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Small silver SFP transceiver module with LC duplex port and side label

Brute Networks

Brute Networks 1000BASE-LX 10km 1310nm SFP transceiver J4859B

SKU CH-VJV1-4T36K

1 Gbps SFP transceiver reaches 10 km over single-mode fibre at 1310 nm wavelength

  • Port count1000Base-LX
  • Product typeTransceiver
  • Supported standardsSMF
  • Optical wavelength1310 nm
  • Fiber modeSingle-mode Optical Fiber
  • Supported protocolsHCRP, SPP
  • 10 km single-mode reach at 1310 nm wavelength
  • 1 Gbps transfer rate over LC single-mode fibre
  • Operates from 0 °C to 70 °C commercial range
  • 100 % compatible with HP J4859B equipment
  • MSA-compliant SFP with power, link and speed LEDs

HP J4859B Compatible SFP

This Brute Networks transceiver follows the 1000BASE-LX standard and fits SFP slots on HP ProCurve switches and other MSA-compliant gear. It targets network engineers who need a cost-effective way to link two sites over single-mode fibre. The module runs at 1 Gbps and is rated for commercial temperatures from 0 to 70 °C. It arrives new and carries a lifetime warranty from the supplier.

1310 nm 10 km Reach

The 1310 nm laser drives signals up to 10 km over standard single-mode fibre with LC connectors. HCRP and SPP protocol support means the link negotiates cleanly with HP switching stacks. Front-panel LEDs show power, link activity, full-duplex status and speed so technicians can verify a live circuit at a glance. No extra cables or software licences are bundled.

Single-Mode Distance Headroom

The 10 km budget covers most campus, metro-ring and building-to-building runs without inline amplification. At 1 Gbps the module saturates a gigabit uplink but cannot serve 10 Gbps or multi-gig ports. Builders who need longer reach, higher bandwidth or dense wavelength division multiplexing must choose a different transceiver class.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 91% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameHP
Model nameJ4859B
Product typeTransceiver
Performance
Transfer speed1 Gbit/s
Connectivity
Supported standardsSMF
Optical wavelength1310 nm
Fiber modeSingle-mode Optical Fiber
Supported protocolsHCRP, SPP
Maximum range10km
Ports & slots
Port count1000Base-LX
Size & build
Product weight1 oz
Environment & compliance
Temperature range0� ~ 70� C
More details
Indicator lightsPower, Link/Activity, Full-Duplex, and Speed

Questions about this item

Does the 1310nm laser in this J4859B transceiver degrade over time and require scheduled replacement?

The module operates within a 0–70 °C commercial range and carries a lifetime warranty, so no scheduled laser replacement is required under normal conditions.

What limits continuous 1 Gbps throughput over the full 10km single-mode link?

The 10km reach at 1310nm is the specified distance limit; signal attenuation beyond that distance will reduce link reliability.

How much heat does the SFP generate when running at 1000Mbps all day in a 70 °C environment?

Rated for 0–70 °C commercial operation with no fan, the transceiver dissipates low power typical of 1 Gbps SFP modules and relies on host-switch airflow for cooling.

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