QSFP-LR4-100GMArista Networks QSFP-LR4-100GM Compatible 100G QSFP28 LR4 Transceiver Module
This Arista Networks QSFP-LR4-100GM compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 1310nm for up to 10km, using Duplex LC. Complete parameters and related OEM references help structured fiber installations preserve a documented and serviceable optical channel.
OEM Part Number: QSFP-LR4-100GMHT Part Number: QSFP-LR4-100GM
Product Highlights
- Compatible alternative to Arista Networks QSFP-LR4-100GM
- 100G connectivity at Dual Rate 103.1Gbps and 112Gbps
- Optical wavelength: 1310nm
- Specified reach: 10km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | QSFP-LR4-100GM |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max Data Rate | Dual Rate 103.1Gbps and 112Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 10km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | 4 x LAN WDM DML TOSA |
| Receiver Type | 4 x PIN ROSA |
| TX Power(100G) | -4.3~4.5dBm |
| Receiver Sensitivity(100G) | <-8.6dBm |
| TX Power(112G) | -0.6~4dBm |
| Receiver Sensitivity(112G) | <-8.4dBm |
| Transmit and Dispersion Penalty | 2.2dB |
| Power Budget | 6.3dB |
| Power Consumption | ≤3.5W |
| Extinction Ratio | >4dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Modulation Format | NRZ |
| Inbuilt FEC | No |
| Core Size | 9um/125um |
| Protocols | 100G Ethernet, 25G Ethernet, OTN OTU4 4I1-9D1F |
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 100G interface configuration must match the remote equipment; sharing a QSFP28 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 interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Arista Networks Compatibility and Factory Testing
Compatibility testing for QSFP-LR4-100GM 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.
Optical Acceptance, Diagnostics and Handling
For this model, the stated optical power budget is 6.3dB. 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.
Structured Fiber Pathways and Serviceability
Treat the transceiver as part of the complete channel. Follow the intended patch-panel route, maintain bend control and leave service access around the port. Confirm connector polish and fiber type at every mated pair; a documented service allowance is preferable to excess slack concealed inside a rack. For this model, the principal parameters are data rate Dual Rate 103.1Gbps and 112Gbps, wavelength 1310nm, rated reach 10km.
Ordering Information
When ordering, specify QSFP-LR4-100GM, QSFP-LR4-100GM, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. Neutral labels, customer packaging and project-specific compatibility review are available on request.
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.
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 Arista Networks transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-LR4-100GM, not an original Arista Networks-branded module.
Which fiber and connector are required?
Use Duplex LC 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.
