Sate Optics provides 1.25G SFP Transceivers designed for Gigabit Ethernet networks, enterprise infrastructure and fiber optic communication applications.
1.25G SFP optical modules are widely used for 1000BASE Ethernet applications, providing reliable optical connectivity for switches, routers, servers and network equipment requiring Gigabit data transmission.
Our 1.25G SFP transceiver portfolio includes multimode and single-mode optical solutions such as 1000BASE-SX, 1000BASE-LX and 1000BASE-ZX, supporting transmission distances from short-range data center links to long-distance fiber networks.
Sate Optics offers OEM-compatible 1.25G SFP optical modules with different wavelengths, transmission distances and fiber interfaces to meet diverse enterprise, telecom and networking requirements.
1.25G SFP Optical Transceivers
| Part Number | Model No. | Picture | Data Rate(Mbps) | Wavelength | Media Type | Reach | TX Power(dBm) | RX Sens.(dBm) | Temp.(℃) | Note | Datasheet |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST-1G-SFP-SX | 1.25G SFP SX 550m Compatible | ![]() |
1.25Gbps | 850nm | Multi-mode Fiber (MMF) | 550nm | -9 ~ -3 dBm | -18 dBm | 0~70℃ | Compatible 1.25G SFP SX Optical Transceiver | |
| ST-1G-SFP-LX | 1.25G SFP LX 10km Compatible | ![]() |
1.25Gbps | 1310nm | Single-mode Fiber (SMF) | 10km | -9 ~ -3 dBm | -20 dBm | 0~70℃ | Compatible 1.25G SFP LX Optical Transceiver | |
| ST-1G-SFP-LX20 | ST-1G-SFP-LX20 | ![]() |
1.25Gbps | 1310nm | Single-mode Fiber (SMF) | 20km | -9~-3dBm | -20dBm | 0~70℃ | Compatible 1.25G SFP LX20 Optical Transceiver | |
| ST-1G-SFP-EX | 1.25G SFP EX 40km Compatible | ![]() |
1.25Gbps | 1310nm | Single-mode Fiber (SMF) | 40km | -5 ~ 0 dBm | -24 dBm | 0~70℃ | Compatible 1.25G SFP EX Optical Transceiver | |
| ST-1G-SFP-EX40 | 1.25G SFP EX40 40km Compatible | ![]() |
1.25Gbps | 1550nm | Single-mode Fiber (SMF) | 40km | -5 ~ 0 dBm | -24 dBm | 0~70℃ | Compatible 1.25G SFP EX40 Optical Transceiver | |
| ST-1G-SFP-ZX | 1.25G SFP ZX 80km Compatible | ![]() |
1.25Gbps | 1550nm | Single-mode Fiber (SMF) | 80km | 0 ~ +5 dBm | -26 dBm | 0~70℃ | Compatible 1.25G SFP ZX Optical Transceiver | |
| ST-1G-SFP-ZX120 | 1.25G SFP ZX120 120km Compatible | ![]() |
1.25Gbps | 1550nm | Single-mode Fiber (SMF) | 120km | 0 ~ +5 dBm | -32 dBm | 0~70℃ | Compatible 1.25G SFP ZX120 Optical Transceiver | |
| ST-1G-SFP-ZX160 | 1.25G SFP ZX160 160km Compatible | ![]() |
1.25Gbps | 1550nm | e Single-mode Fiber (SMF) | 160km | +2 ~ +6 dBm | -34 dBm | 0~70℃ | Compatible 1.25G SFP ZX160 Optical Transceiver |









