2024年4月12日
10 Reliable Custom Wire Harness Manufacturers in China (2026 Guide for OEMs)
China’s booming electronics sector offers thousands of wire harness suppliers, but finding the right fit for mid-to-high volume...
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) Switch Ports and External Mini-SAS HD (SFF-8644) / Mini-SAS (SFF-8088) Storage 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
- Connector A
- QSFP+ (SFF-8436) Plug
- Data Rate
- 40 Gbps (QSFP+) / Up to 12Gbps per SAS lane
- Connector B
- Mini-SAS HD (SFF-8644) or SFF-8088
- Impedance
- 100 Ohms Differential
- Cable Type
- Direct Attach Copper (DAC), Twinax
- Wire Gauge (AWG)
- 28 AWG / 30 AWG (Customizable)
- Cable Length
- 0.5m to 5m (Custom Lengths Available)
- Assembly Standard
- IPC/WHMA-A-620
Material Composition
| Material | Value / Description |
|---|---|
| Connector Shell | Zinc / Copper Alloy, Nickel-Plated |
| Contacts | Copper Alloy, Gold-Plated (30µ") |
| Conductor | Premium Tinned Copper |
| Shielding | 360° EMI/RFI Braided Shield + Al-Foil |
| Insulation | Foam PE / LCP (UL94V-0 Rated) |
| Cable Jacket | PVC or LSZH (Low Smoke Zero Halogen) |
Technical Characteristics
| Characteristic | Value |
|---|---|
| Rated Voltage | 30V AC/DC |
| Rated Current | 0.5A per pin |
| Operating Temperature | -20°C to +85°C |
| Flame Retardant Grade | VW-1 / UL94V-0 |
| Insulation Resistance | ≥ 10 MΩ @ 300V DC |
| Contact Resistance | ≤ 10 mΩ |
| Mating Durability | ≥ 250 Cycles |
| Quality Testing | 100% Tested for Continuity & Insertion Loss |
| Conductor Resistance | ≤ 5 Ω |
Application Scenarios
-
Enterprise Storage Area Networks (SAN): Providing reliable, high-bandwidth uplinks between 40G QSFP+ core switches and external SAS storage controllers (JBODs/RAIDs) without the need for expensive optical transceivers.
-
Data Center Server Racks: Delivering low-latency, short-reach DAC interconnects for high-density server environments, dramatically reducing power consumption and latency compared to active optical cables (AOC).
-
High-Performance Computing (HPC): Serving as the robust physical layer for aggregating multiple SAS data lanes into a single QSFP+ interface, eliminating data bottlenecks in intensive data processing tasks.
-
Telecommunication Enclosures: Ensuring uninterrupted, heavily shielded data flow between edge routers and localized storage nodes, effectively resisting the intense electromagnetic noise typical of telecom infrastructure.
Frequently Asked Questions
What is the difference between SFF-8644 and SFF-8088 on the Mini-SAS end?
SFF-8088 is the standard external Mini-SAS connector (typically supporting SAS 2.0 up to 6Gbps per lane). SFF-8644 is the newer High-Density (HD) Mini-SAS connector supporting SAS 3.0 (up to 12Gbps per lane). We can manufacture the cable with either termination based on your specific storage array hardware.
Are these DAC cables compatible with major network switch brands?
Yes. As an OEM manufacturer, we can program the EEPROM integrated into the QSFP+ connector to be fully compatible with major equipment brands like Cisco, Arista, or Juniper, ensuring plug-and-play functionality without recognition errors.
Can you provide LSZH (Low Smoke Zero Halogen) jackets for data center installations?
Absolutely. While standard PVC is available and highly durable, we frequently supply LSZH cable jackets to meet the strict building fire safety and environmental codes required in enterprise data centers.
Are the cables tested for signal integrity before shipment?
Yes, every high-speed twinax cable assembly undergoes rigorous automated testing in our facility. We test for continuity, insertion loss, and cross-talk to guarantee they meet or exceed standard bandwidth specifications.
What is your Minimum Order Quantity (MOQ) for custom lengths?
We offer very flexible MOQs to support your initial testing and prototyping phases. For standard volume OEM production runs, our lead time is typically 2 to 4 weeks depending on the specific wire gauge and jacket requirements.
Overview and Application Notes
Overview Engineered for uncompromising data integrity in modern data centers, our QSFP+ to Mini-SAS / Mini-SAS HD Direct Attach Copper (DAC) Cable Assemblies seamlessly bridge 40G network switches with high-density enterprise storage arrays. Manufactured in our ISO-certified facility under strict IPC/WHMA-A-620 standards, these hybrid breakout cables feature premium Twinaxial conductors and rugged die-cast zinc alloy shells, ensuring optimal high-frequency signal transmission with minimal insertion loss. Equipped with comprehensive 360° EMI/RFI shielding, they provide exceptional resistance to electromagnetic noise within dense server racks. As a dedicated OEM/ODM manufacturer, we offer fully customizable solutions, including specific AWG gauges, cable lengths, EEPROM programming for brand compatibility, and LSZH jacket options to meet your exact data center topology requirements.
Application Notes
-
Bend Radius Restrictions: High-speed twinax cables are highly susceptible to performance degradation if bent too sharply. 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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Connector Latching: Ensure the pull-tab mechanism on the QSFP+ end and the push-to-release or squeeze latch on the Mini-SAS / Mini-SAS HD end are fully engaged with their receptacles to prevent disconnections caused by server fan vibration.
-
Cable Routing: To maintain signal integrity and optimize thermal management, route these high-speed DAC cables away from unshielded AC power lines and avoid obstructing server exhaust vents
