Freeform Ribbon® UHFC OSP All-Dielectric Slotted Core Cables

Sumitomo Electric’s Freeform Ribbon® Ultra High Fiber Count OSP All-Dielectric Slotted Core Cables feature 250 & 200 μm color-coded optical fibers for easy fiber identification and Sumitomo’s exclusive patented pliable ribbons. Freeform Ribbon® enables high fiber density within a small cable diameter which in turn helps with limited duct space. The twelve fiber ribbons enable to splice with conventional fiber ribbons as well as single fibers by easily breaking into single fibers by hands and connectorization with both MPO and all industry standard connectors. The non-preferential bend axis allows for easy installation in space-constrained areas. The cable includes a dry water-blocking materials that eliminate cable flooding gels, thereby eliminating the cleaning and blocking preparation steps associated with standard gel-filled cables. By eliminating these steps, the use of a totally dry cable speeds overall installation, termination, and splicing while reducing labor and material costs. The all dielectric design requires no grounding or bonding.

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Product Information



Min. Bend Radius – During Installation20 x Cable OD
Min. Bend Radius – After Installation10 x Cable OD
Maximum Tensile Load During Installation600 lb (2,670 N)
Maximum Recommended Service Load200 lb (890 N)
Compression Resistance124 lb/in (220 N/cm)
Operation Temperature Range-40 to +158°F (-40 to +70°C)

Physical Characteristics

250 μm Cables

Fiber CountNominal Cable OD Nominal Weight Fibers Per Ribbon No. of Slots
864f0.83 in (21.0 mm)202.0 lb/kft (300.0 kg/km)12f6
1,152f0.98 in (24.9 mm)302.4 lb/kft (450.0 kg/km)12f6
1,728f1.02 in (25.9 mm)302.4 lb/kft (450.0 kg/km)12f6
3,456f1.26 in (32.0 mm)470.3 lb/kft (700.0 kg/km)12f6

200 μm Cables

Fiber CountNominal Cable ODNominal Weight Fibers Per Ribbon No. of Slots
1,728f0.98 in (25.0 mm)268.8 lb/kft (400.0 kg/km)12f6
6,912f1.46 in (37.0 mm)638.4 lb/kft (950.0 kg/km)12f8

Ordering Information

250 μm Cables

Part NumberFiber Count
DRSC – GNS – 150211,152f

200 μm Cables

Part NumberFiber Count


  • Color-Coded Optical Fibers for Quick and Easy Identification
  • Freeform Ribbon® for High Fiber Density
  • 12-Fiber Grouping for Ease and Compatibility with Multi-Fiber Connectors
  • Splice Capability with Single Fibers
  • Robustness in Harsh Installation Environment
  • Sumitomo Electric’s G.657.A1 Fiber
  • Gel Free
  • Meets the Mechanical and Optical Requirements of IEC 60794-3-10, Tested Per Applicable Requirements of Telcordia IEC 60794-3-10
  • SZ or Helically Stranded