Cisco SFP-H25G-CU1M Compatible 25G SFP28 Passive Copper Twinax Cable, 1m (3ft)

For data-center links that specify Cisco SFP-H25G-CU1M, this 1m (3ft) DAC assembly delivers 25G connectivity through SFP28 to SFP28. It removes separate module-and-patch-cord interfaces while retaining clear mechanical, power and compatibility details for high-density design and installation planning.

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.

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.

Data-Center Design and Airflow

Select the assembly by both reach and rack layout. A direct connection removes separate module-and-patch-cord interfaces, but it still needs a bend-safe pathway and clear connector access. Keep cable bundles from blocking front-panel airflow, account for the listed interface power where applicable and choose a length that supports maintenance without leaving an unmanaged coil. 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.

Quality Assurance and Packaging

Each cable receives connector inspection and a functional link check before it is coiled with bend-safe slack and packed. Protective materials shield the connector housings during transport. Rack or project labels are available to keep length, part number and installation destination aligned. Standard protective packing is used by default, with project documentation arranged when requested.

Ordering Information

Provide the OEM reference, HT part number, fixed length and quantity, together with the intended host interfaces. Rack-based quantities and packaging instructions can be included for larger deployments. Other lengths are separate products and should be entered on their own order lines. Quantity and any labeling instructions should be attached specifically to SFP-H25G-CU1M.

Cisco Compatibility and Factory Testing

Compatibility confirmation combines host identification with actual link establishment and diagnostic checks. The assembly is prepared for the stated OEM reference rather than selected only by connector shape. For a new data-center deployment, the equipment model, port mode and software release provide the most useful basis for a pre-order review. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.

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.

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.

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.

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. 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.