LevelOne 1,25 Gbit/s singlemode BIDI SFP-transceiver, 20 km, TX 1550 nm / RX 1310 nm

The LevelOne SFP-9331 is a single‑mode BiDi SFP transceiver that supports up to 1.25 Gbps bi‑directional data transfer on a single fiber core over distances up to 20 km. It transmits at 1550 nm and receives at 1310 nm, enabling bidirectional communication when paired with a complementary transceiver. The module is compact, operates from a single +3.3 V supply, and meets applicable safety and interface standards such as EN 60825-1, IEEE 802.3z and relevant Fiber Channel specifications.

Advantages

The SFP-9331 provides cost‑effective fiber connectivity with multi‑rate support (125 Mb to 1.25 Gb), a simplex LC connector for single‑fiber links, and compliance with MSA for hot‑swappable SFP interfaces. It is RoHS compliant and designed for Class 1 laser safety, requiring no additional configuration or installation software.

Suitable for

• Point‑to‑point single‑mode fiber links up to 20 km
• Network equipment requiring SFP hot‑pluggable transceivers
• Gigabit Ethernet and Fibre Channel uplinks and connections

Key specifications

• Interface type: SFP (simplex LC)
• Maximum data transfer rate: 1250 Mbit/s (1.25 Gbps), multi‑rate 125 Mb to 1.25 Gb
• Transmit wavelength (TX): 1550 nm
• Receive wavelength (RX): 1310 nm
• Range: up to 20 km on single‑mode fiber
• Power supply: single +3.3 V
• Dimensions: 57 mm × 12 mm × 13.7 mm
• Weight: 0.022 kg
• Standards: IEEE 802.3z, Fiber Channel, MSA, EN 60825-1

How to use

Install the SFP‑9331 into a compatible SFP port on switches, routers or media converters while the host device is powered down or hot‑swap capable. For bi‑directional single‑fiber operation, pair this transceiver with the complementary module (e.g., SFP‑9321) that uses the opposite TX/RX wavelengths. Connect the simplex LC fiber patch cable, verify link status on the host device, and ensure the host provides a +3.3 V supply to the SFP slot.

Recommendations

Use certified single‑mode fiber and LC simplex patch cords, confirm compatibility with the host device vendor’s SFP support list, and avoid bending the fiber beyond recommended radii. For long‑term reliability, operate within the specified temperature and power limits and follow ESD handling procedures when inserting or removing the module.