Juniper Networks JNP-QSFP-40G-LR4 QSFP+ 40GBase-LR4 40 Gigabit Optics 1310nm for up to 10km Trans

Overview
The Juniper Networks JNP-QSFP-40G-LR4 is a high performance QSFP+ transceiver designed for 40 Gigabit Ethernet networks. Operating at 1310nm, this optics module delivers reliable long-reach connectivity up to 10km over single-mode fiber. It is ideal for data center interconnects, campus backbone, and carrier grade deployments where low latency and high bandwidth are critical.

Key Features

• 40GBase-LR4 compliance for 40 Gigabit Ethernet
• 1310nm wavelength optimized for single-mode fiber
• Reach of up to 10km (OTU-2, 40GBASE-LR4) on standard SMF
• Low power consumption and hot-swappable design
• Digital diagnostic monitoring (DDM) for real-time performance tracking
• Compatible with Juniper QFX, EX, and MX series switches and routers

Technical Specifications

• Form factor: QSFP+ (LC duplex connector)
• Data rate: 40 Gbps
• Wavelength: 1310 nm
• Maximum reach: 10 km on OM3/OM4 multimode or OS2 single-mode fiber
• Transmit power: -8.5 dBm typical
• Receive sensitivity: -22 dBm typical
• Operating temperature: 0 to 70 degrees C
• Power consumption: 3.5 W max
• Compliance: IEEE 802.3ba, 802.3bj

Applications

• Data center to data center (DCI) links requiring high bandwidth over long distances
• Campus and metropolitan area network (MAN) backbones
• High-performance computing clusters and storage area networks
• Carrier Ethernet and service provider aggregation points
• Enterprise core and aggregation layers needing scalable 40G connectivity

By choosing the Juniper JNP-QSFP-40G-LR4, network operators gain a robust, future-proof solution that simplifies deployment, reduces power costs, and ensures consistent performance across demanding environments.