25GBASE-BX BiDi SFP28 10km Optical Transceiver Module

Basic Information
Place of Origin: Shenzhen China
Brand Name: OLKOPTO
Certification: RoHS FCC CE GS UL FDA etc
Model Number: OLSB232XL-CD10
Minimum Order Quantity: 1pc
Packaging Details: Individual package Or 10pcs/pallet Or 20pcs/pallet
Delivery Time: 3-5 working days
Payment Terms: T/T or Net 30 days
Supply Ability: 80-120k per month
Data Rate: 25.78Gb/s Form Factor: SFP28
Wavelength: 1270/1330nm&1330/1270nm Distance: 10km
Part Number: OLSB232XL-CD10 Compatiblity: Custom
DDM/DOM: Supported Temperature: 0~70 °C
High Light:

10km Optical Transceiver Module


25GBASE-BX Optical Transceiver Module


BiDi SFP28 Transceiver Module

25GBASE-BX BiDi SFP28 1270nm/1330nm & 1330nm/1270nm 10km Optical Transceiver Module


Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Note
Supply Voltage Vcc -0.5 4.0 V  
Storage Temperature Ts -40 85 °C  
Relative Humidity RH 0 85 %  


Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the module


Gereral Operating Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Data Rate     25.78   Gb/s  
Supply Voltage Vcc 3.13 3.3 3.47 V  
Supply Current Icc     450 mA  
Operating Case Temp. Tc 0   70 °C  



Electrical Input/Output Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Diff. input voltage swing   120   820 mVpp 1
Tx Disable input H VIH 2.0   Vcc+0.3 V  
L VIL 0   0.8
Tx Fault output H VOH 2.0   Vcc+0.3 V 2
L VOL 0   0.8
Input Diff. Impedance Zin   100   Ω  



Parameter Symbol Min. Typ Max. Unit Note
Diff. output voltage swing   340 650 800 mVpp 3
Rx LOS Output H VOH 2.0   Vcc+0.3 V 2
L VOL 0   0.8  


Note 1) TD+/- are internally AC coupled with 100Ω differential termination inside the module.

Note 2) Tx Fault and Rx LOS are open collector outputs, which should be pulled up with 4.7k to 10kΩ resistors on the host board. Pull up voltage between 2.0V and Vcc+0.3V.

Note 3) RD+/- outputs are internally AC coupled, and should be terminated with 100Ω (differential) at the user SERDES.


Optical Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Operating Wavelength   1250 1270 1290 nm  
1310 1330 1350  
Ave. output power (Enabled) Po -3   5 dBm  
Extinction Ratio ER 3.5     dB  
spectral width(-20dB) Δλ     1 nm  
Relative Intensity Noise RIN     -130 dB/Hz  
Dispersion penalty       3 dB  



Parameter Symbol Min. Typ Max. Unit Note
Operating Wavelength     1330   nm  
Stressed Receiver OMA Sensitivity Psen     -13 dBm  
Average Receiver Power Pimax -13.3   2 dBm  
LOS Assert Pa -30     dBm  
LOS De-assert Pd     -12 dBm  
LOS Hysteresis Pd-Pa 0.5   5 dB  


Product Features

● compliant to SFF-8402 for SFP28 solution

● Digital Diagnostic Monitor Interface with SFF-8472

● Hot pluggable SFP+ footprint

● 1270nm/1330nm DFB transmitter

● Up to 25.78Gb/s data links

● Applicable for 10Km SMF connection

● High transmission margin

● Low power consumption<1.5W

● Single 3.3V power supply

● Operating case temperature: Commercial: 0 ~ +70℃



● 25.78 Gb/s single lane

● Other optical links


Ordering Information

Part Number Description
OLSB232XL-CD10 SFP28 LR 25.78G,0~70, 1270/1330nm, BIDI 10Km
OLSB322XL-CD10 SFP28 LR 25.78G,0~70, 1330/1270nm, BIDI 10Km

Contact Details

WhatsApp : +8618695187695