Datasheet
Data Sheet
1
MFB-Series
1
100Base-FX SFP Transceiver
The MFB family consists of Small Form Factor Pluggable (SFP) transceiver modules 
that are specifically designed for high performance integrated duplex data link over 
single mode optical fiber. These transceiver modules are compliant with the SFP 
Multisource Agreement (MSA) and hot pluggable. These modules offer an easy way to 
be installed in SFP MSA compliant ports at any time without the interruption of the host 
equipment operation. 
The MFB SFP transceivers using a long wavelength (1310nm) FP LD enable data transmission up to 2km on a multimode optical ber and up to 60km on a 
single mode optical ber. 
To meet the increasing demand of Industrial Ethernet ber solution, Planet has released the MFB-T 100Base-FX transceiver series that can operate reliably 
in electrically harsh, climatically demanding, and wide temperature range (-40
℃
 to 75
℃
) environment. The MFB-T 100Base-FX transceiver series provides 
easy and fast 100Base-FX connection for Planet wide temperature industrial equipment.
•  SFP Multi-Source Agreement compliant
•  125Mbps IEEE 802.3u 100Base-FX compliant
•  Industry standard small form pluggable (SFP) package (for 
model MFB-TFX / MFB-TF20 ) 
•  125Mbps FDDI ISO / IEC 9314-1 compliant
•  Serial ID functionality support
•  AC-coupled differential inputs and outputs
•  Class 1 laser safety standard IEC 825 compliant
•  2km link on a multimode ber and 20km to 60km on a 
single mode ber
•  Low power dissipation
•  0 to 60 degrees C operating temperature for MFB-FX / 
MFB-F20 / MFB-F40 / MFB-F60 / MFB-FA20 / MFB-FB20 
•  -40 to 75 degrees C operating temperature for MFB-TFX / 
MFB-TF20
Applications
The MFB family  SFP Fast Ethernet transceivers  can be installed in PLANET Switch and Media Converter products with 100Base-FX SFP interface. The 
deployment distance can be extended from 2km (Multi-Mode, LC) up to 60 kilometers (Single-Mode, LC).
The MFB family SFP Fast Ethernet transceivers are hot-pluggable and hot-swappable. You can plug in and pull out the transceivers to / from any SFP port 
without having to power off the Switch / Media Converter.
MFB SFP Transceiver
2km~60km



