"Singlemode SFP Transceiver for 100FX Ethernet and SDH/SONET applicationsApplications 125 MBit/s/s 100Base-FX Ethernet / FDDI 200 MBit/s/s ESCON 155 MBit/s/s SDH STM-1 / SONET OC-3 SR-0 51 MBit/s/s OC-1 SR-0 Features Hot-pluggable SFP Integrated digital diagnostic 1310nm Fabry-Perot laser transmitter LC duplex mating face For 9/125µm singlemode fiber, up to 40km distance Extended temperature range -40 up to +85°C RoHS compliant"