SFP NIC 1000Base-ZX, 1550nm Singlemode, LC (80km)

Broadcom/Avago AFCT-57V6USZ 1000Base-ZX SFP Transceiver

The AFCT-57V6USZ is a high-performance, cost-effective SFP (Small Form-factor Pluggable) optical transceiver module designed for 1000Base-ZX Gigabit Ethernet and Fiber Channel applications. Operating at a nominal wavelength of 1550nm, this module is specifically engineered for long-reach data communications over single-mode fiber (SMF), capable of spanning distances up to 70km–80km.

Core Technical Features:

• Extreme Long-Range Connectivity: Compliant with the 1000Base-ZX standard, providing the optical budget necessary for regional backhaul and metro area network (MAN) spans.
• 1550nm DFB Laser: Utilizes a Distributed Feedback (DFB) laser transmitter to minimize chromatic dispersion, ensuring signal integrity over ultra-long distances.
• Digital Optical Monitoring (DOM/DDM): Supports real-time diagnostic monitoring of internal parameters such as transceiver temperature, laser bias current, transmitted optical power, and received optical power.
• Hot-Pluggable Efficiency: Designed for the industry-standard SFP footprint, allowing for "live" installation or replacement without disrupting the host system's power.
• Carrier-Grade Reliability: Fully compliant with the SFP Multi-Source Agreement (MSA) and SFF-8472 standards for seamless interoperability across diverse vendor platforms.

Technical Specifications:

• Model/Part Number: AFCT-57V6USZ
• Data Rate: 1.25 Gbps (Gigabit Ethernet)
• Wavelength: 1550nm
• Max Cable Distance: 70km (standard) / up to 80km (depending on fiber quality)
• Fiber Type: Single-Mode Fiber (SMF)
• Connector Type: Duplex LC
• Operating Voltage: 3.3V
• Operating Temperature: 0°C to 70°C (Commercial Grade)
• Compliance: RoHS Compliant, Class 1 Laser Safety

Ideal Use Cases:

• ISP Regional Backhaul: Connecting remote central offices or OLT sites to the core network across significant geographic distances.
• Metro Area Networks (MAN): High-speed interconnects between data centers or corporate campuses located in different parts of a city.
• Utility & Transport Infrastructure: Providing reliable long-distance monitoring and data links for railways, power grids, and municipal networks.

Professional Note: Because the AFCT-57V6USZ is a "ZX" (high-power) module, it is critical to use optical attenuators (typically 10dB) if testing or deploying over short fiber runs (less than 20km). Failure to attenuate the signal on short links may saturate or permanently damage the sensitive PIN/APD receiver.