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Small rectangular metal module with LC optical port and gold edge connector

HP

HP J4858B Gigabit SX LC mini-GBIC SFP transceiver 1000Base-SX

SKU CH-6VMY-3ER5W

A mini-GBIC SFP transceiver for 1 Gbit/s multi-mode fibre links up to 1804.46 ft over 50/125 µm or 62.5/125 µm cable with an LC connector

  • Device TypeTransceiver
  • Supports 1 Gbit/s throughput via 1000Base-SX standard
  • Works with 50/125 µm multi-mode fiber for flexible deployment
  • Also compatible with 62.5/125 µm fiber for legacy links
  • Reaches 1804.46 ft maximum distance on supported fiber
  • LC duplex interface enables straightforward patch-panel connections

HP J4858B Gigabit SX LC mini-GBIC SFP transceiver

The HP J4858B is a hot-pluggable SFP transceiver built for Gigabit Ethernet links over multi-mode fibre. It serves network administrators and integrators who need a standards-based 1 Gbit/s uplink between switches, routers or media converters in campus or data-centre racks. The module accepts LC duplex connectors and draws power directly from the host port.

Multi-mode fibre distance and core support

The transceiver operates at 1000Base-SX wavelengths and supports both 62.5/125 µm and 50/125 µm graded-index fibre. Maximum reach is 1804.46 ft on either core size, so links longer than that distance will require a different optic or single-mode infrastructure. Only these two multi-mode standards are qualified; other fibre types are not supported.

Steady-state optical output under continuous traffic

Under sustained 1 Gbit/s load the laser maintains compliant average launch power and extinction ratio without the overshoot sometimes seen in short bursts. Eye-safety circuitry remains active at all times, and the module stays within its thermal envelope when installed in a properly ventilated chassis. No performance degradation occurs during prolonged full-rate transmission.

Highlights

  • Supports 1 Gbit/s throughput via 1000Base-SX standard
  • Works with 50/125 µm multi-mode fiber for flexible deployment
  • Also compatible with 62.5/125 µm fiber for legacy links
  • Reaches 1804.46 ft maximum distance on supported fiber
  • LC duplex interface enables straightforward patch-panel connections

Specifications

Device TypeTransceiver

Questions about this item

How far will the 1 Gbit/s link reach over multi-mode fibre in a real installation?

The transceiver supports up to 1804.46 ft on 62.5/125 µm or 50/125 µm multi-mode fibre at 1 Gbit/s.

What does the LC 1000Base-SX interface limit in practice?

The LC duplex connector carries 1000Base-SX signalling at 1 Gbit/s over multi-mode fibre up to the rated distance.

What slot and fibre patch cords are needed to mount this mini-GBIC?

It fits an SFP mini-GBIC slot and requires LC duplex patch cords matching 62.5/125 µm or 50/125 µm multi-mode fibre.

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