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Engineered for high-speed fiber optic networks, this high-performance transceiver delivers reliable data transmission rates up to 2.5Gbps over single-mode fiber infrastructure. Operating on a single 3.3V power supply, the hot-pluggable module integrates a 1310nm DFB laser and a PIN photodiode, meeting strict SFP Multi-Source Agreement and SFF-8472 industry standards for modern networking environments.
| LINK-PP Part Number | LS-SM312G-20C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 2.5Gbps |
| Wavelength | 1310nm | Max Cable Distance | 20km |
| Connector | Duplex LC | Media | SMF |
| Transmitter Type | DFB | Receiver Type | PIN |
| Receiver Sensitivity | -18dBm | DDM/DOM | Supported |
| TX Power | -6 to +1dBm | RX Power | -20 to -1dBm |
| Operating Temperature Range | 0 to 70°C | Protocols | MSA Compliant |
Featuring a hot-swappable design for effortless deployment, this 2.5G optical transceiver supports low-latency Gigabit transmission over extended distances. It combines energy-efficient power consumption, real-time diagnostic telemetry, and robust electromagnetic shielding to ensure smooth, continuous network operation across standard enterprise and commercial operating temperature ranges.
This compact optical transceiver module provides cost-effective, high-bandwidth connectivity for optical interconnect systems. Built with top-grade transmitter and receiver components, it ensures superior signal integrity, low jitter, and exceptional reliability for demanding data transmission.
Designed specifically to empower telecom infrastructure, Fiber Channel links, and Ethernet switches, this transceiver offers seamless 2.5G data transfer. It optimizes network bandwidth and stabilizes long-haul connectivity across core switches and routing hardware.
Utilizing a precise 1310nm DFB laser transmitter, the module achieves minimal chromatic dispersion over single-mode optical fibers. This specialized wavelength ensures crisp signal transmission and optimal optical performance across medium-reach optical communications.
Capable of spanning reach distances up to 20km over single-mode fiber (SMF), this SFP module eliminates the need for intermediate repeaters, making it an ideal choice for campus backbones and metro networks.
Equipped with an industry-standard duplex LC receptacle, the transceiver allows quick, secure fiber optic cable connections. The rugged latching mechanism guarantees stable insertion and minimal optical return loss during heavy network usage.
Integrated Digital Optical Monitoring (DOM) capabilities provide real-time tracking of critical operational parameters, including laser bias current, supply voltage, operating temperature, and optical output/input power through a standard 2-wire serial interface.
Built under strict quality control management systems, this optical module fully complies with global safety, environmental, and electromagnetic standards, ensuring reliable, eco-friendly performance for mission-critical network infrastructure.
Every optical transceiver undergoes comprehensive multi-stage production screening, including electrical validation, optical parameter calibration, and functional testing to guarantee flawless operation upon installation in enterprise equipment.
The module holds official CE, FCC, UKCA, UL, and REACH certifications, confirming compliance with international safety requirements, electromagnetic compatibility, and strict environmental hazardous substance regulations.
Multi-Source Agreement compliance guarantees seamless hardware interoperability with major network switches, routers, and host devices, ensuring effortless plug and play deployment across modern enterprise network infrastructure environments.
Extensive quality assurance procedures guarantee that every transceiver meets strict optical performance criteria, delivering continuous reliability and long-term durability in active data centers.
Spectral analysis validates precise 1310nm central wavelength alignment and strict side-mode suppression ratio standards.
High-speed oscilloscope testing verifies clean optical eye diagrams with low jitter and excellent extinction ratios.
Comprehensive BER testing confirms error-free data transmission performance exceeding BER thresholds of 1×10⁻¹².
Thermal chamber testing confirms stable optical output and sensitivity across full operating temperature ranges.
Secure packaging and streamlined fulfillment protocols ensure optical transceiver products arrive safely and promptly to support global network installation schedules.
Modules are individually sealed in ESD-shielding anti-static bags to prevent electrostatic damage.
Custom foam cushioning protects optical interfaces against physical impacts during transit.
Efficient warehouse management ensures rapid order handling and prompt shipment dispatch.
Reliable courier partnerships guarantee fast worldwide delivery to your door.
Easily insert the hot-pluggable module into any SFP port on your compatible switch or router, connect a single-mode duplex LC fiber patch cable, and immediately experience reliable 2.5Gbps high-speed optical networking.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LS-SM312G-20C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in 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
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 2.5Gbps | 2.5Gbps | 2.5Gbps | 2.5Gbps | 2.5Gbps | 2.5Gbps |
Wavelength | 1310nm | 1310nm | 1310nm | 1310nm | 1310nm | 1550nm |
Connector | Duplex LC | Duplex LC | Duplex LC | LC duplex | LC duplex | Duplex LC |
Cable Distance (Max) | 20km | 15km | 10km | 40km | 2km | 120km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -6 to +1dBm | -6 to +1dBm | -6 to +1dBm | -2 to +3dBm | -10 to -3dBm | -2 to +3dBm |
Receiver Sensitivity | -20 to -1dBm | -20 to -1dBm | -20 to -1dBm | -20 to -1dBm | -20 to -1dBm | -20 to -1dBm |
Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | DFB | DFB | DFB | DFB 1310nm | FP 1310nm | DFB |
Receiver Type | PIN | PIN | PIN | APD | ||
DDM/DOM | Supported | Supported | Supported | Supported | Supported | Supported |
Protocols | MSA Compliant | MSA Compliant | MSA Compliant | MSA Compliant | MSA Compliant | MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Just to double-check before ordering, what kind of fiber patch cables do we need to wire these up in our server room? By J***n on 2026-05-27
A: You will need standard Single Mode Fiber (SMF) cables terminated with Duplex LC connectors. This setup properly aligns with the module's interface and guarantees optimal signal integrity for the 1310nm wavelength up to the maximum 20km distance. By admin on 2026-05-27
Q: Will this 2.5G SFP 1310nm 20km module play nice with our mixed Cisco and Juniper environment? We've had lock-in issues before. By B***t on 2026-04-29
A: Yes! The Link-PP LS-SM312G-20C is 100% MSA compliant. We’ve tested its multi-brand switch compatibility extensively, ensuring it functions seamlessly in mixed OEM environments without triggering proprietary vendor lock-in errors. By admin on 2026-04-29
Q: We are planning a massive campus fiber networking rollout. Do you offer bulk pricing discounts if we grab 500+ of these optical transceivers? By A***n on 2026-04-20
A: Absolutely. We offer tiered volume pricing specifically for B2B procurement. For a bulk deployment of 500+ units of this 2.5Gbps single mode module, please contact our sales team directly to get a customized, highly competitive quote. By admin on 2026-04-20
Q: This model says 0 to 70°C. Do you guys make a hardened industrial version for outdoor cabinets hitting -40°C? By J***g on 2026-03-07
A: Yes, the LS-SM312G-20C is our commercial/indoor grade version (0 to 70°C). For extreme outdoor cell tower or edge environments, we offer the LS-SM312G-20I, which is the industrial wide-temperature version supporting -40°C to 85°C. By admin on 2026-03-07
Q: Can you confirm the regulatory and industry standards this 2.5G SFP meets? We need it for a strict ISP bid compliance. By C***r on 2026-02-24
A: The module is strictly MSA (Multi-Source Agreement) and SFF-8472 compliant. It also adheres to standard CE, FCC, and RoHS certifications, making it fully compliant for enterprise, telecommunications, and government-grade network infrastructure deployments. By admin on 2026-02-24
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