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QSFP-40GE-LR4-C
40GBASE-LR4 QSFP+ SMF Module Cisco Compatible
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QSFP-40GE-LR4-C is a QSFP transceiver module that supports a 40G data rate with LC connectors and is engineered for long-range performance. It is optimized for Ethernet applications in data centers, enterprise networks, and telecom infrastructures, offering a reliable solution for high-speed optical communications.
This compact module features a standardized QSFP form factor and physical dimensions that enable easy integration into modern networking equipment. Designed specifically for single-mode fiber transmission, QSFP-40GE-LR4-C meets stringent industry requirements for long-haul applications while supporting Ethernet protocols efficiently.
QSFP-40GE-LR4-C price is is available on request. Get immediate quote.
Request bulk order quote for QSFP-40GE-LR4-C for additional pricing. Browse the full Cisco Compatible Qsfp+ series or explore all Orm products.
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| QSFP-40GE-LR4-C |  QSFP-40G-SR4-C |  QSFP-40G-CSR4-C |  QSFP-40G-ER4-C |  WSP-Q40GLR4L-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP | QSFP | QSFP | QSFP+ |
| Data Rate | 40G | 40G | 40G | 40G | 40G |
| Connector Type | LC | MPO | LC | LC | LC |
| Wavelength | 1310 nm | 850nm | N/A | 1310 nm | 1310nm |
| Transmission Distance | Long-Range | Short-Range | Short-Range | Extended-Range | Long-Range |
| Fiber Type | Single-mode | Multi-mode | N/A | Single-mode | Single-mode |
| Max Distance | 10 km | 100m (OM3)/150m (OM4) | N/A | 40 km | 10 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Ethernet | Ethernet | Ethernet | Fiber | Fiber |
| Power Consumption | 3.0 W | 4.2W | N/A | N/A | 6.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco | Cisco | Cisco / Juniper / Huawei / Arista |
| Product Name | QSFP-40GE-LR4-C | QSFP-40G-SR4-C | QSFP-40G-CSR4-C | QSFP-40G-ER4-C | WSP-Q40GLR4L-C 40G QSFP+ Long-Range Transceiver |
| Height | 0.2 inches | N/A | N/A | N/A | 0.7 inches |
| Width | 0.55 inches | N/A | N/A | N/A | 0.9 inches |
| Depth | 0.375 inches | N/A | N/A | N/A | 1.2 inches |
| Weight | 0.15 lbs | N/A | N/A | N/A | 0.12 lbs |
Flawless 40G LR4 performance over 10KM. This module is stable, high-performing, and fully compatible with our core Cisco hardware. Excellent signal margins on SMF.
Reliable 40G LR4 connectivity. The reach is accurate and provides the flexibility we need for campus-wide links. Highly satisfied with the stability and throughput.
Consistent 40G throughput. This LR4 module is robust and was recognized instantly by our routers. No downtime since installation in our network backbone.
Exceptional signal quality over 10KM. This LR4 transceiver is built for mission-critical infrastructure. Reliable performance matches expensive OEM optics perfectly. Highly recommended.
Professional 40G LR4 module. It handles 10KM distances with ease while maintaining rock-solid speeds. A top-tier choice for any enterprise fiber transport network.
The QSFP-40GE-LR4-C is a 40GBASE-LR4 QSFP+ single-mode fiber (SMF) transceiver compatible with Cisco platforms, designed for 40 Gbps data links up to 10 km.
The QSFP-40GE-LR4-C supports a line rate of 40 Gbps aggregated over four 10 Gbps wavelengths.
This module reliably transmits 40 Gbps up to 10 km over single-mode fiber.
It employs four LAN-WDM wavelengths at 1295 nm, 1300 nm, 1305 nm, and 1310 nm.
Yes. It is fully compatible with Cisco QSFP+ ports and passes Cisco’s diagnostic and interoperability tests.
It uses single-mode fiber with an MPO/MTP 12-fiber connector terminated to four LC duplex cables.
Yes. It provides real-time monitoring of temperature, supply voltage, optical output power, and optical input power via the I2C interface.
The QSFP-40GE-LR4-C operates between 0 °C and 70 °C (32 °F to 158 °F).
Its maximum power consumption is 3.5 W, ensuring efficient energy use in high-density deployments.
Yes. It supports hot-plug capability, allowing insertion or removal without powering down the host device.
It meets IEEE 802.3ba 40GBASE-LR4, RoHS, and MSA QSFP+ specifications.
Align the module with the QSFP+ port, push until it clicks, then connect the LC fiber cables to the designated ports.
Yes. It is fully RoHS compliant, ensuring restriction of hazardous substances in electronics.
The module offers a link budget of approximately 12 dB, depending on system margin and connector losses.
No. It uses LAN-WDM wavelengths and is not designed for standard CWDM channel spacing.
It is ideal for data centers, enterprise campus backbones, and high-speed aggregation networks.