2026年7月19日
Wire Harness Design Principles for Reliable OEM Products
Learn wire harness design principles for reliable OEM cable assemblies. Discover best practices, components, and tips to optimize...
Detailed Product Information
Technical Data & Reference
Structured parameters, material notes, application context and frequently asked questions for engineering and procurement evaluation.
Competitor & Cross-Reference
- Alternative Type
- Drop-in Replacement
- Competitor Part Number
- Amphenol / TE Connectivity QSFP+ to Mini-SAS Cable Series Compatible
- Mates With
- Standard QSFP+ (SFF-8436) and External Mini-SAS (SFF-8088) / Mini-SAS HD (SFF-8644) Receptacles
Drop-in Replacement: This part is a direct, pin-compatible substitute for the competitor part number listed above. No design modification required.
Technical Specifications
- Number of Pins
- 38-Pin (QSFP+) to 26/36-Pin (Mini-SAS)
- Data Rate
- Up to 40 Gbps
- Connector A
- QSFP+ (SFF-8436) Plug
- Connector B
- Mini-SAS (SFF-8088 / SFF-8644) Plug
- Wire Gauge (AWG)
- 28 AWG / 30 AWG (Customizable)
- Cable Type
- Direct Attach Copper (DAC), Twinax
- Cable Length
- Custom Lengths Available
- Impedance
- 100 Ohms Differential
Material Composition
| Material | Value / Description |
|---|---|
| Housing & Insulation | PA / LCP (UL94V-0 Rated) |
| Contacts | Copper Alloy, Gold-Plated (30µ") |
| Connector Shell | Zinc/Copper Alloy, Nickel-Plated |
| Shielding | 360° EMI/RFI Braided Shield + Foil |
| Conductor | Premium Tinned Copper |
| Cable Jacket | PVC or LSZH (Low Smoke Zero Halogen) |
Technical Characteristics
| Characteristic | Value |
|---|---|
| Rated Voltage | 30V AC/DC |
| Rated Current | 1A per pin |
| Operating Temperature | -25°C to +85°C |
| Flame Retardant Grade | VW-1 / UL94V-0 |
| Insulation Resistance | ≥ 10 MΩ @ 300V DC |
| Contact Resistance | ≤ 10 mΩ |
| Mating Durability | ≥ 1,000 Cycles |
| Quality Testing | 100% Continuity & Signal Integrity |
| Conductor Resistance | ≤ 5 Ω |
Application Scenarios
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Enterprise Storage Area Networks (SAN): Providing reliable, high-speed 40G uplinks between QSFP+ core switches and legacy external Mini-SAS (SFF-8088) storage controllers (JBODs/RAIDs).
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Data Center Server Racks: Delivering low-latency, short-reach Direct Attach Copper (DAC) interconnects within the same or adjacent server racks, dramatically reducing power consumption compared to optical transceivers.
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High-Performance Computing (HPC): Serving as the robust physical layer for aggregating multiple SAS lanes into high-bandwidth backbone connections, eliminating data bottlenecks in intensive computing tasks.
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Telecommunication Infrastructure: Ensuring uninterrupted, heavily shielded data flow between edge routers and local storage nodes, resisting electromagnetic noise in dense telecom enclosures.
Frequently Asked Questions
What is the difference between SFF-8088 and SFF-8644 in your cable options?
SFF-8088 is the standard external Mini-SAS connector typically supporting up to 6Gbps per lane. SFF-8644 is the newer, denser High-Density (HD) Mini-SAS standard supporting up to 12Gbps per lane. As an OEM factory, we manufacture QSFP+ to Mini-SAS breakout cables with either termination to match your specific hardware generations.
Are these DAC cables compatible with major brand switches like Cisco or Arista?
Yes. We can program the EEPROM within the QSFP+ connector to be fully compatible with major network equipment brands, ensuring seamless plug-and-play integration without "unsupported hardware" errors.
Can I request Low Smoke Zero Halogen (LSZH) jackets for my data center project?
Absolutely. While standard PVC is highly durable, we frequently supply LSZH cable jackets for enterprise data centers to meet strict building fire safety and environmental codes.
Do you test the signal integrity of these high-speed cables before shipping?
Yes. Every high-speed server cable assembly undergoes rigorous automated testing for continuity, impedance matching, and insertion loss to guarantee performance at rated speeds.
What is the Minimum Order Quantity (MOQ) and lead time for custom assemblies?
Our MOQ is highly flexible to support your prototyping and testing phases. For standard volume OEM orders, the typical production lead time is 2 to 4 weeks depending on raw material availability and testing requirements.
Overview and Application Notes
Overview Engineered for reliable, high-bandwidth data transmission in enterprise data centers, our QSFP+ to Mini-SAS Server Cable Assemblies bridge the gap between network switches and high-density storage arrays. Manufactured in our ISO-certified facility under strict IPC/WHMA-A-620 standards, these direct attach copper (DAC) cables feature premium tinned copper conductors and heavy-duty die-cast connector shells to ensure uncompromised signal integrity up to 40Gbps. To combat the extreme electromagnetic interference (EMI) found in dense server racks, we utilize comprehensive 360° braided shielding. As a factory-direct OEM/ODM partner, we provide tailored solutions including custom AWG configurations, specific cable lengths, and jacket materials (PVC or LSZH) to perfectly match your specific data center topology and hardware requirements.
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Application Notes
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Bend Radius Restrictions: High-speed twinaxial cables are sensitive to tight bends. Rigorously maintain a minimum flexible bend radius of at least 10x the cable’s outer diameter (OD) for dynamic/flexible installations, and 8x OD for fixed installations to prevent internal pair skew and signal degradation.
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Mechanical Latching: Always ensure the pull-to-release tab on the QSFP+ end and the squeeze-latch on the SFF-8088 end are fully engaged with their respective receptacles to prevent accidental disconnects due to rack vibration.
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Routing & EMI: Do not route these high-speed data cables in the same immediate bundle as heavy unshielded AC power cables. Maintain proper cable management to ensure optimal airflow and EMI isolation within the server cabinet
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