SENKO CS™ Connector
The SENKO CS™ Standard Connector is the ultimate Base-2 connector, combining best-in-class packing density with carrier-grade performance and reliability. Designed and optimized for next-generation data rates, the CS™ connector gives network operators the ability to densify existing legacy infrastructure while simultaneously providing a clear upgrade path to 400G and beyond.
With four times the fiber cabling density of duplex LC connectors, an integrated push-pull boot for tool-free installation, and full compatibility with QSFP-DD, OSFP, and SFP-DD transceivers, the CS™ Standard Connector is engineered for hyperscale, edge, enterprise, and colocation data centers that demand maximum performance in minimum space.
SENKO CS™ Standard Connector
The CS™ Standard Connector is suitable for termination to either 2.0 mm or 3.0 mm round cable with a ruggedized jacket and internal strain relief. Its integrated push-pull boot simplifies insertion and removal even in dense patch panels where finger access is limited. A gang-clip can be added to four individual CS™ connectors, allowing them to be patched simultaneously to adapters or 4-channel transceivers — enabling efficient direct transceiver breakout in spine/leaf architectures. The pre-assembled design accelerates field deployment without sacrificing IEC random mating Grade B optical performance.
Download Product Datasheet (PDF)
Key Features
- 4× Density Over Duplex LC The CS™ connector delivers four times the fiber cabling density of traditional duplex LC connectors in a Very Small Form Factor (VSFF) housing — the highest Base-2 packing density available. This enables network operators to significantly increase port count within existing panel footprints without costly infrastructure overhauls.
- Integrated Push-Pull Boot A unique push-pull boot design simplifies insertion and removal even in densely populated patch panels where finger access is limited. No extraction tools are required — technicians can seat and release the connector with a simple push or pull, dramatically reducing installation time and improving accessibility during moves, adds, and changes.
- Gang-Clip for Simultaneous Patching An optional gang-clip accessory allows four individual CS™ connectors to be combined and patched simultaneously to adapters or 4-channel transceivers. This enables efficient, error-free mass patching operations and simplifies direct transceiver breakout in spine/leaf architectures at hyperscale and enterprise data centers.
- Optimized for 400G Data Rates Designed for compatibility with QSFP-DD, OSFP, and SFP-DD transceivers, supporting up to four CS™ connectors per transceiver. The CS™ provides a seamless path to 400G and beyond, enabling simple transceiver breakout in spine/leaf architectures while future-proofing network investments for next-generation data rates.
- Carrier-Grade Optical Performance Combines two 1.25 mm ceramic zirconia ferrules to deliver IEC random mating Grade B performance. Typical insertion loss as low as 0.05 dB (SM Premium Low Loss UPC) with typical return loss of ≥55 dB (UPC) and ≥65 dB (APC) — meeting the stringent optical requirements of carrier, hyperscale, and enterprise networks.
- Pre-Assembled Design The CS™ Standard Connector's pre-assembled architecture accelerates field termination and reduces the skill level required for deployment. Compatible with 2.0 mm and 3.0 mm jacketed cables, its ruggedized construction and internal strain relief ensure long-term mechanical durability across demanding installation environments.
Technical Specifications
Full technical details are available in the downloadable spec sheet.
| Parameter | Details |
|---|---|
| Fiber Count | Duplex (2 fibers) |
| Cable Suitability | 2.0 mm and 3.0 mm jacketed cables |
| Ferrule Material | Zirconia (1.25 mm ceramic) |
| Insertion Loss (Typical) | 0.05 dB (SM Premium Low Loss UPC) / 0.07 dB (SM Premium Low Loss APC) |
| Insertion Loss (Max) | 0.15 dB (SM Premium Low Loss UPC / APC) |
| Return Loss (Typical) | ≥55 dB (UPC) / ≥65 dB (APC) / ≥25 dB (MM) |
| Operating Temperature | -40°C to +75°C |
| Durability | 500 matings per TIA-568 |
| RoHS Compliance | Yes (2015/863 RoHS) |
| REACH Compliance | Yes |
| Halogen-Free | Yes |
| Humidity Resistance | 95% |
Insertion loss values are based on master-grade jumper to low-loss random mating tests.
