This simplex OM4 pigtail pairs a factory-polished LC/UPC connector with a semi-tight 0.9 mm aqua buffer that strips quickly in one pass. It's a handy single-fiber solution for repairs, spare strand terminations, and adding one circuit to a busy LC panel.
The laser-optimized OM4 glass supports 10G up to 400 meters and 25G up to 100 meters. The aqua color identifies it as 50 µm laser-optimized multimode. The buffer is OFNR riser-rated. Choose 1 m for compact boxes or 3 m for rack-mount frames. Its quick-strip buffer makes it a favorite for service calls.
Fast Single-Fiber Repairs
When one connector on a backbone fails, you don't want to re-terminate the whole cable. Cut back the damaged end, strip the semi-tight buffer in one pass, and fusion splice this pigtail in place. The link is back in service within minutes.
Semi-Tight Buffer Advantages
The semi-tight buffer leaves a gap around the coated fiber that can't be seen at 100x magnification. The gap holds no gel or powder at all. At least 10 cm strips off with one circular cut, so you spend less time handling bare glass.
Aqua Color Code
Aqua is the TIA-598 color for laser-optimized 50 µm multimode fiber. It signals that this pigtail belongs on OM3 or OM4 links. That helps prevent accidental splices to orange 62.5 µm fiber or yellow single-mode.
OM4 With Room to Grow
OM4 supports 10GBASE-SR at 400 meters and 25GBASE-SR at 100 meters. Its 4,700 MHz·km bandwidth at 850 nm leaves headroom for future short-reach upgrades.
Why LC for Single Strands
LC panels hold twice as many ports as SC in the same space. Terminating spare strands on LC keeps them ready for SFP-based gear. You won't need hybrid patch cords or adapter changes later.
• Connector: LC/UPC, 1.25 mm ceramic ferrule
• Fiber: OM4 50/125 µm
• Fiber count: 1 (simplex)
• Buffer: 0.9 mm semi-tight, aqua
• Fire rating: OFNR
• Length options: 1 m and 3 m
Inspection Matters
The LC ferrule's small 1.25 mm face makes dirt even more damaging. Inspect with a fiber scope and clean before every connection. IEC 61300-3-35 defines the end-face criteria most technicians follow.
Good Practice in the Tray
Coil spare fiber at a gentle radius and secure the splice sleeve in its holder. Keep the pigtail's path free of sharp edges and tight tie wraps.
