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| Part No. | LS-SM312G-15C |
| Form Factor | SFP |
| Max Data Rate | 2.5Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 15km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -5 ~ 0dBm |
| Receiver Sensitivity | < -18dBm |
| Receiver Overload | -3dBm |
| EMC Support | Supported |
| DDM/DOM | Supported |
| Protocols | MSA Compliant |
| Temperature Range | 0 to 70°C / -40 to 85°C |
| Warranty | 5 Years |
Drawing on over 10 years of experience in chips and modules, we integrate fast speeds, small size, power savings, and high performance in every module. We provide a full series of optical modules for fixed access, wireless access, carrier Ethernet, wavelength division multiplexing (WDM), and data communication networks.
| Part Number | Data Rate | Wavelength | Distance | Media | DDM |
|---|---|---|---|---|---|
| LS-MM852G-S3C | 2.5Gbps | 850nm | 300m | Multi-mode | Yes |
| LS-MM852G-S5C | 2.5Gbps | 850nm | 550m | Multi-mode | Yes |
| LS-SM312G-02C | 2.5Gbps | 1310nm | 2km | Single Mode | Yes |
| LS-SM312G-10C | 2.5Gbps | 1310nm | 10km | Single Mode | Yes |
| LS-SM312G-15C | 2.5Gbps | 1310nm | 15km | Single Mode | Yes |
| LS-SM312G-20C | 2.5Gbps | 1310nm | 20km | Single Mode | Yes |
| LS-SM552G-20C | 2.5Gbps | 1550nm | 20km | Single Mode | Yes |
| LS-SM312G-40C | 2.5Gbps | 1310nm | 40km | Single Mode | Yes |
| LS-SM552G-40C | 2.5Gbps | 1550nm | 40km | Single Mode | Yes |
| LS-SM552G-80C | 2.5Gbps | 1550nm | 80km | Single Mode | Yes |


End-to-end DWDM devices including active modules and optical passive devices, such as optical amplifiers (EDFA & RFA), Mux & Demux, OPM, ROADM, and more.
Meeting demand for mass data transmission in data centers with high-speed optical modules ranging from 10G to 800G.
High reliability solutions for 4G/5G systems including Dark Fiber, WDM, Radio over Fiber, and High Speed Mid-haul/Back-haul scenarios.
Total solutions for global communication networks covering all-optical or combined optical-copper access products.
Optical cable O&M solutions integrating optical line protection (OLP) and monitoring systems (OLM) for stable operation.



As a specialized manufacturer of magnetic telecom and network components, we are certified by ISO9001:2000, ROSH, REACH, CE, and UL. Our facility features advanced manufacturing and testing equipment. Established in 1997, we maintain a robust production capacity to ensure timely delivery. We provide a complete series of optical modules and high-speed interconnect solutions worldwide using the latest optoelectronic technologies.


We are a specialized manufacturer of magnetic telecom and networking components, including RJ45 connectors, lan transformers, and SFP modules.
Yes, we can offer free samples to test quality, though shipping fees apply.
Items in stock are ready to ship; mass production typically takes 15-30 days.
We provide a one-year guarantee and offer 24-hour online technical support.
Yes, we accept custom orders. Please contact us for a detailed discussion.
We have nearly two decades of production experience and maintain long-term partnerships with major global technology leaders.