Applications
- High-Density Patching Delivers four times the fiber cabling density of duplex LC in the same panel space, making the CS™ the preferred connector for environments where maximizing port count per rack unit is the primary design objective — including top-of-rack patching, cross-connect frames, and structured cabling trunk systems.
- QSFP-DD, OSFP and SFP-DD Transceiver Links Optimized for direct connectivity to the high-speed transceiver formats used in 400G deployments. Supports up to four CS™ connectors per transceiver and enables simple, low-loss transceiver breakout without the need for intermediate cassettes or fan-out assemblies.
- Hybrid Base-2 Cable Assemblies Enables the combination of CS™ connectors with other duplex connector types in hybrid Base-2 cable assemblies, providing flexible interconnect solutions for mixed-technology environments undergoing incremental upgrades to next-generation infrastructure.
- Hyperscale, Edge, Enterprise and Colocation Data Centers Engineered for the full range of modern data center environments — from hyperscale campuses and carrier-grade colocation facilities to enterprise IT and edge compute deployments. The CS™ connector's combination of density, reliability, and upgrade-path flexibility makes it a universal platform for data center fiber connectivity.
Why Choose the SENKO CS™ Connector?
- Best-in-Class Packing Density Four times the fiber cabling density of duplex LC in a VSFF form factor — the highest Base-2 density available. Network operators can densify existing infrastructure and delay costly facility expansions by maximizing the fiber count within current panel and rack footprints.
- Carrier-Grade Reliability IEC random mating Grade B certified with 500-mating durability per TIA-568 and two 1.25 mm zirconia ceramic ferrules. The CS™ delivers the optical and mechanical performance that carrier, hyperscale, and mission-critical enterprise networks require across the full product lifetime.
- Simplified Installation The integrated push-pull boot and optional gang-clip for simultaneous 4-channel patching reduce installation complexity and deployment time. Pre-assembled connectors further accelerate field termination, lowering the total cost of installation across large-scale fiber deployments.
- Future-Proof Architecture Designed to support 400G and emerging higher data rates with full QSFP-DD, OSFP, and SFP-DD transceiver compatibility. The CS™ enables operators to densify today's legacy infrastructure with a connector that is equally suited for tomorrow's next-generation network fabric.
Frequently Asked Questions
The CS™ connector delivers four times the fiber cabling density of traditional duplex LC connectors — compared to the SN® Standard's three times density — making it the highest-density Base-2 connector currently available. Like the SN® series, it uses 1.25 mm zirconia ceramic ferrules and an integrated push-pull boot, but the CS™ adds an optional gang-clip for simultaneous 4-channel patching and is certified to IEC random mating Grade B, meeting carrier-grade performance standards.
The gang-clip is an optional accessory that combines four individual CS™ connectors into a single unit, allowing all four duplex connections to be inserted or removed simultaneously. This is especially useful when connecting to 4-channel transceivers such as QSFP-DD or OSFP, enabling efficient, aligned patching in a single motion and reducing the risk of misaligned or missed connections in high-density environments.
The CS™ Standard Connector is compatible with both 2.0 mm and 3.0 mm round jacketed cables. It incorporates a ruggedized jacket termination and internal strain relief, ensuring reliable mechanical performance across a wide range of installation environments and cable management configurations.
Yes. The CS™ connector is specifically designed to allow network operators to densify existing legacy infrastructure without requiring complete panel or rack replacements. Its hybrid Base-2 assembly compatibility means it can be used alongside existing duplex connector types, enabling a phased, non-disruptive migration to higher-density connectivity as network demands grow toward 400G and beyond.