10/100BASE-T SFPFortinet FN-TRAN-SFP56-SR Compatible 50G SFP56 SR Transceiver Module
This Fortinet FN-TRAN-SFP56-SR compatible transceiver provides 50G connectivity in a hot-swappable SFP56 package. Its optical design operates at 850nm for up to 100m on OM4, using Duplex LC. Complete parameters and related OEM references help structured fiber installations preserve a documented and serviceable optical channel.
OEM Part Number: FN-TRAN-SFP56-SRHT Part Number: SFP-50GSR-85
Product Highlights
- Compatible alternative to Fortinet FN-TRAN-SFP56-SR
- 50G connectivity at 53.125Gbps
- Optical wavelength: 850nm
- Specified reach: 100m on OM4
- Duplex LC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | SFP-50GSR-85 |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP56 |
| Max Data Rate | 53.125Gbps |
| Wavelength | 850nm |
| Max Cable Distance | 100m@OM4 |
| Connector | Duplex LC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -6.5~4dBm |
| Receiver Sensitivity | <-8.4dBm |
| Power Budget | 1.9dB |
| Receiver Overload | 4dBm |
| Power Consumption | ≤1.5W |
| Extinction Ratio | ＞3dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Modulation Format | PAM4 |
| Protocols | IEEE802.3cd, SFF-8472, SFF-8402, SFF-8419, OIF-CEI-04.0 |
Applications and Optical Link Design
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.
Before deployment, check the host port type, supported data rate and firmware requirements. The 50G interface configuration must match the remote equipment; sharing a SFP56 housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 100m on OM4 reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Fortinet Compatibility and Factory Testing
Factory verification starts with the expected FN-TRAN-SFP56-SR identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -6.5~4dBm; receiver sensitivity is <-8.4dBm; the stated optical power budget is 1.9dB. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Structured Fiber Pathways and Serviceability
Treat the transceiver as part of the complete channel. Follow the intended patch-panel route, maintain bend control and leave service access around the port. Confirm connector polish and fiber type at every mated pair; a documented service allowance is preferable to excess slack concealed inside a rack. For this model, the principal parameters are data rate 53.125Gbps, wavelength 850nm, rated reach 100m on OM4.
Ordering Information
When ordering, specify FN-TRAN-SFP56-SR, SFP-50GSR-85, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
Quality Assurance and Packaging
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. Customer references, rack groups and project packing lists can be added for volume orders.
Frequently Asked Questions
Is this an original Fortinet transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies FN-TRAN-SFP56-SR, not an original Fortinet-branded module.
Which fiber and connector are required?
Use Duplex LC with MMF. The specified maximum reach is 100m on OM4, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
