1.25G Arista Compatible

Arista® SFP-1G-LX-20 Compatible 1000Base-LX/LH SFP Transceiver SMF 1310nm 20km LC DOM
Arista® SFP-1G-LX-20 Compatible 1000Base-LX/LH SFP Transceiver SMF 1310nm 20km LC DOM
Arista® SFP-1G-LX-20 Compatible 1000Base-LX/LH SFP Transceiver SMF 1310nm 20km LC DOM

Arista® SFP-1G-LX-20 Compatible 1000Base-LX/LH SFP Transceiver SMF 1310nm 20km LC DOM




Product Highlights


Supports up to 1.25Gbps bit rates


Hot-pluggable SFP footprint


1310nm FP laser and PIN photo detector, Up to 20km for SMF transmission


Compliant with SFP MSA and SFF-8472 with duplex LC receptacle


Compatible with RoHS


Single +3.3V power supply


Real Time Digital Diagnostic Monitoring

New Products

Arista Networks SFP-1G-LX-20 compatible SFP transceiver supports up to 20km link lengths over LC duplex SMF fiber. Each SFP transceiver module is individually tested to be used on a series of Arista switches, routers, servers, network interface card (NICs) etc.



Technical Specification

Compatible OEM Arista® Compatible With OEM Part Number(s) SFP-1G-LX-20
Transceiver Type LX/LH Reach 20km
Wavelength 1310nm Form Type SFP
Speed Description 1.25-Gigabit Media SMF
Connector LC  Extinction Ratio >9.0dB
TX Power -9~0dBm Receiver Sensitivity <-23dBm

1.25Gbps Optical systems

Gigabit Ethernet

1.063Gbps Fiber Channel


Operating: 0 to70°C

Storage: -40°C to 85°C




Arista network switches • Arista network routers
• Arista firewalls • Arista security gateway
• Arista fiber media converter • Arista network adapters
• Arista network interface card (NICs) • Arista NAS

Quality Assurance



Quality Certification

FIBERTOP has strict control over all products' quality, including our strict qualification audit for material suppliers, comprehensive quality management system and production process control which comply with the certifications and safety standard. Our products accord with industry standard and mainstream quality certification, such as  ISO 9001, CE, RoHS, CE, REACH, FCC, FDA, CB, UL etc.


  • Excellent quality is the foundation of FIBERTOP' s survival and development.
  • Our R&D team are experts with many years' experience in telecom industry.
  • Our manufacturers are first-class manufacturers in the industry.
  • Many of them have the qualification of OEM for first-class system equipment manufacturers.







FIBERTOP provide after-sales service in strict accordance with Chinese Consumer Protection Law & Product Quality Law of the People's Republic of China. The defects liability period is provided for each product based on the materials, workmanship, frequency of use and service life. The return, replacement and repair services are as follows:




Return within 30 days


Replacement up to 1 year


Up to 5 years warranty

  • Warranty process

Provide relevant information (such as order number, product model, product serial number, product label, etc.)→Describe the problems you meet with →FIBERTOP confirms that the product is complete and still in the warranty period→Send the product back to FIBERTOP repair centre.

Note:The warranty period of the repair or replacement product is based on the longer time,either the remaining warranty period of the original product or ninety days after repair.

  • Request a repair 

When your FIBERTOP products need repairing(RMA-Return Material Authorization ) , please contact your sales consultant to provide timely service to you.


  • Free maintenance items

Guarantee repairing in two years : 1.Not man made damage; 2. Product quality issues caused by design defects or material problems.


  • The following conditions will not be repaired

• Maintenance center judge as a non FIBERTOP products;

The appearance of man-made damage;

End face damage caused by use;

Inapplicable items listed in the warranty statement.


  • Warranty description

FIBERTOP guarantees that all the products are subject to strict quality control from raw materials procurement to production process. According to the problems raised by customers. if it is confirmed that the defective product are caused by raw materials or production process, FIBERTOP will provide repair or replacement services for free ;

The warranty terms do not cover any damage to the product caused by improper installation, accidental disasters, natural disasters, abuse, misuse, inadequate or excessive power supply, incorrect operation, poor environmental conditions, and any unauthorized disassembly, repair or modification ;

The warranty also does not apply to second-hand or unauthorized resale of products;

The FIBERTOP warranty only guarantees that customers can enjoy repair and replacement services when they purchase defective or damaged products ; FIBERTOP is not obliged to compensate or assume responsibility for module damage and repair needs caused by other equipment in use.

The warranty does not cover problems caused by third-party software or connected related equipment,etc.


FIBERTOP always adheres to the concept of "focus, innovation and progress", and is committed to providing every user with reliable products and enthusiastic services.
    Net weight
0.017kg Gross Weight(with package) 0.32kg


Package of 1~50 pieces
  Step 1 Step 2  
  Step 3 Step 4  
Package of 51~200 pieces
  Step 1 Step 2  
  Step 3 Step 4  
Package of 201~400 pieces or more
  Step 1 Step 2  
  Step 3 Step 4  





FIBERTOP has established long-term cooperation with major global logistics companies to provide distribution services to more than 200 countries and regions.


Receiving Region Logistics Type Timeliness
Hong Kong, Macao and Taiwan SF 1~2 days
FedEx IP 1~3 days
FedEx IE 4~6 days
DHL 2~5 days
Overseas Regions UPS 1~3 days
FedEx 1~3 days
DHL 2~5 days



Note: 1. Timeliness is the estimated delivery time, some remote areas delivery may be delayed, the specific delivery time shall prevail .


  2. If you need to specify a logistics company, please contact customer service staff or your sales representative.






FIBERTOP has 10+ years of R&D technology experience and more than 100 successful cases. With rich experience and R&D strength, we have a complete set of services from the core system design to the  compatibility design of SFP transceivers and the completion of the final product. We can definitely satisfy our customers' needs through providing customized high-performance products and solutions at the first time.


Product customization



















Scheme Customization













FIBERTOP focuses on customer-oriented solutions and provides technical support.


We can optimize the design based on your original solutions, and also provide you with a complete network solution ,related products and technical support.  





Arista® Compatible 1.25G SFP 550m~160km Transceivers

SFP-1G-SX 1.25G SX SFP Transceiver MMF 850nm 550m LC DOM 0-70℃/-40-85℃
SFP-1G-SX-2 1.25G SFP Transceiver MMF 1310nm 2km LC DOM 0-70℃/-40-85℃
SFP-1G-LX-20 1.25G LX SFP Transceiver SMF 1310nm 20km LC DOM 0-70℃/-40-85℃
SFP-1G-EX-40 1.25G EX SFP Transceiver SMF 1310nm 40km LC DOM 0-70℃/-40-85℃
SFP-1G-EX1550-40 1.25G EX SFP Transceiver SMF 1550nm 40km LC DOM 0-70℃/-40-85℃
SFP-1G-EX-80 1.25G ZX SFP Transceiver SMF 1550nm 80km LC DOM 0-70℃/-40-85℃
SFP-1G-EZX-100 1.25G SFP Transceiver SMF 1550nm 100km~120km LC DOM 0-70℃
SFP-1G-EZX-160 1.25G SFP Transceiver SMF 1550nm 160km LC DOM 0-70℃





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