Shenzhen Sopto Technology Co., Ltd

Rohs 1310nm 10km Sfp28 Lr 25g Bidi Optical Transceiver

Product Details:
Place of Origin: Shenzhen China
Brand Name: Sopto
Certification: CE RoHS FCC
Model Number: SPT-SFP28-LR
Payment & Shipping Terms:
Minimum Order Quantity: 1pcs
Price: 78.18USD
Packaging Details: 10pcs standard boxes, mass order with carton box package can do OEM according to customer's request.
Delivery Time: 5-8 days
Payment Terms: L/C, T/T,Paypal, D/P
Supply Ability: 10000 pcs per month
  • Detail Information
  • Product Description

Detail Information

Product NO.: SPT-SFP28-LR Wavelength: 1310nm
Product Name: 25g SFP28 Module Transmission Distance: 10km
Date Rate: 25Gbps Aplications: 25GBASE-LR Ethernet
High Light:

Bidi Optical Transceiver


25g Bidi


Sfp28 Optical Transceiver

Product Description

Rohs 1310nm 10km Sfp28 Lr 25g Bidi Optical Transceiver


Description of 25g SFP28 Module


Sopto 1310 nm DFB 25 Gigabit SFP28 transceiver is designed to transmit and receive optical data over single mode optical fiber for link length 10km.

The SFP28 LR module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mmof standard FR4 with one connector.

The transmitter converts 25Gbit/s serial PECL or CML electrical data into serial optical data compliant with the 25GBASE-LR standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. Logic “1” or no connection on this pin will disable the laser from transmitting. Logic “0” on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (Tx_Fault) is provided. TX_Fault is module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP28 module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor

The receiver converts 25Gbit/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP28 is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable.


Features of 25g SFP28 Module


● Up to 25.78Gb/s bi-directional data links

● 1310nm DFB transmitter, PIN photo-detector

● 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface for optical transceivers

● Operating case temperature:

● 0 °C to 70°C

● Advanced firmware allow customer system encryption information to be stored in transceiver

● Cost effective SFP28 solution, enables higher port densities and greater bandwidth

● RoHS compliant




● 25GBASE-LR Ethernet

● High-speed storage area networks

● Computer cluster cross-connect

● Custom high-speed data pipes

● Inter Rack Connection




 Product NO.  SPT-SFP28-LR
 Wavelength  1310nm
 Product name  25g SFP28 module
 Transmission Distance  10km
 Operating temperature  Standard: 0 to +70°C
 Date rate  25Gbps
 Aplications  25GBASE-LR Ethernet
 Package Type  SFP28


Optical Characteristics


The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.


 Parameter  Symbol  Min.  Typical  Max  Unit  Notes
 Center Wavelength λt 1295   1325 nm  
 Side Mode Suppression Ratio SMSR 30     dB  
 Average Optical Power Pavg -1.5   2 dBm Note1
 Laser Off Power Poff     -30 dBm  
 Extinction Ratio ER 3.5     dB  
 Transmitter Dispersion Penalty TDP     2.7 dB  
 Relative Intensity Noise RIN20OMA     -130 dB/Hz  
 Optical Modulation Amplitude OMA -2     dBm  
 Center Wavelength λr 1260   1350 nm  
 Sensitivity (Average power) Psens -13.3   2 dBm


BER = 1x10-12


 Unstressed receiver sensitivity(OMA) Psens     -13 dBm BER = 1x10-6
 LOS Assert LOSA     -13 dBm  
 LOS De-assert LOSD     -12 dBm  
 LOS Hysteresis LOSH 0.5     dB  
 Return loss of receiver   26     dB  
 Average received power (overload)       2 dBm Note2


[1]. Average optical power shall be measured using the methods specified in TIA/EIA-455-95.

[2]. Maximum average received power is compatible with FC-PI-6-32G while typical BER is less than 1x 10-12 .


Rohs 1310nm 10km Sfp28 Lr 25g Bidi Optical Transceiver 0
Rohs 1310nm 10km Sfp28 Lr 25g Bidi Optical Transceiver 1Rohs 1310nm 10km Sfp28 Lr 25g Bidi Optical Transceiver 2
Ordering information
 Part Number  Product Description
 SPT-SFP28-LR  25.78Gbps, 1310nm SFP28 LR 10km, 0ºC ~ +70ºC

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