Juniper QSFP112-LR4-400G Compatible 400G QSFP112 LR4 Transceiver Module
This Juniper QSFP112-LR4-400G compatible transceiver provides 400G connectivity in a hot-swappable QSFP112 package. Its optical design operates at 1310nm for up to 10km, using Duplex LC UPC. Complete parameters and related OEM references help procurement teams match an equipment parts list to a clearly defined optical product.
OEM Part Number: QSFP112-LR4-400GHT Part Number: QSFP112-LR4-400G
Product Highlights
- Compatible alternative to Juniper QSFP112-LR4-400G
- 400G connectivity at 425Gbps (4x106.25Gb/s)
- Optical wavelength: 1310nm
- 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 | QSFP112-LR4-400G |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP112 |
| Max. Data Rate | 425Gbps (4x106.25Gb/s) |
| Wavelength | 1310nm |
| Max. Cable Distance | 10km |
| Connector | Duplex LC UPC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | PD |
| TX Power | -2.7~5.1dBm |
| Minimum Receiver Power | -9dBm |
| Power Budget | 6.3dB |
| Receiver Overload | 5.1dBm |
| Max. Power Consumption | 10W |
| Extinction Ratio | >3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x100G-PAM4 |
| Modulation (Optical) | 4x100G-PAM4 |
| CDR | TX and RX |
| Inbuilt FEC | No |
| Core Size | 9μm |
| Packaging Technology | COB |
| Protocols | QSFP-112 MSA, CMIS Rev 5.2, 100G Lambda MSA-400GBASE-LR4-10, OIF-CEI-112G-VSR-PAM4 |
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 QSFP112 housing alone does not make two transceiver types interoperable.
Before commissioning, measure the complete single-mode channel against the stated budget for 10km. Inspect every Duplex LC UPC connection and record diagnostic power where supported. Both ends must agree on rate, wavelength and optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -2.7~5.1dBm; the stated optical power budget is 6.3dB. 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.
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 425Gbps (4x106.25Gb/s), wavelength 1310nm, rated reach 10km.
Juniper Compatibility and Factory Testing
Factory verification starts with the expected QSFP112-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.
Ordering Information
Use QSFP112-LR4-400G as the compatibility cross-reference and QSFP112-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.
Quality Assurance and Packaging
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. 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 QSFP112-LR4-400G, not an original Juniper-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.