FTLX8571D3BCL-C Amphenol ProLabs FTLX8571D3BCL-C 10GBase-SR SFP+ Transceiver Module

How it fits in your network

Top-of-rack to aggregation
For short-reach 10 GbE uplinks inside a row, the FTLX8571D3BCL-C is a cost-effective drop-in: simply insert it into SFP+ ports on your top-of-rack switches and connect OM3/OM4 MMF to aggregation or spine switches up to 300 m. Hot-pluggability keeps maintenance windows short.

Fibre Channel SANs
With support for 8G/10G Fibre Channel, it’s a practical optic for directors and storage switches, enabling resilient, low-latency SAN fabrics within data halls, plus easy monitoring via DOM to keep an eye on signal margins.

Enterprise campus & access
Use it for high-bandwidth interconnects between IDFs and MDFs, distribution to core, or server NIC uplinks—anywhere short-reach 10 GbE is required over installed MMF. Metal housing and strong ESD immunity help withstand real-world handling.

Mobile fronthaul (CPRI/OBSAI)
In mobile access networks, the module supports short-reach fronthaul links in controlled environments, benefiting from MMF cabling and standardized SFP+ management.

Design & interoperability details

• Standards alignment: Conformance to SFF-8432 (SFP+ electrical/mechanical) and SFF-8472 (DDM/DOM) ensures multi-vendor interoperability and access to diagnostics directly over the 2-wire interface.

• Electrical interface: 3.3 V supply, typical current up to ~303 mA; CML AC-coupled differential data I/O (TD±, RD±) with 100 Ω differential impedance, per SFP+ host designs.

• Control/status pins: TX_DISABLE, TX_FAULT, LOS, SDA/SCL, MOD_ABS follow SFP+ MSA behavior, including internal pull-ups/pull-downs and host-side pull-up recommendations (4.7–10 kΩ). This simplifies integration on standard SFP+ cages/cards.

• Optical performance: The VCSEL source provides the needed OMA and extinction ratio to meet IEEE 802.3ae SR mask; the PIN receiver meets sensitivity targets at BER 1E-12 using PRBS 2³¹−1 at ~10.31 Gb/s.

• Mechanical fit: Conforms to SFP+ MSA outline; the drawing (datasheet page with mechanical specification) shows a reference body length around 56.5 mm, ensuring compatibility with standard cages and heat-sink/airflow designs.

Reliability & compliance

The product is RoHS compliant and lead-free, with a metal housing to reduce EMI and “excellent ESD protection,” aiding field reliability and regulatory compliance in electrically noisy racks. The module is also TAA compliant, suitable for government procurements requiring U.S.-made or designated-country end products.

Applications

• Data center switching: 10 GbE server uplinks, ToR/leaf to aggregation/spine, VM migration networks, and storage back-end links up to 300 m on OM3/OM4.

• Enterprise core/distribution: Short-reach campus interconnects, MDF-IDF risers using installed MMF plant with LC connectors.

• Fibre Channel SANs: 8G/10G FC links between storage arrays, directors, and top-of-rack converged switches; ideal for short in-row or cross-row SAN connectivity.

• Mobile fronthaul: CPRI/OBSAI short-distance connectivity in controlled environments, where 10 Gb/s optical links over MMF are required.

Pin highlights (for host designers)

The SFP+ 20-pin edge connector exposes all standard management and data signals. Of note:

• TX_DISABLE (input with internal pull-up), TX_FAULT and LOS (open collector/drain—use 4.7–10 kΩ host pull-ups), and MOD_ABS (asserts high when the module is absent) behave per the MSA, simplifying board layouts across different optics. Ensure no host pin exceeds module Vcc + 0.5 V.

Mechanical reference

Per the SFP MSA, the module envelope fits standard cages and latch mechanisms. The mechanical drawing in the datasheet shows a typical body length reference of ~56.5 mm, making it drop-in compatible with common SFP+ caged heatsink assemblies and faceplates. For thermal planning, budget up to ~1 W per port and ensure adequate airflow per switch/NIC vendor guidelines.

Monitoring & operations

With DOM/DDM, network operators can poll the module for:

• Case temperature (0–70 °C operating)

• Supply voltage

• Tx optical power and Rx optical power

• Alarm/warning thresholds

This enables proactive maintenance (e.g., trend Rx power to detect connector contamination or fiber degradation), faster root-cause analysis, and smarter optics sparing strategies. The EEPROM memory map includes user-writable fields and real-time diagnostic areas as defined by SFF-8472.

Best-practice deployment tips

• Verify MMF type and reach: For full 300 m reach, ensure OM3 or better multimode fiber and clean LC connectors; legacy OM2 may reduce distance. (General guidance; follow site fiber specs.)

• Respect Rx overload: Input powers above −1 dBm can damage the receiver—add patch attenuation if connecting to very short, high-power links.

• Enable DOM polling: Integrate optics telemetry into your NMS to set alarms on high temperature or low Rx power conditions for predictive maintenance.

What’s included

• 1× FTLX8571D3BCL-C 10GBase-SR SFP+ transceiver with programmed compatibility and unique serialization

• Backed by ProLabs quality assurance; each unit is application and data-traffic tested to ensure it initializes and performs identically to the equivalent Finisar® transceiver.

Why choose this part

• Interoperability you can trust: Compliant to key SFP+ standards (SFF-8432/SFF-8472) and validated for identical initialization/operation to the Finisar® FTLX8571D3BCL, reducing multi-vendor risk.

• Operational visibility: DOM provides the visibility needed to keep 10 GbE/FC links healthy without guesswork.

• Procurement-friendly: TAA compliant, RoHS, and lead-free for public sector and environmentally responsible deployments.