All Products
Services
Support
About Us
Resources
Mind your business with a variety of trusted payment options.
Use order number or tracking number to check shipping status.
Get your quote fast and offer you more professional service.
Help manage your budget & expenditure better.
Free samples support, achieve your test results efficiently.
Professional team support and service, to solve your problems in time.
Ask us whatever you care, we will help you 24/7.
Get your quote fast and offer you more professional service.
Meet us and know our mission, belief, service and more.
Find our locations and get connected with us closely.
Quality management, testing, compatibility and global compliance.
Download ISO, CE, FCC, UL, RoHS and REACH certificates by product line.
Lab tour, optical test bed, compatibility tool and test requests.
Find out the latest news and events around l-p.com
Deep dive into technical guides, industry standards, and SFP compatibility insights.
Detailed product benchmarks and side-by-side comparisons to help you choose the right module.
Explore real-world connectivity solutions for data centers, enterprises, and telecom networks.
Essential tips on choosing data rates, transmission distances, and connector types.
New Customer? Create an account
The LINK-PP LS-SC31551G-20C is a premium 1G BiDi SFP transceiver engineered for exceptional fiber optic communication. This Gigabit Ethernet optical module features a simplex SC connector, utilizes a reliable FP laser alongside a PIN detector, and supports advanced WDM technology. It guarantees stable, high-speed network connectivity within demanding commercial temperature environments.
| LINK-PP Part Number | LS-SC31551G-20C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1310nm-TX/1550nm-RX | Max Cable Distance | 20km |
| Connector | Simplex SC | Media |
SMF |
| Transmitter Type | FP | Receiver Type | PIN |
| TX Power | -9 to 0dBm | RX Power | -23 to -1dBm |
| Receiver Sensitivity | -23dBm | Receiver Overload | -3dBm |
| DOM Support | Yes | Operating Temperature Range |
0 to 70°C |
This single-mode SFP transceiver offers an impressive array of advanced networking features for modern telecommunications. Engineered with a convenient hot-pluggable design, it allows seamless system upgrades. The BiDi optical module maximizes existing fiber infrastructure, delivering cost-effective and highly efficient fiber optic communication solutions.
Functioning as a robust Gigabit BIDI transceiver, this pluggable optical module provides superior signal integrity. It serves as an essential networking component for enterprise architectures, ensuring consistent single-mode fiber transmission across diverse optical communication setups.
Designed to meet rigorous data center connectivity demands, this 1000BASE-BX SFP guarantees seamless data transfer. It effectively handles enterprise routing tasks, optimizing networking infrastructure with reliable bandwidth and minimizing latency during high-speed gigabit network operations.
Utilizing advanced WDM technology, this optical transceiver operates with a 1310nm transmitter and 1550nm receiver. This bidirectional transmission capability allows independent data streams over a single fiber, drastically reducing cable costs for telecommunication networking projects.
Engineered for extended reach, this long-haul SFP easily achieves a 20km transmission distance. This impressive long-range fiber capability makes it the perfect solution for metropolitan area networks, campus backbones, and wide-area telecommunication bridging applications.
Featuring a standard simplex SC connector, this fiber optic interface ensures secure and precise optical alignment. The single-fiber SFP design simplifies patching management while delivering outstanding pluggable module durability for continuous gigabit Ethernet networking tasks.
Equipped with Digital Optical Monitoring, this DOM SFP module provides vital diagnostic feedback. Network administrators can easily track operational parameters like optical power, voltage, and commercial temperature, ensuring proactive maintenance and uninterrupted fiber optic connectivity.
Compliance is paramount for this commercial-grade SFP. Every optical transceiver undergoes strict evaluations to meet international safety and environmental regulations, ensuring dependable telecommunications network integration.
Before leaving our facility, each Gigabit Ethernet module undergoes a comprehensive optical testing program. This strict quality control protocol eliminates defects and guarantees superior single-mode fiber performance.
This bidirectional transceiver is fully compliant with CE, FCC, UKCA, UL, and REACH standards. These prestigious industry certifications confirm the absolute safety and ecological sustainability of the optical product.
Designed in accordance with Multi-Source Agreement standards, this compatible SFP module connects flawlessly with major switch brands. It ensures plug-and-play interoperability without triggering networking equipment errors.
We implement strict hardware verification procedures on every single-fiber SFP. These laboratory assessments guarantee exceptional optical stability across demanding network infrastructure environments.
Evaluates laser center wavelength precision to maintain optimal WDM network transmission accuracy.
