Brocade QSFP-LX4-100G Compatible 100G QSFP28 LX4 Transceiver Module
Built for hosts recognizing QSFP-LX4-100G, this HT-manufactured QSFP28 module delivers 100G transmission at 1271nm,1291nm,1311nm,1331nm. Its rated reach is 2km on SMF / 100m on OM3 MMF, with Duplex LC as the physical interface. The specifications and engineering guidance below support procurement teams match an equipment parts list to a clearly defined optical product, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: QSFP-LX4-100GHT Part Number: QSFP-LX4-100G
Product Highlights
- Compatible alternative to Brocade QSFP-LX4-100G
- 100G connectivity at 103.12Gbps (4x 25.78GGbps)
- Optical wavelength: 1271nm,1291nm,1311nm,1331nm
- Specified reach: 2km on SMF / 100m on OM3 MMF
- Duplex LC / SMF/MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | QSFP-LX4-100G |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 103.12Gbps (4x 25.78GGbps) |
| Wavelength | 1271nm,1291nm,1311nm,1331nm |
| Max. Cable Distance | 2km@SMF/100m@OM3 MMF |
| Connector | Duplex LC |
| Media | SMF/MMF |
| Transmitter Type | CWDM4 DFB |
| Receiver Type | PIN |
| TX Power | -3~4.5dBm |
| Minimum Receiver Power | -7.3dBm |
| Power Budget | 4.3dB |
| Receiver Overload | 4.5dBm |
| Power Consumption | ≤4.5W |
| Extinction Ratio | >3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Inbuilt FEC | Yes |
| Packaging Technology | COB (Chip on Board) Packaging |
| Protocols | IEEE Std 802.3bm-2015, SFF-8665 Rev 1.9, SFF-8636 Rev 2.10a, SFF-8679 Rev 1.8 |
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 100G interface configuration must match the remote equipment; sharing a QSFP28 housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 2km on SMF / 100m on OM3 MMF reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -3~4.5dBm; the stated optical power budget is 4.3dB. 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.
Procurement and Asset Identification
A useful purchase order identifies the host platform, expected OEM code and optical standard separately. This prevents a module with the same housing but another wavelength, reach or identification profile from being substituted. For mixed deployments, keep one order line per OEM reference and reconcile each received unit with its intended port. For this model, the principal parameters are data rate 103.12Gbps (4x 25.78GGbps), wavelength 1271nm,1291nm,1311nm,1331nm, rated reach 2km on SMF / 100m on OM3 MMF.
Brocade Compatibility and Factory Testing
Compatibility testing for QSFP-LX4-100G 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.
Ordering Information
Use QSFP-LX4-100G as the compatibility cross-reference and QSFP-LX4-100G 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.
Quality Assurance and Packaging
Each QSFP-LX4-100G 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.
Frequently Asked Questions
Is this an original Brocade transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-LX4-100G, not an original Brocade-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF/MMF. The specified maximum reach is 2km on SMF / 100m on OM3 MMF, 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.