
Designed for 25G Ethernet, data center interconnect and 5G transport networks, the 10/25G SFP28 SFP-10/25G-CSR-S 400m 850nm Duplex LC/UPC Module, Cisco provides 25Gbps throughput in a SFP28 form factor. It operates at 850nm over MMF through a Duplex LC connector and supports link lengths up to 400m@OM4/300m@OM3. The module meets SFF-8472, SFF-8024, SFF-8431, SFF-8432, IEEE802.3by and includes digital diagnostic monitoring for live status readout.
Product Highlights
- SFP28 form factor, 25Gbps data rate
- Wavelength: 850nm
- Connector: Duplex LC
- Reach: up to 400m@OM4/300m@OM3
- Fiber media: MMF
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | SFP-10/25G-CSR-S |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP28 |
| Max Data Rate | 25Gbps |
| Wavelength | 850nm |
| Max Cable Distance | 400m@OM4/300m@OM3 |
| Connector | Duplex LC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | Pin |
| TX Power | -6.4~2.4dBm |
| Receiver Sensitivity | <-6dBm |
| Power Budget | -0.4dB |
| Receiver Overload | 2.4dBm |
| Power Consumption | ≤1W |
| Extinction Ratio | >2dB |
| CDR (Clock and Data Recovery) | TX and RX Built-in CDR |
| FEC Function | Support RS-FEC |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8472, SFF-8024, SFF-8431, SFF-8432, IEEE802.3by |
| Core Size | 50/125 µm |
| Packaging Technology | COB Packaging |
| DOM | Supported |
Applications
Built for 25G Ethernet, data center interconnect and 5G transport networks, this SFP28 module carries 25Gbps over MMF up to 400m@OM4/300m@OM3 per link. With its Duplex LC optical interface, the module works directly with the MMF infrastructure already installed in most facilities. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of SFP-10/25G-CSR-S.
Standards and Compatibility
This product is designed and tested to comply with SFF-8472, SFF-8024, SFF-8431, SFF-8432, IEEE802.3by. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number SFP-10/25G-CSR-S.
Ordering Information
Our part number for this module is SFP-25GMCSR-85. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
Packing Details
Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.
Customization Service
Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.
Logistics
Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.
Quality and Testing
Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.



