2026年6月28日
Aerospace Wire Harness Manufacturers: Quality & Compliance Guide
Find certified aerospace wire harness manufacturers. Our guide covers IPC/WHMA-A-620, SAE J1128, sourcing strategies, and quality benchmarks. Get...
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 HD Cable Series Compatible
- Mates With
- Standard QSFP+ (SFF-8436) Switch Ports and External Mini-SAS HD (SFF-8644) 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 (Host)
- QSFP+ (SFF-8436) Plug
- Connector B (Target)
- Mini-SAS HD (SFF-8644) Plug
- Data Rate
- Up to 40 Gbps (12Gbps per SAS lane)
- 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 |
| Housing / Insulation | LCP / Foam PE (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 | ≥ 100 MΩ |
| Contact Resistance | ≤ 10 mΩ |
| Mating Durability | ≥ 250 Cycles |
| Quality Testing | 100% Tested for Continuity & Insertion Loss |
Application Scenarios
-
Enterprise Storage Area Networks (SAN): Providing reliable, high-bandwidth interconnects between 40G QSFP+ core network switches and external SAS 3.0 storage controllers (JBODs/RAIDs) without the need for expensive optical transceivers.
-
Data Center Server Racks: Delivering low-latency, short-reach DAC connections for high-density server environments, dramatically reducing power consumption and thermal output compared to Active Optical Cables (AOC).
-
High-Performance Computing (HPC): Serving as the robust physical layer for aggregating multiple high-speed SAS data lanes into a single QSFP+ interface, effectively eliminating data bottlenecks in intensive parallel processing tasks.
-
Telecommunication Enclosures: Ensuring uninterrupted, heavily shielded data flow between edge routers and localized high-density storage nodes, resisting the intense electromagnetic noise typical of telecom infrastructure.
Frequently Asked Questions
Are these DAC cables compatible with major network switch brands?
Yes. As an OEM manufacturer, we can custom-program the EEPROM integrated into the QSFP+ connector to be fully compatible with major enterprise equipment brands (such as Cisco, Arista, or Juniper), ensuring plug-and-play functionality without system recognition errors.
What is the difference between SFF-8644 and the older SFF-8088?
SFF-8644 is the High-Density (HD) Mini-SAS standard, designed for smaller port footprints and supporting SAS 3.0 speeds (up to 12Gbps per lane). SFF-8088 is the older generation standard supporting SAS 2.0 (up to 6Gbps). The cable listed here features the newer HD SFF-8644 termination.
Can you provide LSZH (Low Smoke Zero Halogen) cable 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 modern enterprise data centers.
Are the cables tested for signal integrity before shipment?
Yes, every high-speed twinaxial 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 for 40G transmission.
What is your Minimum Order Quantity (MOQ) for custom lengths?
We offer flexible MOQs to support your initial testing and prototyping phases. For standard volume OEM production runs, our typical lead time is 2 to 4 weeks, depending on the specific wire gauge, length, and jacket requirements.
Overview and Application Notes
Overview Engineered for uncompromising data integrity in modern enterprise data centers, our QSFP+ to Mini-SAS HD (SFF-8644) Direct Attach Copper (DAC) Cable Assemblies seamlessly bridge 40G network switches with high-density storage arrays. Manufactured in our ISO-certified facility strictly adhering to IPC/WHMA-A-620 standards, these breakout cables feature premium Twinaxial conductors and rugged die-cast zinc alloy shells. This construction ensures optimal high-frequency signal transmission with minimal insertion loss, supporting SAS 3.0 up to 12Gbps per lane. Equipped with comprehensive 360° EMI/RFI braided 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 twinaxial cables are highly susceptible to internal pair skew if bent too sharply. Maintain a minimum bend radius of at least 5 times the cable’s outer diameter (OD) during rack installation.
-
Connector Latching: Always ensure the pull-tab mechanism on the QSFP+ end and the pull-to-release latch on the Mini-SAS HD end are fully engaged with their receptacles to prevent disconnections caused by server fan vibration.
-
Airflow and Cable Routing: To maintain optimal thermal management within the server cabinet, route these bulky high-speed DAC cables utilizing proper cable management arms, avoiding obstruction of server exhaust vents or unshielded AC power lines.
