25G ER SFP28 Optical Transceiver Module

SKU WST-S28-ER-x Category Tags , , ,



  • Up to 25.78 Gbps Bi-directional Data Links
  • Complaint with SFF-8402 SFP28 MSA
  • Support 25GBASE-ER
  • eCPRI Specification V2.0
  • Built-in dual CDR
  • Distance up to 40 km
  • 1310nm DFB Transmitter
  • SFF-8472 Digital Diagnostic Function
  • AC/AC Coupling according to MSA
  • Single +3.3 V Power Supply
  • RoHS 6/6 Compliant
  • 0 to 70°C Operation: WST-S28-ER-C
    • -10 to 85°C Operation: WST-S28-ER-E
    • -40 to 85°C Operation: WST-S28-ER-I
  • Class 1 Laser International Safety Standard IEC-60825 Compliant


  • 25G Ethernet
  • eCPRI Specification V2.0



WST-S28-ER-x series single mode transceiver is a small form factor pluggable module for bi-directional serial optical data communications such as 25G Ethernet and eCPRI Specification V2.0. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. This module is designed for single mode fiber and operates at a nominal wavelength of 1310 nm. The transmitter section uses a 1310 nm multiple quantum well DFB laser and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a rate selection clock data recovery (CDR) IC.

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