Fortinet FN-TRAN-SFP+ER Compatible 10GBASE-ER SFP+ 1550nm 40km Transceiver

EdgeOptic's FN-TRAN-SFP+ER compatible is a Fortinet-coded version of the EdgeOptic 10G-SFP-40 multi-vendor 10GBASE-ER SFP+ transceiver, built for Fortinet FortiGate firewalls and FortiSwitch switches with SFP+ slots. FN-TRAN-SFP+ER is Fortinet's current ordering code for the 1550nm 40km 10GBASE-ER class, used in FortiGate mid-range and high-end models with 10G SFP+ uplinks. The module carries Fortinet-recognized EEPROM and supports SFF-8472 DDM/DOM diagnostics, so FortiOS registers it as a Fortinet-coded ER optic without manual override.

The optical layer uses a DFB laser at 1550nm and a PIN photodiode receiver. Transmit power is −1 to +4 dBm with receiver sensitivity of −16 dBm and an overload of 0 dBm, providing a 15 dB link budget over single-mode fiber across a typical 40 km reach. The transceiver supports 1.25 to 11.32 Gbps line rates covering 1GE and 10GE Ethernet, the protocol scope expected by FortiGate and FortiSwitch SFP+ ports. Dispersion tolerance is 800 to 1000 ps/nm; operating temperature is 0 to 70°C at +3.3 V single supply.

Form factor is hot-pluggable SFP+ with LC duplex connector per the SFP+ Multi-Source Agreement (SFF-8431 electrical interface) and SFF-8472 two-wire digital diagnostics. Compliance covers CE, Class 1 FDA laser safety, IEC 60825-1, and RoHS. DOM telemetry exposes transmit power, receive power, laser bias current, supply voltage, and transceiver temperature in real time, which FortiOS surfaces through the FortiGate management interface for link-health monitoring on long-haul ER spans typical of WAN aggregation and data-center interconnect deployments.

Typical deployment scenarios for the FN-TRAN-SFP+ER include FortiGate-to-FortiGate WAN aggregation across remote sites, perimeter firewall uplinks into ISP carrier-Ethernet handoffs, and data-center interconnect between FortiGate cluster pairs over single-mode fiber plants extending up to 40 km. The 1550nm wavelength matches the lowest-attenuation window in single-mode fiber, giving the 15 dB link budget enough headroom for splice and connector loss on longer ER spans. FortiOS reads the SFF-8472 DOM telemetry from the optic and surfaces it through the FortiGate management interface, so operators can monitor transmit and receive power drift over time. The receiver overload point at 0 dBm should be respected on shorter spans; for installed runs well under the 40 km design point, in-line optical attenuation may be needed to keep receive power within the −16 to 0 dBm operating window.

Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For verification against your specific FortiGate or FortiSwitch model or guidance on FN- versus FS- ordering codes, contact our sales team.