Juniper 25GBASE-LR SFP28 Transceiver — 10km Single-Mode Fiber

The Juniper 740-071562 is a 25GBASE-LR SFP28 optical transceiver delivering 25GbE over single-mode fiber up to 10km at 1310nm via duplex LC connector — Juniper-genuine for use in Juniper QFX, MX, and PTX platforms requiring 25G SMF connectivity for data center spine-leaf links, server uplinks, and service provider access applications.

Key Features

• 25GBASE-LR SFP28 for 10km 25GbE over single-mode fiber
• 1310nm single-lane transmission for 25G over standard OS1/OS2 SMF infrastructure
• Duplex LC connector compatible with standard SMF LC patch panels
• Juniper part number 740-071562 for platform-verified compatibility
• Low-power SFP28 form factor for high-density 25G port deployments

Product Specifications

• Part Number: 740-071562
• Manufacturer: Juniper Networks
• Form Factor: SFP28
• Speed: 25GbE (25GBASE-LR)
• Wavelength: 1310nm
• Connector: Duplex LC
• Fiber Type: Single-Mode Fiber (SMF, OS1/OS2)

Transceiver & Interface Specifications

• Max Distance: 10km over OS1/OS2 SMF
• TX Power: -8.2 to +0.5 dBm
• RX Sensitivity: -18.4 dBm (min)
• Power Consumption: Typically 1.0W
• DDM/DOM: Yes (Digital Diagnostics Monitoring)
• Operating Temperature: 0°C to 70°C (commercial)

Use Cases

• 25GbE server-to-switch SMF uplinks in data centers with single-mode fiber cabling
• Juniper QFX spine-leaf 25G inter-switch links over SMF up to 10km
• Service provider 25G access and aggregation links requiring SMF reach beyond MMF limits
• Inter-building 25GbE links in campus environments using existing SMF infrastructure

Compatibility

• Compatible with Juniper QFX, MX, and PTX platforms with SFP28 25G ports
• Requires OS1/OS2 single-mode fiber with duplex LC connectors
• IEEE 802.3cc 25GBASE-LR compliant
• Also available as SFP-25G-LR-C (Juniper-coded variant) — both are Juniper-genuine 25GBASE-LR SFP28

Frequently Asked Questions

What is the difference between 740-071562 and SFP-25G-LR-C?

Both are Juniper-genuine 25GBASE-LR SFP28 transceivers for 10km SMF. The 740-071562 uses Juniper's numeric part number designation, while SFP-25G-LR-C uses the alphanumeric part number format. Both are compatible with the same Juniper platforms and deliver identical optical performance.

Can the 740-071562 be used for 25GbE breakout from a 100G QSFP28 port?

No — the 740-071562 is a standalone 25GBASE-LR SFP28 for dedicated 25GbE SFP28 ports. For 4x25GbE breakout from a 100G QSFP28 port, a QSFP28 to 4xSFP28 breakout cable or structured cabling solution is used, with individual 25GBASE-LR SFP28 optics at the SFP28 end.

Does the 740-071562 support Digital Diagnostics Monitoring?

Yes — DDM/DOM is supported, enabling Junos OS to report real-time TX/RX optical power, temperature, voltage, and laser bias current for proactive transceiver health monitoring via CLI, SNMP, or Juniper Mist.

The Juniper 740-071562 provides reliable 25GBASE-LR SMF connectivity in the compact SFP28 form factor — delivering 10km single-mode 25GbE reach with DDM monitoring and Juniper platform compatibility for data center, campus, and service provider 25G deployments.