Juniper 740‑047680 SFP+ 10GBASE‑ER transceiver FTLX1672D3BNL‑J4 e‑temp
The Juniper Networks 740-047680 (Finisar P/N: FTLX1672D3BNL-J4, Marketing P/N: SFPP-10GE-ER-XT) is an authentic extended-temperature 10GBASE-ER SFP+ optical transceiver module engineered for long-reach 10-Gigabit Ethernet deployments over single-mode fiber (SMF). Operating at a 1550nm wavelength with a high-performance EML laser and duplex LC optical interface, it supports transmission reaches up to 40 kilometers over standard OS2 single-mode optical fiber per IEEE 802.3ae standards.Factory-printed with an extended operating temperature rating of 85C (0°C to +85°C) and pre-coded with official SFPP-10GE-ER-XT firmware.
Model / Product Code
FTLX1672D3BNL-J4
Max Transmission Distance
40Km
Laser Class
Class 1 Laser 21CFR 1040.10
Operating Temperature
0°C to 85°C
Typical Applications ✨Enterprise Long‑Reach Backbone Uplinks: Delivers 10G long‑haul uplinks for enterprise campus, remote branch sites, up to 40 km over OS2 SMF, backward compatible with OS1.
✨Data Center Inter-Building Links (40km DCI): Interconnects geographically separated data center facilities,and regional halls over 40km single-mode fiber links without requiring external optical amplifiers.
✨Wide Temperature Hardware Deployment (E‑TEMP): Suitable for poorly‑cooled equipment rooms, outdoor cabinet indoor units and edge aggregation environments requiring 0‑85°C operating range.
✨Core & Aggregation (MX / QFX / PTX): Zero‑alarm 10G long‑haul backbone links for MX line‑cards, QFX data‑center switches and PTX routing platforms.
✨Security Gateway WAN Uplinks: 10G 40km optical WAN uplink for SRX series firewalls with native Junos OS recognition.