SFP-10/25G-LR-S – 10/25GBASE-LR SFP28 – 10 km G.652 SMF – 0 to 70°C Commercial Temperature
Why Layer23-Switch
Stocked, Shipped and Supported by One Team
Ships in 1 Business Day
In-stock orders leave our Hong Kong or U.S. warehouse within 1 business day after payment, with tracking by email.
LSCare Warranty
3years on enterprise equipment
Free CCIE Support
Certified engineers help before and after you buy. Reply within 1 business day by email or live chat.
Verify Before You Pay
100%factory-sealed
Get label and serial photos before shipment, and check every serial number with Cisco.
SFP-10/25G-LR-S Description
The SFP-10/25G-LR-S is a Cisco 10/25GBASE-LR SFP28 transceiver for single-mode fiber links between buildings and equipment rooms. The module reaches 10 km at both 10G and 25G over G.652 single-mode fiber at 1310 nm on a dual LC/PC connector, with a 0 to 70°C case rating and 1.3W maximum power draw. The 25G rate requires RS-FEC on the host port, and patch cords must have PC or UPC end faces because APC is not supported.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Optic type |
10/25GBASE-LR SFP28 |
|
Data rate |
10G or 25G |
|
Reach |
10 km at 10G and 25G |
|
Fiber |
G.652 single-mode fiber |
|
Wavelength |
1310 nm |
|
Connector type |
Dual LC/PC |
|
Host FEC at 25G |
RS-FEC required |
|
Operating case temperature |
0 to 70°C (commercial) |
|
Maximum power consumption |
1.3W |
Application Scenarios
Between two campus buildings, a Catalyst 9300 or Catalyst 9500 switch uses the module on an SFP28 port to carry 10G or 25G traffic over single-mode fiber runs of up to 10 km.
A data center with Nexus 9300 leaf switches in one hall can run 25G links to Nexus 9500 spine switches in another hall over single-mode fiber, with one module at each end.
Product Comparison
|
Parameter |
SFP-10/25G-LR-S | |||
|---|---|---|---|---|
|
Cable type |
G.652 single-mode |
G.652 single-mode |
Multimode (OM3/OM4) |
G.652 single-mode |
|
Cable distance |
10 km |
10 km; up to 15 km as an engineered link below 9.3 dB insertion loss with RS-FEC |
300 m on OM3, 400 m on OM4 |
40 km; links beyond 30 km are engineered links |
|
Wavelength |
1310 nm |
1310 nm |
850 nm |
1310 nm |
|
FEC at 25G |
RS-FEC required for 25G operation |
RS-FEC for full reach; 3.5 km with BASE-R FEC, 1.5 km without FEC |
RS-FEC for full reach; 70/100 m on OM3/OM4 with BASE-R FEC, 30/50 m without FEC |
RS-FEC for full reach |
|
Operating case temperature |
0 to 70°C |
-40 to 85°C |
0 to 70°C |
-40 to 85°C |
|
Maximum power consumption |
1.3W |
1.3W |
1.2W |
1.5W |
SFP-10/25G-LR-S and SFP-10/25G-LR-I share the same 1310 nm optics and 10 km of G.652 single-mode reach, but SFP-10/25G-LR-S is rated 0 to 70°C while SFP-10/25G-LR-I is rated -40 to 85°C. Sites outside 0 to 70°C, CPRI rates 7 to 10, or spans of up to 15 km as an engineered link below 9.3 dB insertion loss with RS-FEC need the industrial module, which Cisco’s TMG host list shows for no Catalyst 9000 family, while SFP-10/25G-LR-S is listed for eight. Multimode plant on OM3 or OM4 calls for SFP-10/25G-CSR-S, which keeps both rates to 300 m or 400 m. Single-mode spans beyond 15 km, up to 40 km, call for SFP-25G-ER-I, which is 25G only.
Ordering Checklist
- Host support: Confirm the target switch or router lists SFP-10/25G-LR-S in the Cisco TMG matrix, with its minimum software release. TMG lists hosts per transceiver PID, so support for another 25G optic does not cover this one.
- Fiber and connector: Use duplex G.652 single-mode fiber with LC patch cords that have PC or UPC end faces, not APC. The optic uses a dual LC/PC connector and does not support APC patch cords.
