
The 40G QSFP+ QSFP-40G-LR4-20 20km 1310nm Duplex LC/UPC Module, Cisco is a QSFP+ optical transceiver delivering 41.2Gbps (4x 10.3Gbps) over SMF. Operating at 1310nm with a Duplex LC interface, it reaches 20km and is compliant with QSFP+ MSA, SFF-8436. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in 40G Ethernet data center and enterprise network environments.
Product Highlights
- QSFP+ form factor, 41.2Gbps (4x 10.3Gbps) data rate
- Wavelength: 1310nm
- Connector: Duplex LC
- Reach: up to 20km
- Fiber media: SMF
- Operating temperature: 0 to 70°C(32 to 158°F)
Specifications
| Cisco Compatible | QSFP-40G-LR4-20 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP+ |
| Max. Data Rate | 41.2Gbps (4x 10.3Gbps) |
| Wavelength | 1310nm |
| Max. Transmission Distance | 20km |
| Connector | Duplex LC |
| Media | SMF |
| Transimitter Type | DFB CWDM |
| Receiver Type | PIN |
| TX Power | -4.5~2.3dBm |
| Receiver Sensitivity | <-12.5dBm |
| Power Budget | 8dB |
| Receiver Overload | 3.3dBm |
| Max. Power Consumption | ≤3.5W |
| Extinction Ratio | >3.5dB |
| Operating Temperature | 0 to 70°C(32 to 158°F) |
| Protocols | QSFP+ MSA, SFF-8436 |
Applications
Network architects choose the 40G QSFP+ QSFP-40G-LR4-20 20km 1310nm Duplex LC/UPC Module, Cisco for 40G Ethernet data center and enterprise network environments: it runs 41.2Gbps (4x 10.3Gbps) over SMF and reaches 20km. With its Duplex LC optical interface, the module works directly with the SMF infrastructure already installed in most facilities. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QSFP-40G-LR4-20.
Standards and Compatibility
On the compatibility side, this unit is the practical equivalent of the Cisco part QSFP-40G-LR4-20 and works in Cisco systems out of the box. Standards compliance covers QSFP+ MSA, SFF-8436.
Ordering Information
Order this product as QSFP-ELR4-40G. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.
Delivery
Goods are normally sent by courier such as DHL, UPS, FedEx, TNT or EMS; air and sea freight are also available on request. Commonly used items are kept in stock for immediate shipment, and out-of-stock items are usually delivered within a few working days. We can also ship on your courier account or hand goods to your appointed forwarder.
Our Testing Process
Production samples and every outgoing batch pass through bit-error-rate measurement, temperature verification and plug-in compatibility checks on mainstream switches and routers. Because we are the manufacturer, any issue found in testing is fed back to the production line immediately instead of being passed on to customers.
Package
Products are first packed into blister trays or self-sealed bags and then into cartons. Standard labels and marks are applied by default, and customized packing and labeling are available on request.



