SFP-H25G-CU1MCisco SFP-H25G-CU1M Compatible 25G SFP28 Passive Copper Twinax Cable, 1m (3ft)
The SFP-H25G-CU1M compatible cable combines 25G DAC connectivity with a defined 1m (3ft) pathway between SFP28 to SFP28 interfaces. It is intended for Cisco equipment and is documented here as a distinct order code, allowing cable schedules, service access and related length selections to be reviewed before installation.
OEM Part Number: SFP-H25G-CU1MHT Part Number: SFP-H25G-CU1M
Product Highlights
- Compatible alternative to Cisco SFP-H25G-CU1M
- 25G connectivity at 25Gbps
- Interface configuration: SFP28 to SFP28
- Fixed length and part number: 1m (3ft), SFP-H25G-CU1M
- Conductor specification: 30AWG
- Minimum bend radius: 21.25mm
Specifications
| HT Part Number | SFP-H25G-CU1M |
|---|---|
| Cisco Compatible | SFP-H25G-CU1M |
| Manufacturer | HT |
| Connector Type | SFP28 to SFP28 |
| Max Data Rate | 25Gbps |
| Minimum Bend Radius | 21.25mm |
| Wire AWG | 30AWG |
| Cable Length | 1m (3.28ft) |
| 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.
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).
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
At 1m (3ft), SFP-H25G-CU1M 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.
Position Within the Length Range
SFP-H25G-CU1M is the shortest of 7 verified length options in this family. It is the preferred choice when the port positions are close and cable slack must be kept to a minimum. The next option is SFP-H25G-CU1.5M at 1.5m (5ft), adding 0.5m for a less direct routing path; selecting it unnecessarily would leave more cable to dress.
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. Quantity and any labeling instructions should be attached specifically to SFP-H25G-CU1M.
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. Volume orders can include customer references on the labels and carton list.
Frequently Asked Questions
Is this an original Cisco cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Cisco SFP-H25G-CU1M.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Will any matching connector operate at the same speed?
Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.
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.
