Juniper QSFP-LX4-100G Compatible 100G QSFP28 LX4 Transceiver Module
The QSFP-LX4-100G compatible module serves equipment requiring a 100G QSFP28 interface with 1271nm,1291nm,1311nm,1331nm optics and a 2km on SMF / 100m on OM3 MMF rating. Connection is through Duplex LC. Product data, application guidance and factory verification are presented together to support procurement teams match an equipment parts list to a clearly defined optical product.
OEM Part Number: QSFP-LX4-100GHT Part Number: QSFP-LX4-100G
Product Highlights
- Compatible alternative to Juniper 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. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. 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.
Juniper Compatibility and Factory Testing
The module is checked for host recognition as QSFP-LX4-100G, 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.
Ordering Information
Quote HT part number QSFP-LX4-100G together with OEM reference QSFP-LX4-100G and quantity. Add the host model and software release when pre-order verification is required. Neutral labels, customer packaging and project-specific compatibility review are available on request.
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.
Frequently Asked Questions
Is this an original Juniper transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-LX4-100G, not an original Juniper-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.