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Fan one MPO out to duplex LC, SC or FC legs.
A harness takes the parallel MPO trunk and fans it out to the duplex connectors your transceivers actually have. One MTP at the panel end, a furcated set of LC, SC or FC legs at the equipment end — the standard way to serve duplex 10G/25G/100G optics from a parallel backbone.
Assemblies are built on US Conec MTP® ferrules and terminated in a controlled environment, then measured fibre by fibre. Interferometry checks the three geometry parameters that decide whether a multi-fibre ferrule mates properly — radius of curvature, apex offset and fibre height — and every end face is inspected and graded to IEC 61300-3-35 before the dust cap goes on.
Fibre count, fibre type, polish, polarity, gender, jacket rating, leg length and overall length are all build options rather than catalogue limits. Use the selector above to configure the exact assembly and the specification table will follow your choices; the measured test report ships with the cable.
| Fiber Count | 12F |
|---|---|
| Connector A | MTP® / MPO 12-fibre, female |
| Connector B | 6 × LC duplex |
| Fiber Type | OS2 single-mode, G.652.D — Corning SMF-28 Ultra |
| Wavelength | 1310 / 1550 nm |
| Insertion Loss | ≤ 0.35 dB |
| Return Loss | ≥ 60 dB |
| Connector Polish | APC — 8° angled, green housing |
| Polarity | Type B mapping, LC legs numbered and labelled |
| Typical Insertion Loss | 0.25 dB |
| Loss Grade | Standard |
| Gender | Female (unpinned) MPO end |
|---|---|
| Leg Cable | 2.0 mm LSZH round furcation |
| Breakout Leg Length | 1.0 m |
| Cable Jacket | LSZH round, 3.0 mm |
| Jacket Colour | Yellow |
| Furcation Body | Moulded strain-relief transition with pulling sock |
| Length | 5 m (custom lengths to 500 m) |
| Min. Bend Radius | 10 × cable OD dynamic, 5 × static |
| Crush Resistance | ≥ 1000 N / 100 mm |
| Tensile Strength | Short term 100 N / long term 30 N |
| Operating Temp | -10 °C to +60 °C |
| Storage Temp | -40 °C to +75 °C |
| Compliance | IEC 61754-7, TIA-604-5 (FOCIS-5/10), RoHS |
| Flame Rating | IEC 60332-1 LSZH |
| Optical Test | 100% — every fibre measured for insertion loss and return loss before shipment |
|---|---|
| Ferrule Geometry | Interferometer-verified: radius of curvature, apex offset and fibre height to IEC 61755-3 |
| End-Face Inspection | Every ferrule inspected and graded to IEC 61300-3-35 |
| Test Report | Per-fibre measured data supplied with the assembly, traceable to the serial number |
| Connector Source | US Conec MTP® ferrules; genuine-brand or FOT MPO to your preference |
| Customisation | Fibre count, type, polish, polarity, gender, jacket, leg length and overall length built to order |
| Lead Time | Stock configurations 3–5 days; custom builds 7–10 days |
| Warranty | 3 years |
| Part Number | Configuration | Fibre count | Availability |
|---|---|---|---|
| FOT-MPO-HARN | Standard configuration | 12F | Build to order |
| FOT-MPO-HARN-8F | Fibre count: 8F → 4 × duplex | 8F | Build to order |
| FOT-MPO-HARN-16F | Fibre count: 16F → 8 × duplex | 16F | Build to order |
| FOT-MPO-HARN-24F | Fibre count: 24F → 12 × duplex | 24F | Build to order |
| FOT-MPO-HARN-LCUB | Breakout connector: LC uniboot | 12F | Build to order |
| FOT-MPO-HARN-SC | Breakout connector: SC duplex | 12F | Build to order |
| FOT-MPO-HARN-FC | Breakout connector: FC simplex | 12F | Build to order |
| FOT-MPO-HARN-VSFF | Breakout connector: MDC / SN (VSFF) | 12F | Build to order |
Part numbers are indicative. Send us the fibre count, type, polish, polarity, gender, jacket and length and we confirm the exact build code on the quotation.
Insertion loss and return loss recorded for every fibre, not sampled.
Interferometer data on ferrule radius, apex offset and fibre height.
Every end face checked against IEC 61300-3-35 before packing.
Dust-capped, coiled on a reel or in a bag with the test report and pulling sock.
Parallel 40G/100G/400G/800G backbone between spine, leaf and top-of-rack panels.
Rail-optimised accelerator fabrics where one switch port breaks out to several GPUs.
Pre-terminated backbone that installs in hours instead of days, with the loss budget known up front.
Loopbacks, attenuators and inspection for proving ports before the link goes live.
A harness is cheaper and has one less mated pair in the channel, so it costs you less loss. A cassette is tidier, lets you re-patch the LC side without touching the trunk, and keeps the MPO hidden away from day-to-day handling. Harness for fixed equipment feeds; cassette where the front side changes often.
Yes — leg 1 carries MPO positions 1 and 12 under Type B mapping, and every leg is printed with its number and the MPO positions it carries. Say so on the RFQ if you need a different mapping; we build to it and label accordingly.
Yes, and in a dense panel they are worth the small premium: one round cable per duplex leg instead of two zipcord halves, roughly half the volume in the manager, and switchable polarity at the connector. See our uniboot and VSFF connector guide.
Both ends carry a printed label with the part number, fibre count, fibre type, polarity type and the serial number, and breakout legs are individually numbered. Tell us your own labelling convention on the RFQ and we print to it — it costs nothing and it saves an afternoon at installation.
Yes. We supply qualification samples so you can measure the loss and check the fit in your own panels before committing. Per-order test reports are standard, and sample reports can be provided in advance for tender documentation.
Tell us the platform and the quantity. An engineer checks the part against your switch and software version before quoting — if it will not work, we say so.
Goes to our engineers and the quotation desk together. Replies come from sales@topnetsystem.com, usually within one working day.