High-density 16-Fiber MTP APC to 8x LC UPC harness cable OM4 crossover for 400G

Custom OM4 MTP®-16 APC to 8x LC UPC Harness Cable, 16-Fiber (Crossover)

  • 400G-Ready Architecture: Specifically engineered to break out a single 400GBASE-SR8 transceiver (OSFP/QSFP-DD) into eight discrete 50G LC connections.

  • Multimode APC Polish: Utilizes an elite MTP-16 APC (Angled Physical Contact) connector to drastically minimize back reflection, a critical requirement for next-gen 400G PAM4 transmission.

  • Crossover Polarity: Factory-configured with precise Crossover mapping to ensure flawless Transmit-to-Receive (Tx/Rx) routing between the MTP-16 port and the 8x LC duplex ports.

  • High-Density Base-16: Consolidates 16 fibers into a single ultra-dense MTP connector, maximizing patch panel real estate and improving rack airflow.

  • Direct Manufacturer Customization: Built in our 400-500 employee facility, ensuring consistent premium quality, fully customizable lengths, and unmatched production capacity for your hyperscale deployments.

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Product Overview

The Wolontek Custom OM4 MTP-16 APC to 8x LC UPC Harness is an enterprise-class breakout solution designed specifically for the extreme bandwidth demands of 400G networks. As data centers migrate to 400GBASE-SR8 infrastructures, traditional Base-8 or Base-12 cabling is no longer sufficient. This advanced 16-fiber harness provides a seamless, high-density link between next-generation QSFP-DD/OSFP transceivers and discrete 50G SFP56 or 100G SFP-DD equipment.

A defining feature of this harness is the use of an APC (Angled Physical Contact) polish on the multimode MTP-16 connector. While multimode fibers typically use flat UPC polishes, the strict return-loss requirements of 400G PAM4 signaling necessitate the angled APC finish to prevent signal degradation. Paired with precise Crossover polarity, this custom harness ensures plug-and-play reliability right out of the box, eliminating complex field configuration.

Key Features

  • Elite US Conec Components: Terminated with genuine MTP®-16 hardware to guarantee a strict maximum insertion loss of ≤0.35dB.

  • Bend-Insensitive OM4 Fiber: Constructed with advanced 50/125μm bend-insensitive multimode fiber (BIMF) to maintain optical integrity in tight routing spaces.

  • Tailored to Your Specifications: Say goodbye to excessive cable slack. We custom-manufacture the exact total length and breakout leg lengths required for your unique Top-of-Rack (ToR) layout.

  • Robust Quality Control: Every 16-fiber assembly undergoes rigorous 3D interferometry testing and end-face inspection by our seasoned production team.

  • Standardized Identification: Features the industry-standard Magenta or Aqua jacket (customizable) for quick visual identification of OM4 runs.

Technical Specifications

Specification Details
Connector A 1x MTP®-16 (Female, No Pins) - APC Polish (Offset Key)
Connector B 8x LC Duplex - UPC Polish
Fiber Count 16-Fiber (Base-16)
Fiber Category Multimode OM4 50/125μm
Polarity Crossover (For 400G Breakout)
Insertion Loss (MTP) ≤ 0.35dB (Low Loss)
Insertion Loss (LC) ≤ 0.20dB
Wavelength 850nm / 1300nm
Jacket Options LSZH / OFNP / OFNR

Application Scenarios

This custom Base-16 harness is the ultimate cabling choice for hyperscale environments requiring:

  1. 400G to 8x 50G Breakout: Splitting a 400GBASE-SR8 transceiver (QSFP-DD) into eight 50GBASE-SR links (SFP56).

  2. 200G to 8x 25G Breakout: Distributing a 200GBASE-SR8 signal to eight discrete 25G servers.

  3. High-Density Machine Learning (ML) Clusters: Providing massive, reliable bandwidth for AI training servers and parallel computing nodes.

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