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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

  • Device TypeTransceiver
  • StandardsSMF
  • Wavelength1310nm
  • Fiber CableSingle-mode Optical Fiber
  • ProtocolsHCRP, SPP
  • Ports1000Base-LX
  • 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.

Highlights

  • 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

Specifications

BrandHP
ModelJ4859B
Device TypeTransceiver
StandardsSMF
Wavelength1310nm
Fiber CableSingle-mode Optical Fiber
ProtocolsHCRP, SPP
Ports1000Base-LX
Max Distance10km
Transfer Rate1 Gbps
LEDsPower, Link/Activity, Full-Duplex, and Speed
Temperature0� ~ 70� C
Weight1 oz.
DisclaimerThird Party product. Part number J4859B is property of HP.

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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