Pigtail ST/UPC SM G657A1 SX 0.9mm OFNR Yellow, tight buffer

Pigtail ST/UPC SM G657A1 SX 0.9 mm OFNR Yellow, Tight Buffer from Red Cable Technology (RCT) is a simplex ST/UPC pigtail on bend-insensitive G.657A1 single-mode fiber, made for terminating fiber optic cables through fusion or mechanical splicing. The 0.9 mm OFNR yellow-jacketed fiber terminates in an ST/UPC connector. It’s built for ODFs, fiber terminal boxes, and distribution boxes.

Features & Specs:

• Simplex (SX) ST/UPC pigtail, yellow OFNR jacket, 0.9 mm buffered fiber, tight-buffer construction
• ST connector: remains one of the most widely used connectors, especially in multimode networks such as college campuses and most buildings; very easy to use thanks to its spring-loaded, keyed, push-in-and-twist mechanism; features a bayonet mount and a long cylindrical 2.5 mm ceramic or polymer ferrule to hold the fiber
• Bend-insensitive single-mode fiber, ITU-T G.657A1 — the de facto standard for bend-insensitive non-dispersion-shifted (NDSF) SMF in premises cabling, chosen for its optimized balance of performance and cost
• ITU-T G.657A1 and A2 are fully compliant with G.652D, delivering enhanced, low-loss fiber; minimum bending radii can be optimized, though that trades off fiber attenuation and cost. Bend-insensitive NDSF is defined in ITU-T G.657 with different minimum bending radii characteristics: G.657A1 (10 µm)
• Single-mode fiber delivers a greater transmission rate plus nearly 50 times longer distance than multi-mode fiber — but it costs more than multi-mode; the most basic difference is core size, along with the associated loss or attenuation and fiber bandwidth
• UPC connectors are polished with no angle — not exactly flat, with a slight curvature for better core alignment; UPC connectors are blue while APC connectors are green
• Terminate via fusion or mechanical splicing; high-quality pigtails with correct fusion splicing practice give the best performance possible for fiber optic cable terminations

## On the upgrade path

For on-premises or access-network installs, we recommend replacing legacy OS1 with new bend-insensitive OS2 (G.657A1) SMF for longer reach and enhanced link performance.