Arista Networks QSFP-100G-1SPC Compatible 100G QSFP28 to 1 x 25G SFP28 Passive Copper Twinax Cable

Arista Networks QSFP-100G-1SPC Compatible 100G QSFP28 to 1 x 25G SFP28 Passive Copper Twinax Cable

The QSFP-100G-1SPC compatible series is designed for Arista Networks hosts requiring a 100G DAC connection. Its QSFP28 to SFP28 arrangement is supplied as a factory-terminated passive twinax link without separate optical modules or patch cords. Use the specifications to assess the physical assembly, then follow the exact length and part-number links when preparing a bill of materials or requesting a compatibility check.

Series Part Number: QSFP-100G-1SPCHT Part Number: QSFP-100G-1SPC

Product Highlights

  • HT-manufactured compatible alternative for Arista Networks QSFP-100G-1SPC
  • 100G aggregate connectivity at 25Gbps
  • Interface configuration: QSFP28 to SFP28
  • Passive Twinax / Copper
  • Length configurations covered: 1m (3ft)
  • Conductor specification: 26AWG
  • Power consumption: ≤0.1W
  • Operating temperature: 0 to 70°C (32 to 158°F)

Available Lengths and Corresponding Part Numbers

The documented series configuration is 1m (3ft). Use the relevant OEM reference below together with the HT identity and required length when requesting a quotation. If another length carries a different OEM part number, it must be reviewed and ordered as that distinct configuration.

Compatible OEM Part Numbers

  • QSFP-100G-1SPC01

Specifications

HT Part NumberQSFP-100G-1SPC
ManufacturerHT
Form FactorQSFP28 to SFP28
Max. Data Rate25Gbps
MediaCopper
Cable TypePassive Twinax
Cable Length Options Covered1m (3ft)
Jacket MaterialPVC (OFNR)
Minimum Bend Radius30mm
Wire AWG26AWG
Max. Power Consumption≤0.1W
Modulation FormatQSFP28-1x 25G-NRZSFP28-1x 25G-NRZ
Commercial Temperature Range0 to 70°C (32 to 158°F)
Application25G Ethernet, Data Centers
ProtocolsQSFP28 MSA, SFP28 MSA, SFF-8665, SFF-8402, IEEE 802.3bj, IEEE 802.3by

Applications and Deployment

Passive twinax cables are commonly selected for short switch-to-switch, switch-to-server and accelerator connections within or between nearby racks. With no separate optical conversion stage, they offer a simple low-power physical link. The assembly must nevertheless remain within the length, signaling rate and qualification limits accepted by both hosts. For this series, the listed interface is QSFP28 to SFP28 and the aggregate rate is 100G. The stated application is 25G Ethernet, Data Centers.

Cable Construction and Routing

For this assembly, the conductor specification is 26AWG; the jacket material is PVC (OFNR); the minimum bend radius is 30mm; the operating temperature is 0 to 70°C (32 to 158°F); the power consumption is ≤0.1W. These parameters belong in the installation review rather than being treated as catalogue trivia. Route the cable through its intended managers without tension, avoid pressure close to the connector boots and leave enough space to operate the latches. Any service loop must respect the stated bend limit.

Mixed-Vendor Network Operation

A mixed-vendor link should be documented at both ends, not treated as one generic connection. Confirm which OEM identity each host expects and whether the two ends use the same compatibility requirement. The related brand links below help locate equivalent-length assemblies, while the physical form factor and lane arrangement must still agree across the complete path. For this series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.

Arista Networks Compatibility and Factory Testing

Testing addresses the brand-specific identification as well as the operating link and available diagnostics. The same physical cable family can require a different host identity for another equipment vendor, so the intended platform should be supplied when a deployment combines multiple brands or unusual hardware revisions. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.

Ordering Information

For mixed-vendor projects, identify the equipment at both ends along with the OEM reference, length and quantity. Order each compatibility version under its own part number. If spare assemblies are required, list them separately so labels and test records remain unambiguous. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number QSFP-100G-1SPC identifies the product family; the linked page provides the final length-specific identity.

Quality Assurance and Packaging

Both ends are inspected and the complete assembly is powered up for a functional check before packing. Connectors are protected individually and the cable is secured without tight bends. Optional labels can distinguish host brand, OEM reference and length for easier spares management. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.

Shipping and Lead Time

Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.

Frequently Asked Questions

Is this an original Arista Networks cable?

No. It is an HT-manufactured compatible cable for equipment that specifies QSFP-100G-1SPC, not an original Arista Networks-branded product.

Are different lengths and OEM part numbers separate products?

Yes. Where a length has its own OEM reference, follow the corresponding link above and order that exact part number on its own line. Do not substitute another length only because the connector arrangement is the same.

Does this DAC cable require separate modules at each end?

No. The connector ends and cable form one complete direct-attach assembly. The ends are not detachable standalone transceivers, and the complete product is tested together.

What information helps confirm compatibility?

Provide the equipment manufacturer and model, port type, hardware revision and software release, together with the required OEM reference, length and quantity. Breakout projects should also identify the intended lane configuration.


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