The PRE-QSFP112DD-2FR4 is a high-performance 800G optical transceiver that delivers 2x400G Ethernet connectivity using IEEE 802.3cu 400GBASE-FR4 standards. Designed for use in QSFP-DD800 MSA-compliant systems, it supports transmission over single-mode fiber (SMF) up to 2km via dual LC connectors. With full compatibility with CMIS 5.0 or later and RoHS compliance, this transceiver enables scalable, efficient, and environmentally responsible high-speed networking for next-generation data center and metro applications.
PRE-QSFP112DD-2FR4
The PRE-QSFP112DD-2FR4 is an 800G QSFP-DD800 transceiver supporting 2x400GBASE-FR4 over SMF up to 2km with PAM4 modulation and LC connectors.
QSFP-DD800, 2x400G-FR4, 1310nm, 800G, 2km, SMF/LC

Description
Key Features
Applications
Documents
Description
The PRE-QSFP112DD-2FR4 is an 800G QSFP-DD800 transceiver featuring 2x400G-FR4 lanes over 1310nm wavelengths, supporting up to 2km reach on single-mode fiber (SMF) with dual LC connectors, ideal for high-capacity data center and metro connections.
Key Features
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8x100G PAM4 Modulation: Utilizes 8 lanes of 100G PAM4 modulation to achieve a total data rate of 800Gbps, enabling ultra-high bandwidth and efficient signal transmission for demanding data center workloads.
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EML Transmitters: Equipped with Electro-absorption Modulated Lasers (EMLs) for each lane, providing high-speed performance, long reach, and superior signal integrity over single-mode fiber.
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PIN Receivers: Incorporates PIN photodiode receivers for each channel, ensuring high sensitivity, low noise, and reliable optical-to-electrical conversion over extended distances.
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2km Reach: Supports transmission distances of up to 2 kilometers, making it ideal for campus, metro, and large-scale data center interconnect applications without the need for amplification.
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SMF Transmission Medium: Designed for single-mode fiber (SMF), enabling high-speed, long-distance connectivity with low attenuation and minimal dispersion.
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Dual Duplex LC/UPC Connector: Features dual LC/UPC connectors for simplified installation and compatibility with standard fiber infrastructure, supporting independent 400G channel operation.
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C-Temp Rated: Optimized for commercial temperature environments (0°C to 70°C), suitable for climate-controlled data center deployments.
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Digital Diagnostic Monitoring (DDM): Provides real-time access to key operating parameters including temperature, voltage, laser bias, and optical power levels for proactive maintenance and fault detection.
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<17W Power Consumption: Delivers high-performance 800G throughput with efficient power usage under 17 watts, supporting dense networking environments while minimizing thermal impact and energy costs.
Applications
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2x400G Ethernet: Supports two independent 400G Ethernet channels, enabling flexible deployment in dual-port high-speed networking applications and maximizing bandwidth efficiency within a single transceiver.
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IEEE Std 802.3cu 400GBASE-FR4: Compliant with the IEEE 802.3cu 400GBASE-FR4 standard, ensuring industry-aligned performance for 400G transmission over single-mode fiber up to 2 km using four optical lanes per 400G channel.
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QSFP-DD800 MSA: Built to the QSFP-DD800 Multi-Source Agreement (MSA), enabling interoperability with next-generation 800G network equipment and providing a compact, high-density optical interface.
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CMIS 5.0 or Later: Supports the Common Management Interface Specification (CMIS) version 5.0 or later, allowing seamless integration with host systems and standardized monitoring and management of module functions.
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RoHS: RoHS compliant, ensuring the product meets environmental regulations by restricting the use of hazardous materials in its manufacturing process, promoting safer and more sustainable deployment.
Documents
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