Q: What is the chassis compatibility of HW-OPT-25G-SFP28-10KM across Huawei platforms, and does it support 10GE fallback and manual FEC configuration?

Programmed with genuine Huawei OEM vendor EEPROM coding, the HW-OPT-25G-SFP28-10KM delivers seamless plug-and-play capability across Huawei CloudEngine enterprise/DC switches (CE6865, CE6881, CE8850, CE9860), NetEngine routers (NetEngine 8000 F1A/M1A, NE40E series), and 5G BBU/RRU wireless access systems. For backward compatibility, the dual-rate physical layer allows down-clocking to 10.3125 Gbps (10GBASE-LR equivalent) via the VRP command `speed 10000` or `port-mode 10ge` when paired with compatible 10G transceivers. Regarding Forward Error Correction: in 25GE operation, the host port typically defaults to IEEE 802.3by Clause 108 RS-FEC (528,514) for carrier-grade BER over 10 km. If interconnecting with legacy or third-party equipment, the module supports configuring FEC to Base-R (Clause 74 Fire-Code) or FEC Bypass (No-FEC), resolving cross-vendor framing and link-down issues caused by FEC protocol mismatches.

Q: Engineered for an industrial temperature range (-40°C to +85°C), how does this SFP28-25G-LR ensure reliability in 5G outdoor fronthaul and harsh environments?

The HW-OPT-25G-SFP28-10KM features a sealed zinc-diecast casing and industrial-grade silicon, qualified for an operating case temperature of -40°C to +85°C (I-Temp). It is built to withstand extreme thermal fluctuations in unconditioned pole-mount 5G AAUs, outdoor integrated power cabinets, and remote cell sites. The 1310nm DFB laser utilizes thermal compensation algorithms to restrain center wavelength drift strictly within the 1295–1325 nm window across the full thermal envelope, preventing chromatic dispersion degradation. The unit meets stringent Telcordia GR-468-CORE reliability requirements, offering enhanced EMC/EMI shielding, ESD protection (4kV contact, 8kV air discharge), and high shock/vibration tolerance. With an MTBF exceeding 1,000,000 hours and an AFR under 0.08%, it reliably eliminates unprompted link flaps in severe outdoor microclimates.

Question 1

What are the core electro-optical specifications, optical power budget, and power consumption of the Huawei 25G SFP28 10km (HW-OPT-25G-SFP28-10KM)?

Accepted Answer

Designated as SFP28-25G-LR (Duplex LC connector with blue pull-tab), this module complies with IEEE 802.3cc 25GBASE-LR and SFF-8402 MSA standards. It integrates a 1310nm uncooled DFB transmitter and a high-sensitivity PIN photo-detector, delivering reliable 10 km transmission over standard G.652 Single-Mode Fiber (SMF). Operating at a continuous line rate of 25.78125 Gbps (also compatible with 24.33 Gbps CPRI Option 10 and eCPRI), it exhibits an optical launch power of -7.0 dBm to +2.0 dBm, a receiver sensitivity better than -10.3 dBm (under RS-FEC at BER 5×10⁻⁵), and a receiver overload threshold of +2.0 dBm, ensuring an optical link budget margin over 3.3 dB. Powered by a standard +3.3V DC rail, maximum power consumption is strictly throttled below 1.2 W (<1.0 W typical) across the full temperature range. It fully supports SFF-8472 compliant digital optical monitoring (DOM/DDM) for real-time telemetry of Tx bias current, Tx/Rx optical power, supply voltage, and internal core temperature.

Question 2

What is the chassis compatibility of HW-OPT-25G-SFP28-10KM across Huawei platforms, and does it support 10GE fallback and manual FEC configuration?

Accepted Answer

Programmed with genuine Huawei OEM vendor EEPROM coding, the HW-OPT-25G-SFP28-10KM delivers seamless plug-and-play capability across Huawei CloudEngine enterprise/DC switches (CE6865, CE6881, CE8850, CE9860), NetEngine routers (NetEngine 8000 F1A/M1A, NE40E series), and 5G BBU/RRU wireless access systems. For backward compatibility, the dual-rate physical layer allows down-clocking to 10.3125 Gbps (10GBASE-LR equivalent) via the VRP command `speed 10000` or `port-mode 10ge` when paired with compatible 10G transceivers. Regarding Forward Error Correction: in 25GE operation, the host port typically defaults to IEEE 802.3by Clause 108 RS-FEC (528,514) for carrier-grade BER over 10 km. If interconnecting with legacy or third-party equipment, the module supports configuring FEC to Base-R (Clause 74 Fire-Code) or FEC Bypass (No-FEC), resolving cross-vendor framing and link-down issues caused by FEC protocol mismatches.

Question 3

Engineered for an industrial temperature range (-40°C to +85°C), how does this SFP28-25G-LR ensure reliability in 5G outdoor fronthaul and harsh environments?

Accepted Answer

The HW-OPT-25G-SFP28-10KM features a sealed zinc-diecast casing and industrial-grade silicon, qualified for an operating case temperature of -40°C to +85°C (I-Temp). It is built to withstand extreme thermal fluctuations in unconditioned pole-mount 5G AAUs, outdoor integrated power cabinets, and remote cell sites. The 1310nm DFB laser utilizes thermal compensation algorithms to restrain center wavelength drift strictly within the 1295–1325 nm window across the full thermal envelope, preventing chromatic dispersion degradation. The unit meets stringent Telcordia GR-468-CORE reliability requirements, offering enhanced EMC/EMI shielding, ESD protection (4kV contact, 8kV air discharge), and high shock/vibration tolerance. With an MTBF exceeding 1,000,000 hours and an AFR under 0.08%, it reliably eliminates unprompted link flaps in severe outdoor microclimates.

Key specifications	Value
Physical Form Factor	SFP28
Data Rate	25.78 Gbps
Central Wavelength	1310 nm
Maximum Distance	10 km
Fiber Type	Single-Mode Fiber (SMF) (SMF)
Optical Connector	Duplex LC (blue pull tab)
Typical Power Consumption	< 1.2 W
Operating Temperature	-40°C ~ +85°C (industrial-grade temperature tolerance)
Digital Diagnostic Monitoring	Supports DDM compliant with SFF-8472

Huawei 25G SFP28 1310nm 10km Single-Mode Optical Transceiver (SFP28-25G-LR)

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

5G mobile telecom eCPRI fronthaul transport

Datacenter Top-of-Rack (TOR) server aggregation

Enterprise optical campus backbone distribution

Frequently asked questions

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