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Black SFP28 passive twinax cable with zinc die-cast connectors, 4m length

Tripp Lite

Tripp Lite N28004M28BK SFP28 25GbE passive twinax cable 4m

SKU CH-8S1K-DG4R3 MPN N28004M28BK

A 4 m passive twinax cable with SFP28 connectors for 25 Gbps links, compliant with SFF-8432 and compatible with Cisco, Arista, Dell, Juniper and Mellanox equipment

  • 25 Gbps throughput for high-speed data centre links
  • 4 metre passive twinax reaches adjacent racks without transceivers
  • 30 AWG copper with zinc die-cast connectors resists EMI noise
  • SFF-8432 and SFP28 MSA compliant for multi-vendor interoperability
  • Ergonomic pull tabs enable quick hot-swap changes in dense racks

25GbE SFP28 Passive Twinax Cable

The Tripp Lite N28004M28BK is a 4 metre SFP28 to SFP28 direct-attach copper cable rated for 25 Gbps Ethernet links. It is built for network engineers and data-centre installers who need a low-power, cost-effective alternative to fibre for short-range switch-to-server or switch-to-switch connections.

SFF-8432 Compliance and 30 AWG Conductors

The cable conforms to the SFF-8432 specification and uses zinc die-cast SFP28 connectors with flexible 30 AWG conductors that resist EMI line noise. This standard and conductor gauge determine whether the assembly will operate reliably in a given 25GbE port at the full four-metre reach.

Low-Power Passive Operation

As a passive twinax assembly it draws no external power and adds negligible heat to the rack, keeping airflow and cooling demands unchanged. The design targets silent, reliable operation in crowded network cabinets where hot-swap pull tabs allow quick insertion or removal without disrupting adjacent links.

Highlights

  • 25 Gbps throughput for high-speed data centre links
  • 4 metre passive twinax reaches adjacent racks without transceivers
  • 30 AWG copper with zinc die-cast connectors resists EMI noise
  • SFF-8432 and SFP28 MSA compliant for multi-vendor interoperability
  • Ergonomic pull tabs enable quick hot-swap changes in dense racks

Specifications

No published specifications for this item yet.

Questions about this item

What does 25 Gbps mean for real-world throughput in a server rack?

The cable carries 25 Gbps of raw bandwidth between SFP28 ports, which is the headline rate for 25GbE links in data-center switches, servers and storage arrays.

Which standard governs the SFP28 interface and what does it limit?

It conforms to SFF-8432, the SFP28 MSA that defines mechanical, electrical and low-speed signalling for 25 Gbps passive copper links up to the supported reach.

Will the 4 m length and 30 AWG conductors fit my crowded patch panel?

At 4 m with flexible 30 AWG twinax and ergonomic pull tabs, the cable routes easily in dense racks and allows hot-swap insertion or removal without disturbing adjacent connections.

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