Products › Pluggable Transceiver Modules › 1.25G SFP

1.25G SFP Transceivers

Wide range of 1.25G SFP modules for Gigabit Ethernet, SONET/SDH, CPRI, and fiber channel applications. Available in dual‑fiber, single‑fiber BiDi, and CWDM/DWDM wavelength variants for maximum flexibility.

Key Features

  • ▹ 1.25Gbps / 1.0625Gbps data rates
  • ▹ SFP MSA compliant
  • ▹ Hot‑pluggable, LC duplex or Simplex (BiDi)
  • ▹ Digital diagnostic monitoring (DDM)
  • ▹ Operating case temp: 0~70°C (commercial) / -40~85°C (industrial)
  • ▹ RoHS compliant

Dual‑Fiber (Standard) Series

Part Number Rate Wavelength Reach Fiber Type Connector
GW3405D1.25G850nm550mMMFDuplex LC
GW3402D1.25G1310nm2kmMMFDuplex LC
GW3420D1.25G1310nm20kmSMFDuplex LC
GW3440D1.25G1310nm40kmSMFDuplex LC
GW3440D-151.25G1550nm20kmSMFDuplex LC
GW3480D1.25G1550nm80kmSMFDuplex LC
GW340CD1.25G1550nm120kmSMFDuplex LC

Single‑Fiber BiDi Series

Part NumberRateWavelength (Tx/Rx)ReachFiber TypeConnector
GW5405D-351.25G1310nm / 1550nm500mMMFSimplex LC
GW5405D-531.25G1550nm / 1310nm500mMMFSimplex LC
GW5403D-351.25G1310nm / 1550nm3kmSMFSimplex LC
GW5405D-531.25G1550nm / 1310nm3kmSMFSimplex LC
GW4403D-351.25G1310nm / 1550nm3kmSMFSimplex SC
GW4405D-531.25G1550nm / 1310nm3kmSMFSimplex SC
GW5420D-351.25G1310nm / 1550nm20kmSMFSimplex LC
GW5420D-531.25G1550nm / 1310nm20kmSMFSimplex LC
GW4420D-351.25G1310nm / 1550nm20kmSMFSimplex SC
GW4420D-531.25G1550nm / 1310nm20kmSMFSimplex SC
GW5420D-341.25G1310nm / 1490nm20kmSMFSimplex LC
GW5420D-431.25G1490nm / 1310nm20kmSMFSimplex LC
GW5440D-351.25G1310nm / 1550nm40kmSMFSimplex LC
GW5440D-531.25G1550nm / 1310nm40kmSMFSimplex LC
GW5480D-451.25G1490nm / 1550nm80kmSMFSimplex LC
GW5480D-541.25G1550nm / 1490nm80kmSMFSimplex LC
GW540CD-451.25G1490nm / 1550nm120kmSMFSimplex LC
GW540CD-541.25G1550nm / 1490nm120kmSMFSimplex LC

CWDM / DWDM Series

Part NumberTypeWavelengthRateReachFiber TypeConnector
GW3440D-xxCWDM1270nm ~ 1610nm1.25G40kmSMFDuplex LC
GW3480D-xxCWDM1270nm ~ 1610nm1.25G80kmSMFDuplex LC
GW340CD-xxCWDM1270nm ~ 1610nm1.25G120kmSMFDuplex LC
GW3440D-DxxDWDMC-band, 100GHz1.25G40kmSMFDuplex LC
GW3480D-DxxDWDMC-band, 100GHz1.25G80kmSMFDuplex LC
GW340CD-DxxDWDMC-band, 100GHz1.25G120kmSMFDuplex LC

Full DWDM C‑band (C21‑C60) available upon request. Contact sales for specific channel and reach options.

Compatibility & Compliance

  • ▹ SFP MSA SFF‑8472 / SFF‑8431 compliant
  • ▹ IEEE 802.3z (1000BASE‑SX/LX/ZX), ITU‑T G.957, G.691
  • ▹ Interoperable with Cisco, Huawei, Juniper, Arista, and major brands
  • ▹ Industrial temperature variants available for outdoor applications
  • ▹ RoHS, CE, FCC certified

Need a quote or samples?

Contact our engineering team for volume pricing, evaluation units, or technical support.

← Back to Pluggable Transceiver Modules