NeoPhotonics PT7230-41-1W 1.25G 1310nm 10km SFP

The NeoPhotonics PT7230-41-1W is a hot-pluggable SFP optical transceiver module designed for 1.25 Gbps Gigabit Ethernet and compatible multi-rate applications. It operates at a nominal wavelength of 1310 nm using a Fabry-Perot (FP) laser transmitter and a PIN photodiode receiver. The module supports reliable data transmission up to 10 km over single-mode fiber (ITU-T G.652) and complies with the SFP Multi-Source Agreement (MSA), IEEE 802.3z 1000BASE-LX standard, and SFF-8472 digital diagnostic specifications.This transceiver supports data rates from 1.0625 Gbps to 1.25 Gbps, making it suitable for 1000BASE-LX Gigabit Ethernet links as well as 1G Fibre Channel applications where applicable. It features a duplex LC optical connector and is intended for use with single-mode fiber (SMF). The electrical interface consists of a 20-pin SFP connector with differential CML inputs and outputs. The module operates from a single +3.3 V power supply with low power dissipation, typically below 1 W.
Digital diagnostic monitoring (DDM/DOM) functions are implemented via the two-wire I2C serial interface. This enables real-time monitoring and reporting of critical parameters including transmitted optical power, received optical power, laser bias current, supply voltage, and module temperature. Programmable warning and alarm thresholds facilitate proactive performance monitoring and fault detection. Additional features include transmitter disable (TX_DISABLE) and loss-of-signal (LOS) indication.
Optical performance specifications include average transmitter output power typically from -9 dBm to -3 dBm and receiver sensitivity of -24 dBm or better, providing a sufficient link budget for 10 km reach on single-mode fiber with adequate system margin. The design meets IEEE 802.3z requirements for jitter tolerance, extinction ratio, and eye mask compliance. The PT7230-41-1W is classified as a Class 1 laser product and complies with RoHS and EMC standards.
The transceiver is compatible with a wide range of SFP-enabled switches, routers, and network equipment from various vendors. It is well-suited for enterprise backbones, campus networks, metropolitan area networks, and FTTx applications requiring stable 10 km single-mode fiber connectivity.
Installation is simplified by the hot-pluggable SFP form factor, allowing insertion or removal without powering down the host equipment. The module supports commercial operating temperatures from 0°C to +70°C and requires minimal airflow for thermal management. Proper cleaning and inspection of the duplex LC connectors are essential to prevent contamination and maintain optimal link performance.
During operation, the PT7230-41-1W performs automatic rate detection and link negotiation where supported by the host device and provides calibrated digital diagnostic data for accurate reporting. Recommended fiber patch cables are duplex single-mode LC-to-LC with low insertion loss. The module integrates seamlessly with host management systems through standard SNMP or CLI interfaces for remote monitoring of optical parameters and link status.
This 1.25 Gbps SFP transceiver offers a reliable, cost-effective, and standards-compliant solution for deploying or upgrading Gigabit Ethernet optical links over 10 km single-mode fiber.