QSFP28 to SFP28-100G-DAC-1M3FT 100G QSFP28 to 1 x 25G SFP28 Passive Copper Twinax Cable, 1m (3ft)
For buyers working from an equipment parts list, QSFP28 to SFP28-100G-DAC-1M3FT identifies more than a connector style. It refers here to a 1m (3ft) DAC cable for Generic hosts, supporting 100G operation with QSFP28 to SFP28. The sections below separate the OEM cross-reference, physical specification and HT factory checks for straightforward purchasing review.
OEM Part Number: QSFP28 to SFP28-100G-DAC-1M3FTHT Part Number: QSFP28 to SFP28-100G-DAC-1M3FT
Product Highlights
- HT-manufactured DAC assembly in 1m (3ft)
- 100G connectivity at 25Gbps
- Interface configuration: QSFP28 to SFP28
- Fixed length and part number: 1m (3ft), QSFP28 to SFP28-100G-DAC-1M3FT
- Cable construction: Passive Twinax
- Conductor specification: 26AWG
- Maximum power consumption: ≤0.1W
- Minimum bend radius: 30mm
Specifications
| HT Part Number | QSFP28 to SFP28-100G-DAC-1M3FT |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 to SFP28 |
| Max. Data Rate | 25Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length | 1m (3ft) |
| Jacket Material | PVC (OFNR) |
| Minimum Bend Radius | 30mm |
| Wire AWG | 26AWG |
| Max. Power Consumption | ≤0.1W |
| Modulation Format | QSFP28-1x 25G-NRZSFP28-1x 25G-NRZ |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Application | 25G Ethernet, Data Centers |
| Protocols | QSFP28 MSA, SFP28 MSA, SFF-8665, SFF-8402, IEEE 802.3bj, IEEE 802.3by |
Signal and Lane Configuration
The listed modulation format is QSFP28-1x 25G-NRZSFP28-1x 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.
Power and Thermal Planning
The rated power consumption is ≤0.1W. 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 26AWG conductors, PVC (OFNR) jacket, minimum bend radius 30mm. 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 25G Ethernet, Data Centers. Listed interface and protocol references include QSFP28 MSA, SFP28 MSA, SFF-8665, SFF-8402, IEEE 802.3bj, IEEE 802.3by. Confirm that the host firmware and port configuration support the same operating 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
At 1m (3ft), QSFP28 to SFP28-100G-DAC-1M3FT is a practical choice for direct connections within one rack. Route the cable along the intended management path rather than pulling it diagonally across adjacent connectors, and leave enough clearance for insertion, removal and front-panel airflow.
Procurement and Port-Mapping Review
A useful purchase order should identify the host platform, the expected OEM code and the exact cable length as separate pieces of information. This prevents a physically similar assembly from being substituted when the port identification or reach is different. For mixed-length installations, prepare one order line per part number and reconcile each delivered cable with its intended pair of ports. For this assembly, the listed conductor specification is 26AWG; the minimum bend radius is 30mm; the stated power consumption is ≤0.1W; the jacket material is PVC (OFNR).
Generic Compatibility and Factory Testing
Our procurement-oriented compatibility check begins with the OEM reference and ends with a live host link. We record the physical length separately from the identification configuration, so the cable supplied for this page remains the stated version rather than a generic length substitute. Where supported by the host, link stability and diagnostic indications are reviewed together with the established link.
Ordering Information
For a clear bill of materials, quote the OEM reference, HT part number, length and quantity on the same line. Add the switch or server model and software release when a pre-order review is required; project labels can repeat those details for receiving and installation teams. Quantity and any labeling instructions should be attached specifically to QSFP28 to SFP28-100G-DAC-1M3FT.
Quality Assurance and Packaging
Before packing, the assembly is checked for connector condition, identification and link operation. Cables for multi-line orders can be labelled and grouped by part number, making it easier to match each length to the procurement record without opening every protective bag. Neutral packaging and customer-specific packing documentation are available on request.
Frequently Asked Questions
Is this an original equipment manufacturer cable?
No. It is manufactured by HT under our own manufacturer identity.
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.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. International express, air cargo and sea freight can be selected according to destination and carton volume; customer courier accounts and nominated forwarders are also accepted.