Juniper 740‑031980 SFP+ 10GBASE‑SR transceiver FTLX8571D3BNL‑J1
The Juniper 740-031980 is a high-performance 10GBASE-SR SFP+ optical transceiver module, OEM manufactured by Finisar (FTLX8571D3BNL-J1). Operating at an 850nm VCSEL wavelength over multimode fiber (MMF), it delivers 10-Gigabit Ethernet short-reach connectivity up to 300 meters on OM3 (and up to 400m on OM4) via a duplex LC interface.Featuring an Extended Operating Temperature range (0°C ~ +85°C ）per Finisar specifications, this hot-pluggable SFP+ MSA module is engineered for enhanced thermal headroom in high-density switch chassis or non-climate-controlled environments. Pre-programmed with genuine Juniper EEPROM firmware, it provides native plug-and-play recognition across Juniper EX, QFX, MX, PTX, and SRX platforms with full DDM (Digital Diagnostic Monitoring) support.
Model / Product Code
FTLX1371D3BNL-J1
Max Transmission Distance
300m
Laser Class
Class 1 Laser
Operating Temperature
0°C to 85°C
Typical Applications ✨Data Center Leaf‑Spine & ToR Uplinks: Provides short‑range 10G inter‑switch and server-to-switch (10GbE NIC) connections within server racks over OM3/OM4 multimode fiber (up to 300m on OM3 / 400m on OM4).
✨Enterprise Campus Access‑to‑Aggregation: Delivers high-bandwidth 10G optical uplinks for Juniper EX series campus access switches (e.g., EX4300, EX4400) to core and distribution layers.
✨Core & Aggregation Networking: Interconnects high‑density 10G SFP+ ports across QFX series data‑center switches (QFX5100, QFX10002) and MX series routing platforms.Security Gateway
✨Optical Expansion: Expands 10G optical interfaces on Juniper SRX security firewalls (e.g., SRX380, SRX1500, SRX4600) for secure, high-throughput WAN/LAN connectivity.
✨High-Density Hot-Aisle & Extended-Temp Deployments: Built with an extended case operating temperature (0℃ to +85℃), making it uniquely suited for elevated-temperature hot-aisles, high-density switch chassis, and non-climate-controlled edge/remote closets.