SC/APC Simplex Fiber Adapter, Single-Mode, Green, 8°, Ceramic Sleeve, Flanged (FOS-SCA-S)

This is a simplex SC/APC fiber adapter for single-mode, the green coupler that joins two SC/APC connectors end to end through a panel. It's a plastic housing with integrated flanges and a snap-in body in the standard SC simplex footprint, so it drops into the SC cutout on any patch panel, LGX plate, fiber distribution unit, or wall-mount enclosure without tools. The port has a ceramic alignment sleeve, and the housing is green, which is the color code for the 8° angled polish that keeps back reflection low on PON, CATV, RFoG, WDM, and other links that can't tolerate light bouncing back toward the transmitter. It takes SC/APC connectors only, on OS1 or OS2 single-mode fiber; a blue SC/UPC connector has a flat end-face and doesn't mate with an angled one. It comes with metal clips and dust caps, it's RoHS compliant, and it's sold individually. For a plate already loaded with six of these, the FAP-SM-SCA-6S; for the same green SC/APC in a duplex adapter, the FAP-SM-SCA-6D and FAP-SM-SCA-3D plates; for the single-fiber FTTH cord, the SCASCASMP, and for a duplex SC/APC cord, the SCASCASM; for SC/APC to an LC/APC port, the LCASCASM; for the pigtails behind the panel, the PGTSC12-SMA and PGUSC12-SMA; for the blue UPC version of this adapter, the FOS-SCU-S.

Features

• Simplex SC/APC. One SC port, single-mode, 8° angled polish, green.
• Ceramic alignment sleeve. Low insertion loss and very low back reflection.
• SC simplex footprint. Fits the standard SC cutout in any panel, plate, FDU, or enclosure.
• Flanged, snap-in. Plastic housing with integrated mounting flanges; no tools.
• OS1 and OS2. For SC/APC connectors only; not for SC/UPC.
• Metal clips and dust caps included.
• RoHS compliant.
• Sold individually.

Where It Fits

It suits a PON or FTTH distribution panel where the OLT, the splitters, and the drops are all on SC/APC and every port has to be green, with each drop patched on its own fiber. It suits a CATV or RF-over-fiber head end where a reflective UPC adapter would put noise in the picture, and a WDM shelf where the return loss spec rules UPC out. Installers loading a blank LGX plate or a fiber distribution unit port by port for a PON use it, and so do techs replacing a worn adapter in an existing APC panel without changing the plate. A multi-dwelling unit's fiber closet, where the splitter outputs land on simplex SC/APC, is a candidate. It goes with the SC/APC patch cords from the single-mode patch cable collection, with the SC/APC pigtails and adapter plates from the fiber panel collection, and with the fiber cleaners from the test equipment collection. For a plate loaded with six of these, the FAP-SM-SCA-6S, and for duplex SC/APC plates, the FAP-SM-SCA-6D and FAP-SM-SCA-3D. For the cords, the simplex SCASCASMP, the duplex SCASCASM, and the LCASCASM for SC/APC to LC/APC. For a cord from an APC panel to a UPC port, the SCUSCASM. For the pigtails, the PGTSC12-SMA and PGUSC12-SMA. For a UPC plant, the FOS-SCU-S.

Good to Know

Green means APC, and it's a hard rule, not a color preference: an 8° angled ferrule against a flat UPC ferrule leaves an air gap at the end-face, which costs a few dB and sends a reflection back up the fiber, so every connector that goes into this adapter has to be green SC/APC, and the cord at the other end of each port has to match whatever it plugs into. A PON is the usual reason to buy it: one laser feeds many homes through a splitter, and a reflection anywhere on the shared fiber comes back to every receiver, which is why GPON and EPON plants are APC end to end. The ceramic sleeve is the right sleeve for single-mode; a phosphor bronze sleeve is a multimode part and doesn't hold a 9 µm core to the tolerance a single-mode link needs. Simplex is the normal PON and FTTH adapter, since the link runs both directions on one fiber; for two-fiber circuits on APC, a duplex SC/APC plate keeps the pair together. The snap-in flanges are what hold it in a stamped cutout, and the metal clips in the box are for plates that take a clip rather than a flange, so check which the panel wants before you order a quantity. Clean and inspect every ferrule before it goes in, since an APC end-face shows dirt as loss and reflection just like any other, and leave the dust cap in any port without a cord. Don't look into an open port on a live link; a PON port carries a laser whether or not an ONT is on the other end.

Specifications

Usually ships the same day.