10/100BASE-T SFPNVIDIA/Mellanox OSFP-LR4-400G Compatible 400G OSFP (IHS/Finned Top) LR4 Transceiver Module
This NVIDIA/Mellanox OSFP-LR4-400G compatible transceiver provides 400G connectivity in a hot-swappable OSFP (IHS/Finned Top) package. Its optical design operates at 1271nm, 1291nm, 1311nm, and 1331nm for up to 10km, using Duplex LC/UPC. Complete parameters and related OEM references help high-density deployments balance optical performance, port access and thermal planning.
OEM Part Number: OSFP-LR4-400GHT Part Number: OSFP-LR4-400G
Product Highlights
- Compatible alternative to NVIDIA/Mellanox OSFP-LR4-400G
- 400G connectivity at 400Gbps
- Optical wavelength: 1271nm, 1291nm, 1311nm, and 1331nm
- Specified reach: 10km
- Duplex LC/UPC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | OSFP-LR4-400G |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) |
| Max. Data Rate | 400Gbps |
| Wavelength | 1271nm, 1291nm, 1311nm, and 1331nm |
| Max. Cable Distance | 10km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | CWDM EML |
| Receiver Type | PIN |
| TX Power | -1.9~4.8dBm |
| Minimum Receiver Power | -9.1dBm |
| Power Budget | 7.2dB |
| Receiver Overload | 5.6dBm |
| Max. Power Consumption | 10W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x50G-PAM4 |
| Modulation (Optical) | 4x100G-PAM4 |
| CDR (Clock and Data Recovery) | TX & RX Built-in DSP |
| Inbuilt FEC | No |
| Bit Error Ratio (BER) | ＜1E-12 |
| MTBF | 6955554.01 Hours |
| Packaging Technology | COB (Chip on Board) Packaging |
| Application | 400G Ethernet |
| Protocols | OSFP MSA, IEEE 802.3 bs-400GAUI-8, IEEE 802.3 cu, and CMIS4.0 |
Applications and Optical Link Design
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
Before deployment, check the host port type, supported data rate and firmware requirements. The 400G interface configuration must match the remote equipment; sharing a OSFP (IHS/Finned Top) housing alone does not make two transceiver types interoperable.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 10km route. Keep the Duplex LC/UPC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Quality Assurance and Packaging
Each OSFP-LR4-400G 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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -1.9~4.8dBm; the stated optical power budget is 7.2dB. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 400Gbps, wavelength 1271nm, 1291nm, 1311nm, and 1331nm, rated reach 10km.
Ordering Information
Use OSFP-LR4-400G as the compatibility cross-reference and OSFP-LR4-400G 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.
NVIDIA/Mellanox Compatibility and Factory Testing
Factory verification starts with the expected OSFP-LR4-400G 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.
Frequently Asked Questions
Is this an original NVIDIA/Mellanox transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies OSFP-LR4-400G, not an original NVIDIA/Mellanox-branded module.
Which fiber and connector are required?
Use Duplex LC/UPC with SMF. The specified maximum reach is 10km, 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.
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.
