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LS-SM3125-40C is a 25G SFP28 duplex LC/UPC optical transceiver engineered for long-haul single-mode fiber (SMF) transmissions, delivering pinpoint 1310nm wavelength signaling up to 40km with an optimized maximum power consumption of just 1.8W and integrated DOM capabilities.
| LINK-PP Part Number | LS-SM3125-40C | Vendor Name | LINK-PP |
| Form Factor | SFP28 | Max Data Rate | 25.78Gbps |
| Wavelength | 1310nm | Max Cable Distance | 40km |
| Connector | Duplex LC | Media | SMF |
| Transmitter Type | EML | Receiver Type |
APD/TIA |
| Receiver Sensitivity | -19dBm | Operating Temperature range | 0°C to +70°C |
| Protocols | MSA Compliant, CPRI, eCPRI | Warranty | 5 Years |
LINK-PP LS-SM3125-40C is a 25GBASE-ER SFP28 duplex LC/UPC optical transceiver designed for reliable long-haul single-mode fiber transmissions. It integrates a 1310nm wavelength configuration to achieve extended reach while embedding real-time diagnostic capabilities. The module delivers an efficient and standardized hardware architecture for demanding telecommunication and core enterprise environments.
This module features an advanced EML Laser transmitter paired with a highly sensitive APD/TIA receiver structure. This specialized internal hardware combination ensures optimal optical signal generation and robust reception over extended optical paths. It provides excellent link stability and signal integrity without increasing power consumption.
Engineered to meet modern bandwidth demands, this transceiver delivers a dependable data rate of 25Gbps. It supports seamless aggregation and high-throughput transmission across core network environments. This speed allows operators to scale their network infrastructure efficiently to handle intensive data traffic.
The optical transceiver operates utilizing a precise 1310nm center wavelength designed specifically for single-mode fiber channels. This wavelength choice minimizes dispersion effects to maintain clean optical paths across long spans. It is fully standardized to ensure hassle-free deployment in multi-vendor networking environments.
This single-mode fiber (SMF) module is fully capable of driving optical signals up to a maximum distance of 40km. It acts as a cost-effective solution for metro networks and mid-mile backhaul infrastructures without needing extra amplification. The extended reach bridges regional distribution nodes reliably and efficiently.
Equipped with an industry-standard duplex LC/UPC connector, the transceiver ensures secure and stable physical fiber connections. This design facilitates quick deployment, low insertion loss, and compatibility with standard optical patch cables. The precise UPC polish guarantees minimal back-reflection within the fiber infrastructure.
Featuring integrated Digital Optical Monitoring (DOM), this module provides real-time access to vital operating metrics. Network administrators can continuously track transceiver temperature, laser bias current, and optical power levels. This visibility enables proactive maintenance and ensures long-term operational uptime.
The LINK-PP LS-SM3125-40C is fully certified under ISO 9001, CE, RoHS, and FCC standards to ensure international compliance and environmental safety.
Each optical transceiver undergoes strict physical and optical hardware testing to ensure stable performance and complete compliance with industry standards.
These official credentials validate that our production lines maintain strict manufacturing controls and adhere to global telecommunication safety regulations.
Comprehensive hardware verification guarantees flawless interoperability and plug-and-play performance across a wide range of major brand switches and routers.
Every SFP28 optical transceiver undergoes strict performance evaluations to guarantee total networking stability, and you can discover comprehensive testing insights through the LINK-PP Test Support Center.
Measure central wavelengths to guarantee precise fiber channel alignment.
Analyze transmitter signal integrity to ensure clean data waveforms.
Verify long-term transmission accuracy under full-rate network traffic.
Confirm operational stability across wide environmental thermal ranges.
We provide secure logistics solutions for your optical transceiver orders. Efficient global shipping networks guarantee timely international delivery.
Shield fragile internal components from electrostatic discharge hazards during transit.
Secure transceiver modules inside durable enclosures to prevent physical damage.
Accelerate warehouse fulfillment times to ensure prompt shipment delivery schedules.
Ship parcels worldwide using trusted carriers for dependable network arrival.
This module inserts seamlessly into hot-swappable SFP28 ports, minimizing network downtime during upgrades. LINK-PP LS-SM3125-40C serves as a vital component for long-haul telecommunications, bridging regional distribution nodes and supporting high-capacity data transport across modern enterprise core networks up to 40km away.
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Professional guidance to help you select the optimal LS-SM3125-40C module for your network design and application needs.
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Find quick answers regarding the internal laser architecture, 1310nm signal clarity, and power consumption of the LS-SM3125-40C long-range 25G SFP28 transceiver.
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 25.78Gbps | 25.78Gbps | 25.78Gbps | 25.78Gbps | 25.78Gbps | 10/25.78Gbps |
Wavelength | 1310nm | 1310nm | 1310nm | 1310nm | 1310nm | 850nm |
Connector | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC |
Cable Distance (Max) | 40km | 30km | 2km | 10km | 20km | 100m |
Cable Type | SMF | SMF | SMF | SMF | SMF | MMF |
Receiver Sensitivity | -19dBm | -19dBm | -13.3dBm | -14 to +3dBm | -15 to +3dBm | <-10.3dBm |
Operating Temperature | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | -40 to 85°C | -40°C to +85°C | 0°C to +70°C |
Form Factor | SFP28 | SFP28 | SFP28 | SFP28 | SFP28 | SFP28 |
Transmitter Type | EML | EML | DFB | DFB | DFB | VCSEL |
Receiver Type | APD/TIA | APD | PIN | PIN | PIN | PIN |
Protocols | MSA Compliant, CPRI, eCPRI | MSA Compliant, CPRI, eCPRI | MSA Compliant, CPRI, eCPRI | SFF-8472, SFF-8402, SFF-8432, SFF-8431, CEI-28G-VSR | MSA Compliant, CPRI, eCPRI | SFF-8472, SFF-8024, SFF-8431, SFF-8432 |
Warranty | 5 Years | 5 Years | 5 Years | 5 Years | 5 Years |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Does this SFP28 module work for high-speed storage area networks running 32G Fibre Channel? By J***r on 2026-02-15
A: No, this is specifically tuned for 25G Ethernet and CPRI protocols, not for Fibre Channel environments. By admin on 2026-02-15
Q: What is the maximum guaranteed transmission distance for this SFP28 single-mode optics module? By H***t on 2025-10-30
A: The module safely supports links up to 40km (25GBASE-ER standard) over standard G.652 single-mode fiber, assuming normal splice and connector loss. By admin on 2025-10-31
Q: Will this module overheat if I populate 48 ports side-by-side in a high-density 1U switch? By R***e on 2025-08-28
A: No, this optical module uses an optimized low-power design (under 1.8W) to prevent heat buildup in dense switch layouts. By admin on 2025-08-29
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