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Zyxel SFP25G-LR 25GbE SFP28 Single-Mode Transceiver, 10km

Brand:
Zyxel
Zyxel SFP25G-LR 25GbE SFP28 transceiver, angled front view
Zyxel SFP25G-LR 25GbE SFP28 Single-Mode Transceiver, 10km
€104.17 inc. VAT
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SFP25G-LR-ZZ0101F
€87.54
€104.17 inc. VAT
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Product Code
04:537989
EAN Code
4718937649525
Manufacturer
Zyxel
Quick Specs
Data rate
25GbE
Host form factor
SFP28
Fibre connector
Duplex LC
Maximum reach
10km, subject to optical path
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Zyxel SFP25G-LR 25GbE SFP28 Transceiver

25GbESFP28Duplex LC10km, subject to optical path

The Zyxel SFP25G-LR (SKU SFP25G-LR-ZZ0101F) is a single 25GbE SFP28 optical transceiver for a supported 25G fibre link. It uses duplex LC single-mode fibre at 1310nm, with a maximum transmission distance of 10km subject to the optical path and matching endpoint equipment. It is not a complete two-end link kit, a network card or a media converter.

Best For: For network installations that need one 25GbE SFP28 optical module and have a supported 25G host port at each end, suitable duplex single-mode LC fibre and compatible 25G LR optics at the remote endpoint.
Before you order: Check the exact host model, 25G-enabled port, firmware and optic acceptance before purchase; the similar SFP/SFP+ shape does not establish 1G or 10G fallback. A suitable duplex single-mode LC fibre run and compatible 25G LR optics at the far end are required. Only one module is included; a second is needed only if no suitable remote optic is already available. Maximum 10km depends on optical path loss, connectors, splices and matching optical levels; cable and remote optic are not listed as included.

What's in the Box

  • One Zyxel SFP25G-LR 25GbE optical module

What It Means in Practice

  • Use a supported 25G-enabled SFP28 host port and suitable duplex single-mode fibre with LC terminations; the remote endpoint needs compatible 25G LR optics.
  • The 10km figure is a maximum transmission distance, subject to optical path loss, connectors, splices and matching optical levels; it is not included cable length or a guaranteed application rate.
  • Where host firmware supports DDMI, the host can expose module temperature, received and transmitted optical power, bias current, supply voltage and threshold alarms. The module has no standalone web interface or software dashboard.
  • The host cage supplies the module within 3.135–3.465V; verify host power and thermal allowance for its maximum 520mA current and 1.75W consumption.

What Will Not Work

  • Not a 100G QSFP28 module; no 1G or 10G fallback is established by the similar SFP/SFP+ shape.
  • Not a standalone network card, switch, media converter, Internet, routing or Wi-Fi device.
  • Not for multimode SR, MPO12, BiDi/single-strand fibre or copper DAC links.
  • A suitable duplex single-mode LC fibre path and compatible 25G LR optics at both ends are required; only one module is included, and a remote module is not included if needed.
  • No universal Zyxel, third-party or lower-speed host acceptance is guaranteed; check exact model, port and firmware. Removing the module interrupts the physical link; zero-downtime replacement is not guaranteed.

Key Features

 
25GbE SFP28
For a supported 25G-enabled SFP28 host port; it is not a 100G QSFP28 optic.
 
Duplex LC, single-mode
Uses a duplex single-mode LC fibre path and matching 25G LR optics at the remote end.
 
Up to 10km
Maximum distance per the exact model datasheet, subject to the optical path and matching levels.
 
DDMI monitoring
Host firmware may expose optical and operating readings with threshold alarms.

Technical Specifications

Product type25GbE SFP28 optical transceiver
ManufacturerZyxel
ModelSFP25G-LR
Manufacturer SKUSFP25G-LR-ZZ0101F
EAN4718937649525
Pack quantitySingle pack; one module
ConnectorDuplex LC
Fibre typeSingle-mode
Wavelength1310nm
Maximum transmission distance10km, subject to optical path limits
Transmit power range-7 to +2dBm
Receive power range-14 to +2dBm
Host supply voltage3.135–3.465V
Maximum current520mA
Maximum power consumption1.75W
Dimensions (W × D × H)57.4 × 14.55 × 11.9mm
Weight22g
Operating temperature0°C to 70°C
Storage temperature-40°C to 85°C
MTBF4,936,565 hours at 25°C; statistical reliability figure, not a warranty or promised lifetime
DiagnosticsDDMI; readings and threshold alarms depend on host firmware support
Host compatibilityManufacturer lists CX4800-56F; current datasheet also lists CX3800 Series with Q4 2026 availability footnote. Verify exact host, 25G-enabled port, firmware and optic acceptance.
Hot-plug designHot-pluggable family design; use the compatible host's supported procedure. Removing the module interrupts the physical link.
Standards and safetyManufacturer describes the transceiver family as industry/MSA compliant; Class 1 laser, 21 CFR 1040.10/1040.11
Power supplySupplied by a compatible host cage; no external adapter or PoE injector required or supplied

Frequently Asked Questions

What else is needed for a link?
A supported 25G-enabled SFP28 port at each end, suitable duplex single-mode fibre with matching LC terminations, and compatible 25G LR optics at the remote endpoint. Existing suitable remote optics can be used.
Does the package include two modules or fibre?
No. It is a single pack containing one module. Fibre cable and a second module, if needed, are not listed as included.
Will it work in an SFP+ port or at 10GbE?
That is not established. Check the exact host model, 25G-enabled port, firmware and optic acceptance; similar connector shape does not guarantee lower-speed operation.
How far can it transmit?
The exact-model datasheet states a maximum of 10km. Actual link suitability depends on optical path loss, connectors, splices and matching optical levels.
Singular Expert Insight

Its exact 25G LR specification combines duplex LC single-mode optics, 1310nm wavelength and a stated maximum 10km reach, while DDMI readings are available when supported by host firmware.

Buyer’s Guide

✓ Buy it if For network installations that need one 25GbE SFP28 optical module and have a supported 25G host port at each end, suitable duplex single-mode LC fibre and compatible 25G LR optics at the remote endpoint.
✕ Skip it if Check the exact host model, 25G-enabled port, firmware and optic acceptance before purchase; the similar SFP/SFP+ shape does not establish 1G or 10G fallback. A suitable duplex single-mode LC fibre run and compatible 25G LR optics at the far end are required. Only one module is included; a second is needed only if no suitable remote optic is already available. Maximum 10km depends on optical path loss, connectors, splices and matching optical levels; cable and remote optic are not listed as included.
→ Also consider If the link uses 100G QSFP28, multimode SR optics, single-strand BiDi or a copper DAC, choose the corresponding link technology instead; this module does not provide those interfaces.

Features - Zyxel - SFP25G-LR-ZZ0101F

Port Speed
  • 25 Gbps
More Details
Product Code
04:537989
EAN Code
4718937649525
Manufacturer
Zyxel
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