We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Five black SFP transceiver modules in a row

Axiom

Axiom J4859C-5PK SFP transceiver 1.25 Gbps 1310nm SMF

SKU CH-AP5H-79N3A MPN J4859C-5PK

Pack of five 1.25 Gbps SFP transceivers for single-mode fibre at 1310 nm wavelength

  • Product typeTransceiver
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • Network cablingSMF
  • Optical wavelength1310 nm
  • Transfer speed1.25 Gbit/s
  • Temperature range0° ~ 70 °C
  • 25 Gbps transfer rate for fast network links
  • 1310 nm wavelength on single-mode fibre for long reach
  • IEEE 802.3 compliant for broad switch compatibility
  • Operating temperature 0 °C to 70 °C for rack environments
  • Five-module pack simplifies multi-port deployments

Axiom 1.25 Gbps SFP transceiver

The Axiom J4859C-5PK is a small form-factor pluggable transceiver delivering 1.25 Gbps over single-mode fibre. It targets network administrators upgrading or expanding enterprise switching infrastructure with standards-based 1310 nm optics.

Hot-plug installation in standard SFP cages

The module inserts directly into any compliant SFP port without tools or configuration. Alignment keys prevent incorrect orientation, and the latch releases with a simple pull. Dust caps must stay fitted until the fibre patch cord is ready, otherwise the optical interface can collect contaminants that degrade link budget.

Continuous operation from 0 °C to 70 °C

Rated for the full commercial temperature range, the transceiver maintains specified optical power and receiver sensitivity during sustained traffic loads. No performance derating occurs at the upper limit, so rack-mounted switches in warm aisles remain within design margins without additional airflow provisions.

How it compares

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

Price $188.99
Pricier than about 59% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameAxiom
Product typeTransceiver
Performance
Transfer speed1.25 Gbit/s
Connectivity
Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Network cablingSMF
Optical wavelength1310 nm
Size & build
Shipping weight0.09 kg
Package size1425 × 340 × 318 mm
Environment & compliance
Temperature range0° ~ 70 °C

Questions about this item

How can I verify the transceiver is operating correctly after installation?

Confirm the link establishes at 1.25 Gbps on the host port and that the module temperature stays within 0° ~ 70° C during operation.

What is included in the J4859C-5PK pack and what must be purchased separately?

The pack contains five Axiom SFP transceiver modules; compatible SMF patch cables with LC connectors are not included and must be sourced separately.

Which version or capacity of this transceiver should I choose for a 1.25 Gbps single-mode link?

The J4859C-5PK is a 1310 nm, 1.25 Gbps SMF module supplied as a five-pack, matching that exact speed and fibre type.

More in SFP & SFP+ Transceiver Modules

Similar items