NOKIA 3FE55743AA Compatible 10G SFP+ BX40-U Transceiver Module
Built for hosts recognizing 3FE55743AA, this HT-manufactured SFP+ module delivers 10G transmission at 1270nm-TX/1330nm-RX. Its rated reach is 40km, with Simplex LC as the physical interface. The specifications and engineering guidance below support project teams keep OEM references, delivery records and port schedules aligned, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: 3FE55743AAHT Part Number: SFP-10G23-BX40-I
Product Highlights
- Compatible alternative to NOKIA 3FE55743AA
- 10G connectivity at 10.3Gbps
- Optical wavelength: 1270nm-TX/1330nm-RX
- Specified reach: 40km
- Simplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| NOKIA Compatible | 3FE55743AA |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP-10G23-BX40-I |
| Form Factor | SFP+ |
| Max Data Rate | 10.3Gbps |
| Wavelength | 1270nm-TX/1330nm-RX |
| Max Cable Distance | 40km |
| Connector | Simplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | 1~5dBm |
| Receiver Sensitivity | <-15dBm |
| Power Budget | 16dB |
| Receiver Overload | 0.5dBm |
| Power Consumption | ≤1W |
| Extinction Ratio | >3.5dB |
| DDM/DOM | Supported |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | IEEE 802.3ae, SFP+ MSA, SFF-8472, SFF-8431, SFF-8432, CPRI, OBSAI |
Project Documentation and Traceability
Large deployments are easier to audit when the order code, optical standard and endpoint record agree. Keep the OEM reference in the compatibility document and the HT part number on the packing list. Labels and carton groups can be arranged by rack or port plan so installers need not identify modules by appearance. For this model, the principal parameters are data rate 10.3Gbps, wavelength 1270nm-TX/1330nm-RX, rated reach 40km.
NOKIA Compatibility and Factory Testing
Compatibility testing for 3FE55743AA combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Applications and Optical Link Design
This BiDi interface is useful where only one fiber strand is available between two sites or racks. It must be paired with the complementary wavelength direction: one end transmits on the wavelength that the other end receives. Verify the paired part number, connector polish and fiber plant before installation, and measure link loss against the specified optical budget.
The industrial temperature rating makes this version appropriate for controlled outdoor cabinets, transport nodes and other installations exposed to wider ambient temperature variation. Adequate airflow, protected cable routing and host-platform temperature limits still apply.
This single-fiber interface must be paired with the complementary wavelength direction. One end transmits on the wavelength the other receives. Verify connector polish and measure loss over the 40km design range before service.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 1~5dBm; receiver sensitivity is <-15dBm; the stated optical power budget is 16dB. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. 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.
Frequently Asked Questions
Is this an original NOKIA transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 3FE55743AA, not an original NOKIA-branded module.
Which fiber and connector are required?
Use Simplex LC with SMF. The specified maximum reach is 40km, 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.
Ordering Information
Use 3FE55743AA as the compatibility cross-reference and SFP-10G23-BX40-I as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. 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
Each 3FE55743AA compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
