
Designed for 25G Ethernet, data center interconnect and 5G transport networks, the 25G SFP28 SFP-25G-BX40U-I 40km 1270nm-TX/1310nm-RX Simplex LC/UPC Industrial Module, Cisco provides 25.78Gbps throughput in a SFP28 form factor. It operates at 1270nm-TX/1310nm-RX over SMF through a Simplex LC connector and supports link lengths up to 40km. The module meets SFF-8472, SFF-8402, SFF-8432, SFF-8431, CEI-28G-VSR and includes digital diagnostic monitoring for live status readout.
Product Highlights
- SFP28 form factor, 25.78Gbps data rate
- Wavelength: 1270nm-TX/1310nm-RX
- Connector: Simplex LC
- Reach: up to 40km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | SFP-25G-BX40U-I |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP28 |
| Max Data Rate | 25.78Gbps |
| Wavelength | 1270nm-TX/1310nm-RX |
| Max Cable Distance | 40km |
| Connector | Simplex LC |
| Media | SMF |
| Transmitter Type | DFB BiDi |
| Receiver Type | APD |
| TX Power | 0~6dBm |
| Receiver Sensitivity | <-18dBm |
| Power Budget | 18dB |
| Receiver Overload | -6dBm |
| Power Consumption | <1.5W |
| Extinction Ratio | 4dB |
| DDM/DOM | Supported |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| CDR | TX & RX Built-in CDR |
| FEC Function | Not Supported |
| Protocols | SFF-8472, SFF-8402, SFF-8432, SFF-8431, CEI-28G-VSR |
Applications
The 25G SFP28 SFP-25G-BX40U-I 40km 1270nm-TX/1310nm-RX Simplex LC/UPC Industrial Module, Cisco is used in 25G Ethernet, data center interconnect and 5G transport networks, where it provides a 25.78Gbps link over SMF up to 40km. The Simplex LC interface and 1270nm-TX/1310nm-RX optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. It is interoperable with Cisco platforms and replaces the Cisco part SFP-25G-BX40U-I directly.
Standards and Compatibility
This product is designed and tested to comply with SFF-8472, SFF-8402, SFF-8432, SFF-8431, CEI-28G-VSR. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number SFP-25G-BX40U-I.
Ordering Information
Order this product as SFP-25G23-BX40-I-CISCO. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging
Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.



