Question 1

What are the core electro-optical specifications and link budget metrics of the ZTE 1.25G SFP 10km (SM-10KM-1310-1.25G-C) transceiver?

Accepted Answer

Compliant with SFP MSA and IEEE 802.3z 1000BASE-LX/LH standards, this module operates at a nominal wavelength of 1310nm using a proven FP laser transmitter and a PIN photodiode receiver. It operates from a single 3.3V DC power rail with typical power consumption under 0.8W. Key optical parameters include an optical transmit power of -9.0 to -3.0 dBm, receiver sensitivity better than -20.0 dBm, and an optical overload threshold of -3.0 dBm, delivering an 11 dB minimum link budget for reliable 10km reach over G.652 standard single-mode fiber (SMF 9/125µm). It fully integrates SFF-8472 Digital Diagnostic Monitoring (DDM/DOM), providing real-time telemetry on TX/RX optical power, laser bias current, internal supply voltage, and operating temperature.

Question 2

How does this 1.25G SMF SFP perform regarding system compatibility and high-density mixed insertion across ZTE and multi-vendor platforms?

Accepted Answer

The ZTE-OPT-1.25G-SFP-10KM transceiver features optimized ZTE-native EEPROM microcode, offering full plug-and-play compatibility across ZTE telecom portfolios, including ZXA10 C300/C320/C600 OLT uplink interfaces (such as GUFQ/HUTQ), ZXR10 5900E/8900E enterprise/carrier switches, and PTN 6000 transport platforms. Compliant with INF-8074i specifications, it supports robust hot-swapping with built-in inrush current limiting and ESD suppression. It allows seamless, high-density mixed deployment alongside 1000BASE-SX, 1000BASE-ZX, or SFP copper modules on the same port matrix without thermal or electromagnetic crosstalk.

Question 3

What are the thermal design capabilities and long-term reliability (MTBF) metrics of this transceiver in mission-critical environments?

Accepted Answer

Engineered for central office and climate-controlled outdoor cabinet deployments, the module operates across a standard case temperature range of 0°C to +70°C, with a storage tolerance of -40°C to +85°C and 5% to 95% non-condensing relative humidity. Its all-metal die-cast zinc housing acts as a passive heatsink, effectively conducting thermal energy away from the internal laser diode driver and TOSA/ROSA assemblies. This design eliminates hot-spot failure risks during high-density port loading. Compliant with FCC Part 15 Class B and EN 55022/CISPR 22 for EMI/EMC mitigation, it boasts a Mean Time Between Failures (MTBF) exceeding 1,000,000 hours with an annual failure rate below 0.1%.

Key specifications	Value
Physical Form Factor	SFP
Data Rate	1.25 Gbps
Central Wavelength	1310 nm
Maximum Distance	10 km
Fiber Type	Single-Mode Fiber (SMF) (SMF)
Optical Connector	Duplex LC Connector
Typical Power Consumption	< 0.8 W
Operating Temperature	0°C ~ +70°C

ZTE 1.25G SFP 1310nm 10km Single-Mode Gigabit Optical Transceiver

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Enterprise gigabit fiber uplinks

Carrier edge routing distribution

Metropolitan campus backbones

Frequently asked questions

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