Arista Networks CAB-Q-Q-100G-1.5M Compatible 100G QSFP28 4 x 25G NRZ Passive Copper Twinax Cable, 1.5m (5ft)
For project documentation, Arista Networks CAB-Q-Q-100G-1.5M and this cable’s physical length should be recorded together. The product described here is a 1.5m (5ft) DAC assembly for 100G links, using QSFP28 to QSFP28. Its OEM cross-reference, HT part number, specification table and packing options support traceable ordering and installation records.
OEM Part Number: CAB-Q-Q-100G-1.5MHT Part Number: CAB-Q-Q-100G-1.5M
Product Highlights
- Compatible alternative to Arista Networks CAB-Q-Q-100G-1.5M
- 100G connectivity at 100Gbps
- Interface configuration: QSFP28 to QSFP28
- Fixed length and part number: 1.5m (5ft), CAB-Q-Q-100G-1.5M
- Cable construction: Passive Twinax
- Conductor specification: 30AWG
- Maximum power consumption: ≤0.5W
- Minimum bend radius: 33.5mm
Specifications
| HT Part Number | CAB-Q-Q-100G-1.5M |
|---|---|
| Arista Networks Compatible | CAB-Q-Q-100G-1.5M |
| Manufacturer | HT |
| Form Factor | QSFP28 to QSFP28 |
| Max. Data Rate | 100Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length | 1.5m (4.92ft) |
| Jacket Material | PVC (OFNR) |
| Minimum Bend Radius | 33.5mm |
| Wire AWG | 30AWG |
| Max. Power Consumption | ≤0.5W |
| Modulation Format | 4x 25G-NRZ to 4x 25G-NRZ |
| Power Supply | 3.3V |
| MTBF | ≈50 Million Hours |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Application | 100G Ethernet |
| Protocols | QSFP28 MSA, SFF-8662, IEEE 802.3 |
Signal and Lane Configuration
The listed modulation format is 4x 25G-NRZ to 4x 25G-NRZ. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.
Passive Copper Operation
A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.
Length Selection and Installation Planning
The additional half metre beyond a one-metre assembly gives CAB-Q-Q-100G-1.5M useful routing flexibility when the ports are not directly aligned. It can accommodate a different rack unit or a short service loop, but excess cable should be dressed loosely rather than folded into a tight coil.
Position Within the Length Range
CAB-Q-Q-100G-1.5M occupies the middle of this family between CAB-Q-Q-100G-1M at 1m (3ft) and CAB-Q-Q-100G-2M at 2m (7ft). It adds 0.5m over the shorter option for extra routing clearance, while the next longer version adds another 0.5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
Project Documentation and Cable Identification
Large deployments are easier to audit when the order code, physical length and endpoint record agree. Keep the OEM reference in the compatibility document and use the HT part number on the packing list. Where several lengths arrive together, labels and carton groups can be arranged by rack or port plan so installers do not have to identify cables by appearance alone. For this assembly, the listed conductor specification is 30AWG; the minimum bend radius is 33.5mm; the stated power consumption is ≤0.5W; the jacket material is PVC (OFNR).
Power and Thermal Planning
The rated power consumption is ≤0.5W. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.
Cable Construction and Routing
This assembly uses 30AWG conductors, PVC (OFNR) jacket, minimum bend radius 33.5mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.
Network and Protocol Considerations
The intended application is 100G Ethernet. Listed interface and protocol references include QSFP28 MSA, SFF-8662, IEEE 802.3. Confirm that the host firmware and port configuration support the same operating mode.
Arista Networks Compatibility and Factory Testing
Factory verification links the compatibility identity to the exact physical assembly described on this page. Identification, connector condition and live link behavior are checked before packing. Customers can submit equipment and firmware details with the project documentation for a more specific pre-order compatibility review. Where supported by the host, link stability and diagnostic indications are reviewed together with the established link.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Arista Networks CAB-Q-Q-100G-1.5M.
What details assist a compatibility review?
Provide the equipment manufacturer, model, port type, hardware revision and software release, together with the OEM reference, required length and quantity.
How should an unused assembly be stored?
Protect both connector ends, keep the cable in a loose bend-safe coil and retain its part-number label so the length and compatibility identity remain traceable.
Can different brands be connected with the same assembly?
Only where both hosts explicitly support the complete interface and compatibility arrangement. Document each end and select the appropriate brand-specific product when required.
Ordering Information
Use the listed HT part number for ordering and retain the OEM reference as the host-compatibility cross-reference. Send quantities by length, along with any rack-based packing or label instructions. If the project has mixed equipment, include the host model for each group rather than relying only on the aggregate cable rate. Keep CAB-Q-Q-100G-1.5M associated with 1.5m (5ft) throughout the order and receiving record.
Shipping and Lead Time
Available stock is generally dispatched within one to three working days after order confirmation, with production lead times advised for larger quantities. Worldwide courier services are available, with air or sea freight for consolidated shipments; freight-collect delivery and coordination with a customer’s logistics provider can be arranged.
Quality Assurance and Packaging
Inspection and link testing are completed before the cable enters its protective packaging. Project orders can be packed and labelled by length, rack or customer reference, with packing documentation that makes received quantities straightforward to reconcile against the installation schedule. Neutral packaging and customer-specific packing documentation are available on request.
