XFP LR Transceiver

The XFP LR transceiver is the fully specified XFP line in this catalogue, and it is the product this site leads with. Its published specification sheet states a 10G rate, a 1310nm wavelength, a 20km reach over single-mode fiber, a rate range of 9.95 to 11.1Gb/s, a duplex LC connector, power consumption below 2.5W and an operating temperature range of 0 to 70 degrees Celsius. The published model is BT-XFP-LR. The applications named on the product page are SDH STM I-64.1, 10GBASE-LR and LW, and 10G Fibre Channel. Those figures belong to this product alone and are not shared with any other transceiver on this site.

The XFP form factor is an older 10G format than SFP+, and that age is part of its value. A large installed base of routers, switches and transport equipment still uses XFP slots, and those slots cannot take an SFP+ module. For an operator maintaining such equipment, the question is not which format is newest but which format fits the slot, and the XFP LR answers that question for single-mode 10G links up to 20km. The guide comparing XFP and SFP+ on this site explains the format difference in full, including why the two formats are not interchangeable.

The 20km reach over single-mode fiber at 1310nm is the classic long-reach 10G combination. It covers campus backbones, metro links between sites, and the interconnection of buildings across a city, where multimode fiber cannot reach and where a shorter-reach module would fail. The 1310nm wavelength is the standard single-mode window for this distance, and the duplex LC connector is the standard connector for the format, which keeps the fiber plant and the patching simple.

The rate range of 9.95 to 11.1Gb/s is worth noting because it covers more than one 10G application. Ethernet at 10G runs at one rate within that range, SDH and SONET transport at another, and Fibre Channel at a third, and the product page names all three application families. A buyer should state the application during the inquiry — Ethernet, SDH or Fibre Channel — so the right configuration can be confirmed, because a module that covers several rates still needs to be set for the network it will run in.

Power consumption below 2.5W and an operating range of 0 to 70 degrees Celsius are modest figures for a 10G module, and they reflect the mature design of the XFP format. A rack of XFP modules draws less power per port than a rack of newer, denser modules, which can matter in an older installation where the cooling budget was set years ago. The temperature range covers ordinary indoor installations, and a buyer planning an installation outside that range should raise it during the inquiry.

On certification, the product page for this model states RoHS compliant. That statement is reported here as a product-page statement, not as a certificate reproduced on this site. Certificates are available upon request. No prices, minimum order quantities, delivery times or stock figures are stated for this model, because none have been published. Before ordering, confirm quantity, price and delivery time during the inquiry, together with the application — Ethernet, SDH or Fibre Channel — that the link will carry.