/APC, ST/PC, FC/PC, and FC/APC—is essential for selecting the right interface for your application. Each type varies by shape, polish (APC, PC, or UPC), and return loss performance, which affect PC, UPC, and APC Polish Styles: What's the. Aspects of optical fiber interconnect technology reflect its efficiency and reliability as the key characteristics. SC/APC connectors, as some of the best, determine demand in many areas of telecommunications and data transmission. – Adapter Type: SC/APC simplex or duplex? – With Flange? Some patch panels require flange-style Ready to optimize your fiber. In this category, specialist retailers, installers and network operators will find fibre optic APC adapters and couplers for single-mode fibre optic connections (OS2, simplex). The range includes LC/APC female to LC/APC female as well as LC/APC female to SC/APC male and LC/APC female to SC/APC.