SFP-H25G-CU2.5MCisco SFP-H25G-CU2.5M Compatible 25G SFP28 Passive Copper Twinax Cable, 2.5m (8ft)
This page covers one precise cable-schedule item: Cisco SFP-H25G-CU2.5M in 2.5m (8ft), supporting 25G operation through SFP28 to SFP28. The complete DAC assembly is identified separately from other lengths and includes verified specifications, change-control-friendly ordering details and live-link factory checks.
OEM Part Number: SFP-H25G-CU2.5MHT Part Number: SFP-H25G-CU2.5M
Product Highlights
- Compatible alternative to Cisco SFP-H25G-CU2.5M
- 25G connectivity at 25Gbps
- Interface configuration: SFP28 to SFP28
- Fixed length and part number: 2.5m (8ft), SFP-H25G-CU2.5M
- Conductor specification: 30AWG
- Minimum bend radius: 21.25mm
Specifications
| HT Part Number | SFP-H25G-CU2.5M |
|---|---|
| Cisco Compatible | SFP-H25G-CU2.5M |
| Manufacturer | HT |
| Connector Type | SFP28 to SFP28 |
| Max Data Rate | 25Gbps |
| Minimum Bend Radius | 21.25mm |
| Wire AWG | 30AWG |
| Cable Length | 2.5m (8.2ft) |
| Jacket Material | PVC (OFNR) |
| Typical Power Consumption | ≤0.5W |
| Power Supply | 3.3V |
| Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3, SFP28 MSA, SFF-8402, Infiniband, EIA 364-1000 |
| Application | 25G Ethernet, Data Center, 5G Wireless |
Cable Construction and Routing
This assembly uses 30AWG conductors, PVC (OFNR) jacket, minimum bend radius 21.25mm. 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 Center, 5G Wireless. Listed interface and protocol references include IEEE 802.3, SFP28 MSA, SFF-8402, Infiniband, EIA 364-1000. 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
The 2.5m (8ft) version is useful when a two-metre run would leave insufficient working slack. Before installation, check the complete horizontal and vertical path so that SFP-H25G-CU2.5M reaches both ports without tension at either connector.
Position Within the Length Range
SFP-H25G-CU2.5M occupies the middle of this family between SFP-H25G-CU2M at 2m (7ft) and SFP-H25G-CU3M at 3m (10ft). 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.
Structured Pathways and Serviceability
Treat the direct-attach assembly as part of the permanent pathway plan even when the link is expected to be temporary. Follow the intended horizontal and vertical managers, maintain the specified bend radius and leave service access around both ports. A small, supported service allowance is preferable to excess slack concealed inside a rack or placed under cable-tie pressure. For this assembly, the listed conductor specification is 30AWG; the minimum bend radius is 21.25mm; the jacket material is PVC (OFNR).
Ordering Information
Include the part number, fixed length, quantity and required pathway or rack grouping in the order information. The host model and firmware release are useful for change-controlled deployments. Different lengths should remain separate order lines so delivered labels and packing records agree with the pathway plan. This page’s fixed configuration is 2.5m (8ft); another length must be quoted under its corresponding part number.
Cisco Compatibility and Factory Testing
Verification covers the physical connectors, expected host identity and an operating link with available diagnostic indications. We distinguish this complete check from a simple continuity test. Platform model and software release can be reviewed in advance where the installation has strict documentation or change-control requirements. The check includes link stability and diagnostic indications, followed by a final inspection of both ends.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. Delivery can be arranged by courier, air freight or sea freight, and goods may instead be handed to an appointed forwarder or shipped on the customer’s courier account.
Quality Assurance and Packaging
After connector inspection and link verification, the assembly is coiled without tight bends and packed with end protection. Labels can cross-reference the customer cable schedule, OEM part number and length. This supports both receiving checks and later moves, adds or changes. Neutral packaging and customer-specific packing documentation are available on request.
Frequently Asked Questions
Is this an original Cisco cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Cisco SFP-H25G-CU2.5M.
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.
Does this order code cover multiple lengths?
No. SFP-H25G-CU2.5M refers here to 2.5m (8ft). Every other verified length has a separate part number and page in the length list.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
