Description
SFF-8639 female Gen3 8GT/s with15pin(4pin) power to SFF-8643 *2 Internal Cable Assembly – U.2 to Dual HD Mini SAS 4i for High-Speed NVMe/SAS Integration
The SFF-8639 female to dual SFF-8643 internal cable assembly is a high-performance solution designed to connect a single U.2 (SFF-8639) interface to two Mini SAS HD 4i (SFF-8643) ports. With support for PCIe Gen3 at 8 GT/s per lane, integrated 15-pin SATA power and 4-pin sideband signaling, this cable enables efficient data and power transmission for enterprise-grade NVMe or SAS SSDs in high-density server and storage environments.
Key Features:
- Connector Configuration:
- SFF-8639 female (U.2 interface with 15-pin SATA power and 4-pin sideband)
- 2 × SFF-8643 plugs (Mini SAS HD 4i)
- Internal Cable Assembly: Designed for internal use in server chassis, storage enclosures, and embedded platforms.
- Wire Gauge Range: Supports AWG 30 to AWG 28, balancing flexibility and signal integrity.
- Controlled Impedance:
- 85 ohm for PCIe lanes
- 100 ohm for SAS lanes
- High-Speed Data Transfer:
- Supports PCIe Gen3 at 8 GT/s per lane
- Compatible with SAS 3.0 (12 Gbps) for storage applications
- Power Integration: Includes 15-pin SATA power and 4-pin sideband for drive management, LED indicators, and staggered spin-up.
- Dual Port Fanout: Enables simultaneous connectivity to two SAS targets or backplanes from a single U.2 source.
- Robust Shielding: Provides excellent EMI/RFI protection for high-speed signal integrity.
- RoHS Compliant: Manufactured in accordance with environmental standards for hazardous substances.
Applications:
- Enterprise Servers: Connects U.2 NVMe or SAS SSDs to dual Mini SAS HD controllers or backplanes.
- Storage Appliances: Facilitates hybrid NVMe/SAS configurations with integrated power and sideband control.
- Data Centers: Supports scalable, low-latency storage architectures with dual-channel routing.
- RAID & JBOD Enclosures: Enables efficient drive-to-host communication with built-in power and management support.
- Industrial & Embedded Systems: Provides compact, high-speed connectivity for mission-critical storage modules.








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