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Overview
Specs
Product Number | Arista QSFP-40G-LR4 |
Manufacturer | Arista |
Specification | Description |
Type | 40GBase-LR4 QSFP+ Module |
Wavelength Range | CWDM 1270-1330nm |
Bandwidth | 40 Gbps total |
Data Rate per Lane | 10.3 Gbps |
Maximum Distance | 10km over SMF |
Channels | 4 CWDM (1271, 1291, 1311, 1331nm) |
Standard Compliance | QSFP+ MSA |
Max Power Consumption | < 3.5W |
Monitoring Features | Supports DDM |
Temperature Range (Operating) | 0°C to 70°C |
Ethernet Compatibility | 40GBASE-LR4 |
Transmit Wavelength | 1270-1330nm |
Maximum Reach | 10km |
Fiber Type | Single Mode Fiber (SMF) |
Performance Level | 40GBase |
Connection Interface | CWDM-LR4 |
Diagnostic Support | Yes (DDM) |
Connector | LC Duplex |
Optical Budget | 6.7 dB |
Transmit Power Range | -7 to +2.30 dBm |
Receive Power Range | -13.70 to +2.30 dBm |
Standard Operating Temperature | 0°C to 70°C |
Extended Operating Temperature | -5°C to +85°C |
Industrial Operating Temperature | -40°C to +85°C |
QSFP-40G-LR4
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Product Description
The QSFP-40G-LR4 is a 40GBASE-LR4 QSFP+ transceiver that operates over a wavelength range of CWDM 1271~1331nm, utilizing four CWDM channels (1271, 1291,1311, and 1331nm) to achieve a high channel capacity of 40 Gbps, with a transmission data rate of up to 10.3Gbps per channel. Designed for long-reach applications, it supports links up to 10km on single-mode fiber (SMF) and is compliant with the QSFP+ MSA, featuring a dual-LC connector. This transceiver also supports Digital Diagnostics Monitoring (DDM), operates within a temperature range of 0°C to 70°C, and has a low power dissipation of <3.5 W.Key Feature for the QSFP-40G-LR4
- What is the data rate supported by the 40GBASE-LR4 QSFP+ Transceiver?
The transceiver supports a data rate of up to 10.3Gbps per channel, with a total channel capacity of 40 Gbps. - Can the part be used for long-distance transmission?
Yes, it is designed for up to 10km links on single-mode fiber. - What type of wavelengths do the CWDM channels of this transceiver operate on?
The transceiver operates on 4 CWDM channels: 1271, 1291, 1311, and 1331nm. - What are the minimum and maximum operating temperatures for this device?
The operating temperature range is from 0°C to 70°C under standard conditions. - Does the 40GBASE-LR4 QSFP+ support Digital Diagnostics Monitoring (DDM)?
Yes, it supports Digital Diagnostics Monitoring. - What is the power dissipation of the device?
The power dissipation is less than 3.5 W. - What type of fiber is required for the 40GBASE-LR4 QSFP+ Transceiver?
Single-mode fiber (SMF) is required for optimal performance. - Is the transceiver compliant with any standards?
It is compliant with the QSFP+ MSA (Multi-Source Agreement). - What is the optical power budget of the transceiver?
The optical power budget is 6.7 dB. - What are the minimum and maximum receiver power levels?
The RX power levels range from -13.70 to +2.30 dBm.
Product Review
The Arista QSFP-40G-LR4 transceiver offers a high channel capacity of 40 Gbps, suitable for long-distance transmission up to 10km on single-mode fiber, leveraging CWDM technology across four channels (1271, 1291,1311, and 1331nm), which ensures broad compatibility and high data throughput. However, its power dissipation is less than 3.5W, indicating efficient energy use but necessitating consideration of thermal management in densely packed systems. Additionally, while it supports Digital Diagnostics Monitoring (DDM) for enhanced maintenance capabilities, the operating temperature range is limited to 0°C to 70°C, potentially restricting its deployment in environments with extreme temperature conditions without additional climate control measures.
Overview
Specifications
Product Number | Arista QSFP-40G-LR4 |
Manufacturer | Arista |
Specification | Description |
Type | 40GBase-LR4 QSFP+ Module |
Wavelength Range | CWDM 1270-1330nm |
Bandwidth | 40 Gbps total |
Data Rate per Lane | 10.3 Gbps |
Maximum Distance | 10km over SMF |
Channels | 4 CWDM (1271, 1291, 1311, 1331nm) |
Standard Compliance | QSFP+ MSA |
Max Power Consumption | < 3.5W |
Monitoring Features | Supports DDM |
Temperature Range (Operating) | 0°C to 70°C |
Ethernet Compatibility | 40GBASE-LR4 |
Transmit Wavelength | 1270-1330nm |
Maximum Reach | 10km |
Fiber Type | Single Mode Fiber (SMF) |
Performance Level | 40GBase |
Connection Interface | CWDM-LR4 |
Diagnostic Support | Yes (DDM) |
Connector | LC Duplex |
Optical Budget | 6.7 dB |
Transmit Power Range | -7 to +2.30 dBm |
Receive Power Range | -13.70 to +2.30 dBm |
Standard Operating Temperature | 0°C to 70°C |
Extended Operating Temperature | -5°C to +85°C |
Industrial Operating Temperature | -40°C to +85°C |