QSFP-40GE-LR4, Cisco QSFP-40GE-LR4, Cisco QSFP+ Transceiver, 40G LR4/10km/LC Duplex
$5,410
The Cisco QSFP-40GE-LR4 is a hot-pluggable, compact QSFP+ transceiver for 40 Gigabit Ethernet, designed for long-reach (LR4) data center and enterprise links up to 10km over single-mode fiber (SMF) using duplex LC connectors, multiplexing four 10G wavelengths for 40G total throughput, offering high-speed, reliable 40G connectivity with built-in digital diagnostics
Cisco QSFP-40GE-LR4
Product Details
- Form Factor:Â QSFP+Â (Quad Small Form-factor Pluggable Plus).
- Speed:Â 40 Gbps (4 x 10 Gbps channels).
- Reach:Â Up to 10 kilometers (km).
- Fiber Type:Â Single-Mode Fiber (SMF).
- Connector:Â Duplex LC.
- Wavelength:Â 1310nm (using WDM technology for 4 lanes).
- Technology:Â Four CWDM lanes MUX/DEMUX design.
- Standards:Â Compliant with IEEE 802.3ba 40GBASE-LR4 and QSFP+ MSA.
- Diagnostics:Â Digital Diagnostic Monitoring (DDM) via I2C interface for real-time monitoring.
- Power:Â Low power consumption (typically <2W or <2.5W).
- Application:Â Ideal for connecting switches, routers, and high-performance computing (HPC) in data centers and core networks.Â
Specifications details
QSFP-40GE-LR4 Specification |
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| Dimensions | 13.5 x 18.4 x 72.4 mm |
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   QSFP Port cabling specifications |
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| Wavelength (nm) | 1310 |
| Cable Type | SMF |
| Core Size (microns) | G.652 |
| Modal Bandwidth (MHz-km) | \ |
| Cable Distance | 10 km (6.2 miles) |
| Power Consumption (W) | 3.5 |
| Pull Tab Color | Blue |
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 Optical characteristics |
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| Transmit Power (dBm) | Max:+2.3 per lane
Min:-7.0 per lane |
| Receive Power (dBm) | Max:+2.3 per lane
Min:-13.7 per lane |
| Transmit and Receive Wavelength (nm) | Four lanes, 1271, 1291, 1311, 1331 |
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Environmental conditions |
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| Operating temperature | 0 to 70°C (32 to 158°F) |
| Storage temperature | -40 to 85°C (-40 to 185°F) |
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Regulatory and standards compliance |
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| Standards | •GR-20-CORE: Generic Requirements for Optical Fiber and Optical Fiber Cable
•GR-326-CORE: Generic Requirements for Single-Mode Optical Connectors and Jumper Assemblies •GR-1435-CORE: Generic Requirements for Multifiber Optical Connectors •IEEE 802.3ba (-SR4, -LR4) •IEEE 802.3ae (-CSR4) •QSFP+ MSA SFF-8436 •SFP+ MSA SFF-8431 and -8461 •RoHS 6 |
| Safety | •Cable jacket of QSFP copper modules is UL E116441 Compliant
•QSFP copper cables are ELV Compliant |
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