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QSFPP-40GBASE-ER4
40GBASE-ER4 QSFP+ pluggable transceiver
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QSFPP-40GBASE-ER4 is a high-performance QSFP+ transceiver that delivers 40G Ethernet connectivity using an LC connector and single-mode fiber. Designed for extended-range applications, it enables transmission distances up to 40 km, making it an excellent fit for data centers, enterprise networks, and telecom environments while conforming to standardized physical dimensions.
QSFPP-40GBASE-ER4 supports critical network protocols and offers reliable operation within an ambient temperature range of 0 to 70°C with an input voltage of 3.3V. Its optimized design and robust compatibility with leading industry platforms ensure that it meets the demands of next-generation high-speed networking applications.
QSFPP-40GBASE-ER4 price is $17,936.00, a 37% saving from the Juniper list price of $28,473.00. QSFPP-40GBASE-ER4 is in stock and available for next-day dispatch. (terms applied)
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In a multivendor data center spanning two campuses 30 km apart, network architects deploy the QSFPP-40GBASE-ER4 QSFP+ pluggable transceiver over single-mode fiber to maintain 40 Gb/s full-duplex throughput. The transceiver’s 1310 nm CWDM wavelength and integrated digital diagnostics module (DDM) ensure low insertion loss, real-time link monitoring, and seamless interoperability. Benefit: Simplified fiber management with carrier-grade reach, zero packet loss, and sub-3 W power consumption reduces OPEX and latency-sensitive application risks.
A regional ISP leverages the QSFPP-40GBASE-ER4 QSFP+ transceiver to extend its metro Ethernet backbone over existing dark fiber infrastructure for premium business customers. The pluggable’s 40 km reach and high optical power budget support multiplexed CWDM channels, enabling scalable 40 GbE trunks across urban POPs without additional amplification. Benefit: Rapid service activation, predictable fiber budgeting, and improved SLAs with 40 Gb/s bandwidth at a lower total cost of ownership.
In a university supercomputing environment, IT teams interlink GPU-accelerated compute nodes located in separate facilities using QSFPP-40GBASE-ER4 QSFP+ modules. The transceiver’s robust digital diagnostics and temperature-hardened design deliver consistent 40 Gb/s data transfers up to 40 km over single-mode fiber. Benefit: Optimized MPI traffic with deterministic latency, enhanced cluster utilization, and simplified infrastructure upgrades that support next-gen AI and big data workflows.
To get the detailed certification, please go to the Compliance Center.
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP+ | SFP | QSFP | CFP Gen2 | SFP |
| Data Rate | 40G | 10G | 40G | 100G | OC48 |
| Connector Type | LC | LC | MPO | LC | LC |
| Wavelength | 1310 nm | 1471 nm | 850 nm | 1310 nm | 850 nm |
| Transmission Distance | Extended-Range | Extended-Range | Short-Range | Long-Range | Short-Range |
| Fiber Type | Single-mode | Single-mode | Multi-mode | Single-mode | Multi-mode |
| Max Distance | 40 km | 80 km | 150 meters | 10 km | 300 m |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | SONET/SDH |
| Network Interface | Ethernet | Fiber | Fiber | Ethernet | Fiber |
| Power Consumption | N/A | 1.5W | 3.5W | N/A | 3.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | -40 to 85°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 | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | QSFPP-40GBASE-ER4 | SFPP-10G-CWDM1471 | QSFPP-40GBASE-SR4 | CFP-GEN2-100GBASE-LR4 | SFP-1OC48-SR |
| Height | N/A | 0.33 inches | 0.66 inches | N/A | 0.67 inches |
| Width | N/A | 0.53 inches | 1.18 inches | N/A | 2.00 inches |
| Depth | N/A | 2.22 inches | 0.42 inches | N/A | 1.00 inches |
| Weight | N/A | 0.10 lbs | 0.16 lbs | N/A | 0.2 lbs |
Reliable 40G ER4 optic for extended reach links.
Stable signal levels across all lanes.
Worked perfectly in metro environments.
No packet loss observed.
Good value long range QSFP+.
The QSFPP-40GBASE-ER4 is a hot-pluggable QSFP+ optical transceiver that delivers 40 Gbps data rates over single-mode fiber for long-reach networking.
The 40GBASE-ER4 QSFP+ transceiver operates at 1310 nm, providing optimal performance for single-mode fiber links up to 40 km.
The QSFPP-40GBASE-ER4 supports link lengths up to 40 km over single-mode fiber, making it ideal for data center interconnects.
Yes, the 40GBASE-ER4 QSFP+ transceiver is designed for single-mode fiber (SMF) deployment and is not compatible with multimode fiber.