Description

Farsince 100G QSFP28 passive direct‑attach copper (DAC), 30AWG twinax assembly designed for short‑distance 100GbE links. The cable integrates two hot‑pluggable QSFP28 modules and transports four 25G NRZ lanes (4×25G) at an aggregate 100 Gbps. It connects QSFP28 ports on switches, servers, NICs and storage at line rate without separate optics, making it a practical choice for top‑of‑rack patching, spine/leaf interconnects and adjacent‑rack runs in data‑center and HPC environments.

With no active components, the passive design adds virtually no latency and minimizes heat. Controlled‑impedance copper, robust shielding and tight pair skew deliver low insertion loss and crosstalk, while a 33.5 mm minimum bend radius supports clean routing in dense racks. Die‑cast shells and pull‑tab latches enable fast, tool‑free service. Each assembly is tested for interoperability and conforms to QSFP28 MSA and 100GBASE‑CR4 electrical specs. Farsince offers vendor‑specific coding, custom lengths and labeling, along with batch test reports to support consistent deployment and maintenance.

Specifications

• Product Type: 100G QSFP28 Passive Direct Attach Copper (DAC)
• Connector Type: QSFP28 to QSFP28
• Data Rate: 100 Gbps aggregate (4×25G NRZ)
• Wire Gauge: 30 AWG
• Cable Structure: Shielded twinax, passive
• Minimum Bend Radius: 33.5 mm
• Jacket Material: PVC (OFNR)
• Operating Temperature: 0 to +70°C
• Installation: Hot‑pluggable, pull‑tab latch
• Application: In‑rack and adjacent‑rack 100GbE switch‑to‑switch/server links
• Compatibility: IEEE 802.3 100GBASE‑CR4; QSFP28 MSA; SFF‑8636 memory map
• Power Design: No active components; host 3.3 V for ID, ≤0.5 W
• Compliance: RoHS, REACH
• Customization: Vendor coding, labeling and length options; batch test reports