DWDM-SFP25G-10NVIDIA/Mellanox DWDM-SFP25G-10 Compatible 25G SFP28 Transceiver Module
Built for hosts recognizing DWDM-SFP25G-10, this HT-manufactured SFP28 module delivers 25G transmission at 1563.86nm. Its rated reach is 10km on OS2, with Duplex LC/UPC as the physical interface. The specifications and engineering guidance below support high-density deployments balance optical performance, port access and thermal planning, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: DWDM-SFP25G-10HT Part Number: DW-SFP25G10-17
Product Highlights
- Compatible alternative to NVIDIA/Mellanox DWDM-SFP25G-10
- 25G connectivity at 25.78Gbps
- Optical wavelength: 1563.86nm
- Specified reach: 10km on OS2
- Duplex LC/UPC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| NVIDIA/Mellanox Compatible | DWDM-SFP25G-10 |
|---|---|
| Manufacturer | HT |
| HT Part Number | DW-SFP25G10-17 |
| Form Factor | SFP28 |
| Max Data Rate | 25.78Gbps |
| Wavelength | 1563.86nm |
| Max. Cable Distance | 10km@OS2 |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | EML DWDM |
| Receiver Type | APD |
| TX Power | -0.5~4.5dBm |
| Minimum Receiver Power | <-19dBm |
| Power Budget | 18.5dB |
| Extinction Ratio | >4dB |
| Max. Power Consumption | 2W |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| DDM/DOM | Supported |
| Inbuilt FEC | No |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Protocols | MSA SFP28 Compliant, SFF-8472, CPRI, eCPRI |
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 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.
For this 1563.86nm interface, verify channel spacing and filter compatibility. Passive filters add loss even without active equipment, so assess 10km on OS2 using the complete channel rather than fiber distance alone.
Quality Assurance and Packaging
Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. 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 -0.5~4.5dBm; the stated optical power budget is 18.5dB. 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 25.78Gbps, wavelength 1563.86nm, rated reach 10km on OS2.
Ordering Information
Use DWDM-SFP25G-10 as the compatibility cross-reference and DW-SFP25G10-17 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
The module is checked for host recognition as DWDM-SFP25G-10, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. 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 DWDM-SFP25G-10, 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 on OS2, 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.
