1.25G SFP 1550nm 80km Transceiver

1000BASE-ZX SFP 1550nm 80km Transceiver

IP-QELK80B55CSmall Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). Includes 5 sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the 1550nm DFB laser and the PIN/TIA. The module data link up to 80km in 9/125um Single-mode fiber.

This transceiver meets the Small Form Pluggable (SFP) industry standard package utilizing an integral LC-Duplex optical interface connector. An enhanced Digital Diagnostic Monitoring Interface compliant with SFF-8472 has been incorporated into the transceiver. It allows real time access to the transceiver operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage by reading a built-in memory with I²C interface.

The optical output can be disabled by a LVTTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. The system can also get the LOS (or Link)/Disable/Fault information via I²C register access.


  • Up to 1.25Gb/s data links
  • 1550nm DFB laser transmitter and PIN/TIA receiver
  • Up to 80km on 9/125µm SMF
  • Hot-pluggable SFP footprint
  • Duplex LC/UPC type pluggable optical interface
  • Low power dissipation
  • Metal enclosure, for lower EMI
  • RoHS compliant and lead-free
  • Support Digital Diagnostic Monitor interface
  • Single +3.3V power supply
  • Compliant with SFF-8472
  • Case operating temperature
  • Commercial: 0°C to +70°C


Model name 1000BASE-ZX SFP 1550nm 80km Module Brand Inphilight
Package type SFP Transmission rate 1000Mbps
wavelength 1550nm The longest transmission distance 80km
interface LC duplex Laser type DFB 1550nm
Fiber type Single mode SMF Digital diagnosis (DDM/DOM) Yes
Emitted light power 0~5dBm Receiving sensitivity <-24dBm
Industrial temperature 0-70°C ( 32-158°F) Protocol SFF-8472 MSA, IEEE 802.3ah-2004


  • Switch to Switch Interface
  • Fast Ethernet
  • Switched Backplane Applications
  • Router/Server Interface
  • Other Optical Links

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