Analyzes gigabit signal integrity to ensure clear data modulation compliant with IEEE standards.
Measures data stream reliability during extended long-haul SFP operation to prevent packet loss.
Confirms continuous module durability within standard zero to seventy degrees commercial temperature environments.
We guarantee secure supply chain delivery for your fiber optic transceiver orders. Each package utilizes professional materials to maintain pristine factory condition upon arrival.
Premium ESD-safe shielding prevents static damage to internal electrical SFP components.
Durable outer cartons absorb mechanical vibrations during transit for optical modules.
Efficient warehouse operations ensure rapid shipment preparation for your networking supplies.
Trusted worldwide courier partnerships provide fast delivery for enterprise telecommunications projects.
Installing this hot-pluggable transceiver is incredibly straightforward. Simply insert the compatible SFP into your networking switch port and connect the simplex SC fiber patch cable. The plug-and-play architecture immediately initiates high-speed bidirectional data transmission without complex software configuration.
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-SC31551G-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) | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps |
Wavelength | 1310nm-TX/1550nm-RX | 1310nm-TX/1550nm-RX | 1550nm-TX/1310nm-RX | 1310nm-TX/1550nm-RX | 1550nm-TX/1310nm-RX | 1310nm-TX/1550nm-RX |
Connector | Simplex SC | Simplex SC | Simplex SC | Simplex SC | Simplex SC | Simplex SC |
Cable Distance (Max) | 20km | 10km | 3km | 40km | 20km | 20km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -9 to 0dBm | -9 to 0dBm | -9 to 0dBm | -9 to 0dBm | -9 to 0dBm | -9 to 0dBm |
Receiver Sensitivity | -23dBm | -23dBm | -23dBm | -24dBm | -23dBm | -23dBm |
Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | -40 to 85°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | FP | FP | FP | DFB | DFB | FP |
Receiver Type | PIN | PIN | PIN | PIN | PIN | PIN |
Receiver Overload | -3dBm | -3dBm | -3dBm | -3dBm | -3dBm | -3dBm |
DOM Support | Yes | Yes | Yes | Yes | Yes | Yes |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Planning a massive campus fiber network upgrade. Do you guys offer volume discounts for bulk purchasing these 1.25Gbps modules? By S***e on 2026-07-21
A: Yes, we provide competitive tiered pricing for batch deployments. For enterprise procurement of the 1G SFP BiDi transceivers over 100 units, you can expect significant discounts. Please contact our sales team directly for a custom B2B quote. By admin on 2026-07-21
Q: Does this 1000BASE-BX SFP meet international telecom standards and safety compliance for enterprise networking? By J***l on 2026-06-23
A: Yes, the LS-SC31551G-20C strictly complies with IEEE 802.3z gigabit ethernet standards, alongside RoHS, CE, and FCC certifications. You can confidently deploy them knowing they meet global safety and reliability benchmarks. By admin on 2026-06-23
Q: We need to deploy these in outdoor telecom cabinets. The 0-70°C rating is fine for indoors, but do you have an industrial wide-temperature version? By N***s on 2026-03-03
A: For outdoor deployments with extreme temperatures, we highly recommend our industrial variant, the LS-SC31551G-20I. It operates flawlessly from -40°C to 85°C while maintaining the exact same 20km transmission distance and DOM diagnostic capabilities. By admin on 2026-03-03
Q: Will this Simplex SC DOM SMF transceiver play nice with our mixed HP and Netgear switch environment? We need seamless interoperability. By L***s on 2026-01-17
A: Absolutely! The LS-SC31551G-20C 1G SFP is fully MSA compliant and extensively tested for OEM compatibility across major brands, ensuring plug-and-play operation with HP, Netgear, Cisco, and other mainstream networking equipment. By admin on 2026-01-17
{{reply_items.topic || reply_items.text}}By {{reply_items.author}}
{{ lpMoneyText(detail_data.displayed_price.unit_prefix, item.displayed_price.value || item.displayed_price.min, detail_data.displayed_price.unit_suffix) }}
United States
Carrier
CostDelivery TimeTracking
Company
CostTime
{{ shipitem.name }}
{{ isFreeShipping(shipitem)? 'Free Shipping' : lpMoneyText(detail_data.displayed_price.unit_prefix, shipitem.price, detail_data.displayed_price.unit_suffix) }} To Be Negotiated {{shipitem.datemin}}-{{shipitem.datemax}} days Available
{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}}