019-078-046 EMC QSFP 40Gbase SR4 70C 850nm Optical Transceiver Module

EMC 019-078-046 QSFP Optical Transceiver Module

The EMC 019-078-046 QSFP 40GBASE-SR4 70°C 850nm Optical Transceiver Module is a high-performance data center connectivity component engineered to support ultra-fast 40 Gigabit Ethernet (40GbE) transmission over multimode fiber infrastructure. Designed for enterprise-grade switching environments, storage networking systems, and high-density cloud architectures, this optical transceiver delivers reliable short-range optical communication with optimized energy efficiency and thermal resilience up to 70°C operating conditions.

As part of the QSFP (Quad Small Form-Factor Pluggable) family, this module integrates four independent transmit and receive channels, enabling aggregated high-speed data transfer suitable for modern backbone networks. Its SR4 (Short Range 4-lane) configuration utilizes 850nm VCSEL (Vertical-Cavity Surface-Emitting Laser) technology to ensure stable signal transmission across OM3 and OM4 multimode fiber cabling.

EMC 019-078-046 Optical Transceiver

QSFP+ Form Factor Design

The QSFP+ architecture used in the EMC 019-078-046 module supports compact, high-density port deployment in networking hardware. This small form factor allows data centers to maximize port availability while maintaining efficient airflow and reduced power consumption per port. The module’s integrated design consolidates four electrical lanes into a single optical interface, significantly reducing hardware footprint in large-scale switching environments.

40GBASE-SR4 Multichannel Transmission

The 40GBASE-SR4 standard defines a parallel optical transmission method using four transmit and four receive fibers. Each lane operates at approximately 10Gbps, combining to deliver an aggregate throughput of 40Gbps. This architecture ensures low-latency communication, making the EMC 019-078-046 suitable for applications requiring high-speed packet forwarding and deterministic network performance.

850nm VCSEL Optical Technology

The module utilizes 850nm wavelength VCSEL technology optimized for multimode fiber transmission. VCSEL lasers provide high modulation speeds, low power consumption, and enhanced reliability compared to traditional edge-emitting lasers. The 850nm spectrum is specifically selected for short-range data center interconnects, offering efficient signal propagation across OM3 and OM4 fiber types.

Performance Characteristics

Data Throughput and Bandwidth Optimization

The EMC 019-078-046 transceiver supports 40Gbps aggregate bandwidth, making it suitable for backbone switching, aggregation layers, and server-to-switch interconnects. The parallel lane structure reduces bottlenecks in high-traffic environments, ensuring consistent data throughput under sustained workloads. This performance level is critical for virtualization clusters, high-frequency trading systems, and cloud data centers.

Low Latency Optical Communication

Latency optimization is a key advantage of the SR4 architecture. By utilizing parallel optical lanes, the module minimizes serialization delays and ensures rapid signal propagation between connected endpoints. This characteristic is essential in latency-sensitive applications such as distributed computing, real-time analytics, and storage area networks (SANs).

Energy Efficiency

The EMC 019-078-046 is engineered for low power consumption relative to its bandwidth output. Its energy-efficient VCSEL design reduces overall system thermal load, contributing to improved cooling efficiency in high-density rack deployments. The module is rated for operation up to 70°C, ensuring stable performance in thermally challenging environments such as edge data centers and compact server rooms.

Physical and Mechanical Specifications

Compact Hot-Pluggable

The hot-pluggable QSFP+ interface allows for seamless installation and removal without powering down networking equipment. This feature supports rapid maintenance, upgrades, and scalability within live network environments, minimizing downtime and operational disruption.

Robust Connector Interface

The optical interface is designed for MPO/MTP multi-fiber connectors, which provide reliable multi-lane optical alignment. This connector type ensures minimal insertion loss and high signal integrity across short-range multimode fiber links, contributing to stable network performance.

Durability in High-Density Deployments

The module is built to withstand continuous operation in densely packed switching systems. Its mechanical housing is optimized for thermal dissipation and electromagnetic shielding, ensuring consistent signal quality even in environments with high port utilization and airflow constraints.

Compatibility and Integration in Network Systems

Data Center Switch Compatibility

The EMC 019-078-046 QSFP 40GBASE-SR4 module is widely used in enterprise switching platforms, especially in top-of-rack (ToR), end-of-row (EoR), and spine-leaf architectures. It enables high-speed uplinks between switches and aggregation layers, supporting scalable network expansion without performance degradation.

Server and Storage Connectivity

In storage networking environments, the transceiver facilitates high-speed connectivity between servers, storage arrays, and SAN switches. Its 40G bandwidth ensures rapid data access and transfer rates, which is critical for virtualization workloads, database systems, and backup infrastructure.

Interoperability with Multimode Fiber Infrastructure

Designed specifically for OM3 and OM4 multimode fiber cables, the module ensures optimal performance across short-distance optical links. OM4 fiber extends transmission distances compared to OM3, making it suitable for larger data center layouts while maintaining signal integrity.

Compliance with Industry Standards

The transceiver adheres to IEEE 802.3ba standards for 40 Gigabit Ethernet transmission, ensuring compatibility with a broad range of networking equipment. This compliance guarantees interoperability and stable performance across certified networking ecosystems.

Signal Integrity and Error Reduction

Advanced signal conditioning techniques within the module reduce bit error rates and enhance transmission accuracy. By maintaining precise optical alignment and modulation stability, the transceiver ensures reliable data delivery across all four lanes of transmission.

Use Cases in Modern Networking Architectures

Cloud Data Center Infrastructure

In cloud environments, the EMC 019-078-046 plays a critical role in enabling high-speed interconnects between compute nodes and distributed storage systems. Its low-latency performance supports dynamic scaling and workload balancing across virtualized infrastructures.

Enterprise Core and Aggregation Networks

Enterprise networks utilize this module for core and aggregation layer connectivity, where high bandwidth and reliability are essential. It supports traffic consolidation from multiple access layers into centralized switching fabrics.

High-Performance Computing Clusters

HPC environments benefit from the module’s parallel optical architecture, which enables rapid data exchange between compute nodes. This is particularly important for scientific simulations, AI training workloads, and parallel processing systems.

Enterprise Networking Advantages

Scalability in High-Density Networks

The compact QSFP+ design allows multiple modules to be deployed in a single switch chassis, supporting scalable network growth without requiring additional physical infrastructure.

High Availability Networking

The reliability of the EMC 019-078-046 ensures continuous network uptime in high-availability environments. Its redundant path compatibility allows seamless failover configurations in enterprise architectures.

Optimized Data Flow

The module supports efficient traffic distribution across network layers, reducing congestion and improving overall system performance in large-scale deployments.