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2.5G SFP 1310nm 20km Industrial Transceiver Cisco ONS-SI-2G-I1 Compatible

Basic Information
Place of Origin: China
Brand Name: OLKOPTO
Certification: CE, RoHS, FCC, FDA, UL, EMC, ISO9001
Model Number: OLSP3125L-CD20
Minimum Order Quantity: 1 pc
Packaging Details: 10pcs/ foil bag, individual package
Delivery Time: 3-6 working days
Payment Terms: T/T
Supply Ability: 80-120k per month
Product Name: 2.5G SFP 1310nm 20km Compatibility: Cisco
Form Type: SFP (Mini-GBIC) Data Rate: 2.5 Gb/s
Wavelength: 1310nm Reach: 20km
Transmission Media: SMF Cable Connector: LC
DOM: Yes Operating Temperature: 0-70°C, -40-85°C
High Light:

2.5G SFP Industrial Transceiver


ONS-SI-2G-I1 Industrial Transceiver


CE SFP Optical Transceivers

Cisco ONS-SI-2G-I1 Compatible 2.5G SFP 1310nm 20km Industrial Transceiver

2.5G SFP 1310nm 20km Industrial Transceiver

This Cisco ONS-SI-2G-I1 Compatible 2.5G SFP 1310nm 20km Industrial SFP transceiver provides 2500Base-LX throughput up to 20km over single-mode fiber (SMF) using a wavelength of 1310nm via an LC connector.


Product Features

• Functionally identical to Cisco ONS-SI-2G-I1
• 1310nm DFB laser transmitter and InGaAs PIN receiver
• Single 3.3V power supply
• Support Digital Diagnostic Monitoring Interface
• Low power dissipation
• Metal enclosure provides lower EMI
• ROHS compliant and Lead-Free


General Operating Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Data Rate DR   2.5   Gb/s  
Supply Voltage Vcc 3.13 3.3 3.47 V  
Supply Current Icc     300 mA  
  TI -40   85  





Optical Characteristics (TOP(C) = 0 to 70 , TOP(I) =-40 to 85 ,VCC = 3.13 to 3.47 V)


Parameter Symbol Min. Type Max. Unit Note
Operating Wavelength λ 1270 1310 1360 nm  
Ave. output power (Enabled) PAVE -5   0 dBm 1
Extinction Ratio ER 8.5     dB 1
Side mode Suppression Ratio SMSR 30   dB    
RMS spectral width Δλ     0.65 nm  
Rise/Fall time (20%~80%) Tr/Tf     0.26 ns 2
Dispersion penalty TDP     3.9 dB  
Output Optical Eye Compliant with IEEE802.3 z (class 1 aser safety)
Operating Wavelength λ 1270   1610 nm  
Receiver Sensitivity PSEN1     -19 dBm 3
Overload PAVE 0     dBm 3
LOS Assert Pa -35     dBm  
LOS De-assert Pd     -20 dBm  
LOS Hysteresis Pd-Pa 0.5     dB  



1.Measured at 2.5Gb/s with PRBS 2 223 – 1NRZ test pattern.

2.Unfiltered, measured with a PRBS223 – 1 test pattern @2.5Gbps

3.Measured at 2.5Gb/s with PRBS 223 – 1 NRZ test pattern for BER < 1x10-12


Product Descriptions


This Cisco ONS-SI-2G-I1 compatible SFP industrial module is suitable for 2.5Gb/s serial optical data communications intermediate-reach application, such as SDH STM-16 S-16.1/SONET OC-48 IR-1/2GFC. It provides a 20km transmission distance over single-mode fiber at a nominal wavelength of 1310nm. It has been programmed and tested to work with a wide range of Cisco industrial switches and routers. It performs identically to Cisco part number ONS-SI-2G-I1, allowing it to be an ideally equivalent to original transceivers.




● SDH STM-16 and SONET OC-48 system

2X Fiber Channel

Switch to Switch interface

Switched backplane applications

Router/Server interface

Other optical transmission systems

Contact Details

WhatsApp : +8618695187695