NeoPhotonics PTB3370-553CW-LC/PC(+) 1000BASE-BX10 BiDi SFP

The NeoPhotonics PTB3370-553CW-LC/PC(+) is a hot-pluggable Bi-Directional (BiDi) SFP optical transceiver module designed for Gigabit Ethernet applications over a single strand of single-mode fiber. It utilizes WDM technology with a 1310 nm Fabry-Perot (FP) laser transmitter and a 1490 nm InGaAs PIN photodiode receiver. The module supports data rates up to 1.25 Gbps and provides reliable transmission distances up to 10 km. It complies with the SFP Multi-Source Agreement (MSA), SFF-8472 digital diagnostic specifications, and IEEE 802.3ah 1000BASE-BX10 standard.This transceiver enables bidirectional communication over one single-mode fiber (SMF, ITU-T G.652), optimizing fiber utilization in access networks and FTTx deployments. It features a simplex LC optical connector. The electrical interface consists of a 20-pin SFP connector with differential CML signals. 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 support proactive fault detection and performance management. 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 (1310 nm TX) and receiver sensitivity of -24 dBm or better (1490 nm RX), providing a sufficient link budget for 10 km reach on single-mode fiber with adequate margin. The design meets IEEE 802.3z/802.3ah requirements for jitter tolerance, extinction ratio, and eye mask compliance. The PTB3370-553CW-LC/PC(+) 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 supporting BiDi Gigabit Ethernet ports. It is well-suited for point-to-point links in enterprise networks, campus backbones, metropolitan area networks, and fiber-to-the-premises (FTTx) applications where single-fiber deployment is required to reduce cabling costs.
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 simplex LC connector are essential to prevent contamination and maintain optimal link performance.
During operation, the PTB3370-553CW-LC/PC(+) performs automatic rate detection where supported by the host device and provides calibrated digital diagnostic data for accurate reporting. Recommended connections use single-mode simplex LC patch cords. The module integrates seamlessly with host management systems through standard SNMP or CLI interfaces for remote monitoring of optical parameters and link status.
This BiDi SFP transceiver offers a reliable, cost-effective solution for doubling fiber capacity in existing single-mode infrastructure or deploying new Gigabit Ethernet links with minimal fiber resources while maintaining full standards compliance.