This 12-fiber OS2 pigtail set terminates a full 12-strand single-mode cable with factory-polished SC/UPC connectors. The 9/125 µm G.657.A1 glass is bend-insensitive, so it tolerates tight tray routing with minimal loss.
It also splices cleanly to G.652.D backbone fiber. Each 3-meter fiber has a 0.9 mm tight buffer for firm protection. The full TIA-598 twelve-color sequence keeps strands organized. Fire performance meets the OFNR riser standard. It's built for 12-port SC panels in telecom rooms, data centers, and central offices. Telecom rooms, data centers, and central offices use it as a backbone staple.
Full 12-Port Single-Mode Panels
Twelve-fiber single-mode cable is a backbone staple. This set terminates every strand in one package, from blue to aqua in TIA-598 order. Each fiber maps to the matching port on a 12-port SC adapter panel, which keeps records clear for years.
OS2 and G.657.A1 Explained
OS2 is the cabling grade for low-water-peak single-mode fiber, with typical attenuation of 0.4 dB/km at 1310 nm and 0.3 dB/km at 1550 nm. G.657.A1 adds bend insensitivity, supporting a 10 mm minimum bend radius. Together, they give you long reach and forgiving handling.
Tight Buffer for High-Count Trays
A 900 µm tight buffer bonds to each 250 µm fiber. That added stiffness keeps strands from kinking when twelve of them share one tray. Strip in short passes with a precision stripper sized for 900 µm buffer.
SC/UPC Connector Specs
Each SC connector uses a 2.5 mm ceramic ferrule in a square snap-in body. It follows IEC 61754-4. The blue UPC housing signals a flat-polish single-mode connector. Never connect it to a green APC adapter.
UPC Return Loss and When It's Enough
Single-mode UPC connectors typically reach about 50 dB return loss. That's more than enough for digital Ethernet, SONET, and DWDM data links. Choose APC instead only when the system carries analog RF video or PON signals, which need return loss closer to 60 dB or better.
• Connector: SC/UPC, 2.5 mm ceramic ferrule
• Fiber: OS2 single-mode 9/125 µm, G.657.A1
• Fiber count: 12, TIA-598 color coded
• Buffer: 0.9 mm tight buffer
• Fire rating: OFNR
• Length: 3 m
Splice and Test
A good single-mode fusion splice typically measures under 0.1 dB. After splicing, verify each strand with an OTDR or a power meter at 1310 and 1550 nm. Record the results for each port
