QSFP-40GE-LR4 Cisco Compatible 40G 10KM SMF QSFP Transceiver
Cisco compatible QSFP-40GE-LR4 - Key Features
- Compatibility: Cisco
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 10 km
- Average Link Budget: 6.6 dB
- Tx Wavelength: CWDM 4 Ch
- Supported Data Rate: 44.8 Gbps
- DDM/DOM: Supported
- Temperature Range: Standard 0°-70°C
Cisco QSFP-40GE-LR4 Price
Cisco compatible QSFP-40GE-LR4 Specifications
Form Factor | QSFP+ |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 10 km |
Average Link Budget | 6.6 dB |
TX Wavelength | 4-channel CWDM (1271/1291/1311/1331 nm) |
RX Wavelength | 4-channel CWDM (1271/1291/1311/1331 nm) |
Supported Data Rate | 44.8 Gbps |
Supported Ethernet Applications | 40G Ethernet (41.25Gbps) |
Optical Transport Network (OTN) Applications | OTU3 (43.01Gbps), OTU3e2 (44.58Gbps) |
SDH/SONET Standards | STM-256 (39.81 Gbps) |
DDM/DOM | Supported |
Transmitter Type | DFB Laser |
Tx Wave Bandwidth | 4 WDM Seperated 1310nm Lanes (13 nm (1271, 1291, 1311, 1331)) |
Average Launch Power (Min) Each Lane | -6 dBm |
Average Launch Power (Max) Each Lane | 3 dBm |
Receiver Type | PIN photodiode |
Average Receiver Sensitivity (Min) Each Lane | -12.6 dBm |
Average Receiver Sensitivity (Max) Each Lane | 3 dBm |
Receiver Overload | 3 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power | +3.3V single power supply |
Compliance | IEEE 802.3ba, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8438i, QSFP+ MSA, RoHS, SFF-8436 |
Cisco compatible QSFP-40GE-LR4 Datasheet
v2Complete technical specifications and product details
Cisco compatible QSFP-40GE-LR4 Description
EdgeOptic's QSFP-40GE-LR4 compatible is a Cisco-coded version of the EdgeOptic 40G-QSFP-10 multi-vendor 40GBASE-LR4 transceiver. It ships with Cisco-recognized EEPROM, so IOS XE and NX-OS accept it as a native 40G QSFP+ optic without the 'service unsupported-transceiver' command.
The module follows the 40GBASE-LR4 standard, IEEE 802.3ba Clause 87. Four CWDM lanes at 1271, 1291, 1311 and 1331 nm multiplex onto one LC duplex single-mode pair, reaching 10 km over G.652 OS2 fiber with a 6.6 dB link budget. A DFB laser drives each lane at −6 to +3 dBm; the PIN receiver holds −12.6 dBm per-lane sensitivity and tolerates up to +3 dBm overload. Operating range is 0 to 70 °C and digital diagnostic monitoring is supported.
The '40GE' designation marks this as the Ethernet-only Cisco SKU, used on platforms that label 40-Gigabit Ethernet ports as 40GE. It works in Cisco platforms with 40GE-designated QSFP+ ports and carries 40 Gigabit Ethernet only, so don't deploy it where OTU3 or other OTN framing is required. Don't confuse it with QSFP-40G-LR4, the multirate Cisco SKU that adds OTU3, or with the QSFP-40G-LR4-S spare PID; they are separate part numbers. Confirm both ends of the link run the same 40GBASE-LR4 lane plan during commissioning.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For volume pricing or platform questions, contact our sales team.
Frequently Asked Questions
What is the difference between QSFP-40GE-LR4 and QSFP-40G-LR4 on Cisco platforms?
QSFP-40GE-LR4 is the Ethernet-only SKU, named for the '40GE' port designation Cisco uses on many platforms. QSFP-40G-LR4 is the multirate SKU that also carries OTU3 for transport applications. Both are 40GBASE-LR4 LC duplex optics over 10 km, but choose QSFP-40GE-LR4 for 40 Gigabit Ethernet ports and QSFP-40G-LR4 when you need the OTU3 rate.