- RS-FEC on 25G ports: Enable RS-FEC on both host ports of a 25G link. The datasheet requires RS-FEC on the host ports for 25G operation.
- Temperature rating: Keep the module case within 0 to 70°C where it is installed. TMG lists this optic at 0 to 70°C case temperature, the commercial range.
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | SFP-10/25G-LR-S | Cisco ordering description | 10/25GBASE-LR SFP28 Module for SMF |
| Form factor | SFP28 | Data rate | 10G and 25G |
| Cable type | SMF | Fiber standard | G.652 |
| Wavelength | 1310 nm | Cable distance | 10 km at 10G and 25G |
| Connector type | Dual LC/PC | Patch cord connectors | PC or UPC only; APC not supported |
| Host FEC requirement | RS-FEC on host ports for 25G operation | Max power consumption | 1.3W |
| Pull tab / bail latch color | Blue | Transmit power (10G) | +0.5 dBm maximum, -8.2 dBm minimum |
| Receive power (10G) | +0.5 dBm maximum, -14.4 dBm minimum | Wavelength range (10G) | 1260 to 1355 nm |
| Transmit power (25G) | +2.0 dBm maximum, -7.0 dBm minimum | Receive power (25G) | +2.0 dBm maximum, -13.3 dBm minimum |
| Wavelength range (25G) | 1295 to 1325 nm | Operating case temperature | 0°C to 70°C (32°F to 158°F), commercial range |
| Storage temperature | -40°C to 85°C (-40°F to 185°F) | DOM | DOM hardware capable |
| FCoE | Supported with host software support | Platform support | Cisco switches; host list in the Cisco Transceiver Module Group (TMG) Compatibility Matrix |
| Standards | SFF-8402, SFF-8472, IEEE 802.3-2015, IEEE P802.3by, IEEE P802.3cc | Safety certifications | Laser Class 1 21CFR-1040 LN#50 7/2001; Laser Class 1 IEC60825-1 |
| Environmental compliance | RoHS 6 |
Get More Information
Need pricing, stock, or shipping details for the SFP-10/25G-LR-S ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email [email protected] for a fast quotation.
Quality Certifications
Customer Reviews
Questions & Answers
-
Does SFP-10/25G-LR-S support FCoE?
-
How does SFP-10/25G-LR-S connect to a QSFP-100G-PSM4-S port at 25G?
-
Which 10G optic is the listed link partner of SFP-10/25G-LR-S at 10G?
-
What operating temperature and power draw does SFP-10/25G-LR-S have?
Warranty
Layer23-Switch.com offers genuine, high-quality ICT products at competitive wholesale prices—ensuring exceptional value without compromising quality.
All items are brand new, original, and factory-sealed.
Upon request, each unit can be fully tested and verified by a Cisco CCIE-certified engineer to ensure perfect working condition before shipment.
Our Cisco CCIE-certified experts provide free professional support via phone, email, online chat, or remote login—helping you deploy and troubleshoot with confidence.
If you are not satisfied with your purchase, you may request an exchange or full refund. Our customer service team will guide you through the return process quickly and smoothly. Visit Return Policy page for more information.
We support multiple secure payment and logistics options, backed by industry-leading verification:












Visit How to Pay page for more information
Extended, Worry-Free Warranty Coverage Factory New Sealed Enterprise Hardware:
· 3 Years Factory New Sealed
Visit Warranty Policy page for more information
Verify, plan, and comparewith confidence
Use practical tools to check device details, review lifecyclemilestones, and compare hardware before you buy.
Standard Services
Personalized Service, Superior Product Maintenance for Ultimate Satisfaction.
- Projects and Technical Support
- Easy Purchasing Supply
- Product Lifecycle Protection
- Exclusive F3 Team Support
Customized Support for Your Needs with CCIE, HCIE, HPE ASE, etc.

Was worried about buying from a third party, but the product is 100% genuine.
Layer23 has been my go-to source for over a year now.
Glad I trusted my research. Layer23 was the right choice.
Locked and loaded… into the SFP port. Link up immediately. Professional service.
Superior performance. Complete global saturation… of network coverage achieved.