25G SFP28 BIDI 40km 802.3cp compliant Transceiver

Part # : WST-S28-BX4E-Ux

Category : ,



  • 1-Fiber Bi-Directional SFP Optical Transceiver
  • Up to 10 Gbps / 25.78 Gbps Bi-directional Data Links
  • IEEE 802.3cp 25GBASE-BR40 compliant
  • Support CPRI Option 8/10 @ 10.13/ 24.33Gbps
  • Built-in dual CDR
  • Distance up to 40 km with power budget 20.7dB
  • Simplex LC Connector
  • 1295nm/1309nm EML Transmitter and APD Receiver
  • Single +3.3 V Power Supply
  • Low power consumption
    • Max. 1.6W for WST-S28-BX4E-xC
    • Max. 1.8W for WST-S28-BX4E-xI
  • Operating temperature range:
    • 0 to 70 oC Operation: WST-S28-BX4E-xC
    • -40 to 85 oC Operation: WST-S28-BX4E-xI


WST-S28-BX4E-xx series single mode transceiver is a small form factor pluggable module for bi-directional serial optical data communications such as 25GBASE-BR40 Ethernet and CPRI Option 8/10. It is with the SFP28 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. The transmitter section uses a 1295 / 1309 nm EML laser with TEC and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an APD-TIA. The Tx and Rx are with an embedded rate selection clock data recovery (CDR) IC for 25G/10G operation.


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