40GBASE-eSR4 QSFP+ Optical Transceiver – 850nm, 300m (OM3)/400m (OM4) MMF, MPO Connector
$346.00
Upgrade your network with our high-performance 40GBASE-eSR4 QSFP+ transceiver. Delivering reliable 40Gbps connectivity up to 300m over OM3 MMF (or 400m over OM4 MMF) via an MPO connector, this hot-pluggable module is ideal for data centers, enterprise networks, and high-performance computing applications. Features DDM/DOM support for real-time monitoring.
Achieve Robust 40Gbps Connectivity with Our QSFP-40G-eSR4 Transceiver
The MEFIBEROPTIC QSFP-40G-eSR4 is a high-performance, hot-pluggable QSFP+ optical transceiver module designed for 40 Gigabit Ethernet (40GbE) applications. Operating at an 850nm wavelength, it provides reliable data transmission over multi-mode fiber (MMF) up to 300 meters using OM3 fiber or up to 400 meters using OM4 fiber. This module is an ideal solution for short-to-medium reach interconnects in data centers, enterprise core aggregation, and high-performance computing networks.
Equipped with an MPO-12 connector, the QSFP-40G-eSR4 leverages parallel optics technology with 4 independent transmit and receive channels, each operating at 10Gbps, to achieve an aggregate bandwidth of 40Gbps. It is fully compliant with the QSFP+ MSA (Multi-Source Agreement) and IEEE 802.3ba 40GBASE-SR4 standards, ensuring broad compatibility with existing network equipment. The “eSR4” designation often indicates enhanced capabilities or interoperability within the SR4 ecosystem.
Key Features & Benefits:
- High-Speed Performance: Delivers 40Gbps data rates for demanding network applications.
- Extended Short Reach: Transmits up to 300m over OM3 MMF and 400m over OM4 MMF, offering flexibility in network design.
- Industry Standard Compliance: Adheres to QSFP+ MSA, IEEE 802.3ba (40GBASE-SR4), and SFF-8436 standards for seamless integration.
- Parallel Optics: Utilizes 4x10Gbps channels over an MPO-12 connector for efficient data transmission.
- Hot-Pluggable: Allows for easy installation and removal without powering down network equipment.
- Low Power Consumption: Designed for energy efficiency, reducing operational costs. (Specify if known, e.g., <1.5W)
- Digital Diagnostics Monitoring (DDM/DOM): Provides real-time monitoring of critical parameters such as temperature, voltage, bias current, transmit power, and receive power.
- Reliable 850nm VCSEL Technology: Employs proven Vertical-Cavity Surface-Emitting Laser (VCSEL) technology for consistent performance.
- Cost-Effective Solution: Offers an affordable upgrade path to 40GbE for MMF infrastructure.
Applications:
- Data Center Interconnects (Server-to-Switch, Switch-to-Switch)
- Enterprise Core and Distribution Layers
- High-Performance Computing (HPC) Clusters
- Storage Area Networks (SAN)
- Telecommunication Networks
- Cloud Computing Infrastructure
Technical Specifications:
- Form Factor: QSFP+
- Data Rate: 40Gbps (4 x 10Gbps)
- Wavelength: 850nm
- Fiber Type: Multi-Mode Fiber (MMF)
- Maximum Distance:
- 300m over OM3 MMF (50/125µm)
- 400m over OM4 MMF (50/125µm)
- Connector: MPO-12 (Female)
- Transmitter Type: 850nm VCSEL array
- Receiver Type: PIN photodiode array
- Operating Temperature: Commercial (0°C to 70°C) or Industrial (-40°C to 85°C) – Specify which version you offer or list options.
- Power Consumption: Typically < X.X W (e.g., <1.5W) – Specify actual value.
- DDM/DOM Support: Yes
- Compliance: QSFP+ MSA, IEEE 802.3ba (40GBASE-SR4), SFF-8436, RoHS
5. Proposed FAQ Section:
Frequently Asked Questions (FAQ) for QSFP-40G-eSR4 Transceiver:
- Q1: What is the difference between QSFP-40G-SR4 and QSFP-40G-eSR4?
- A1: Both are 40G transceivers for MMF using 850nm and MPO connectors. “eSR4” (Enhanced SR4) typically implies it meets all SR4 specifications but might offer slightly extended reach (e.g., 400m on OM4 compared to a standard SR4 which might be specified for 150m on OM4) or ensure interoperability with SR4 modules, potentially allowing connection to four 10G-SR SFP+ modules via a breakout cable. Always check specific vendor datasheets for exact capabilities.
- Q2: What type of fiber cable is required for this transceiver?
- A2: This transceiver requires multi-mode fiber (MMF) with an MPO-12 connector. For optimal performance and maximum distance, OM3 or OM4 grade MMF is recommended (Type B, Female MPO to Female MPO, Polarity B for direct connection between two transceivers).
- Q3: Can this transceiver connect to four 10G SFP+ modules?
- A3: Yes, the QSFP-40G-eSR4 typically supports breakout applications. Using an MPO to 4xLC Duplex breakout cable, you can connect this 40G QSFP+ port to four separate 10G SFP+ SR ports.
- Q4: Is this module hot-pluggable?
- A4: Yes, the QSFP-40G-eSR4 is hot-pluggable, allowing you to install or remove it from a compatible switch or router without shutting down the system.
- Q5: Does this transceiver support Digital Diagnostics Monitoring (DDM/DOM)?
- A5: Yes, it supports DDM/DOM, enabling real-time monitoring of parameters like temperature, voltage, optical power, and bias current.
- Q6: What is the maximum power consumption of this module?
- A6: The typical maximum power consumption is [Specify Value, e.g., less than 1.5 Watts]. Please refer to the product datasheet for exact specifications.
- Q7: What devices is this transceiver compatible with?
- A7: Our QSFP-40G-eSR4 transceivers are designed for broad compatibility with major switch and router brands that adhere to QSFP+ MSA standards. Please check our compatibility matrix or contact us with your specific equipment model for confirmation. (Link to compatibility page if available)
6. Proposed Installation Steps:
Quick Installation Guide:
- Safety First: Wear an ESD (Electrostatic Discharge) wrist strap to prevent damage to the transceiver.
- Remove Dust Caps: Take off the protective dust cap from the transceiver’s optical bores and the network fiber cable connector.
- Align Transceiver: Align the QSFP+ module with the port slot on your network device.
- Insert Transceiver: Gently slide the transceiver into the slot until it clicks into place. Most QSFP+ modules have a pull tab or bail clasp; ensure it’s in the correct position for insertion.
- Connect Fiber Cable: Connect the MPO fiber optic cable to the transceiver. Ensure the connector is clean and properly aligned.
- Verify Connection: Check the port status LEDs on your network device to confirm a successful link. Consult your device’s manual for LED indicator meanings.
- Configuration (If Necessary): Some devices may require port configuration.
| Brand |
OEM |
|---|---|
| Model |
QSFP+ 40G ESR4 |

Tom –
40GBASE-eSR4 QSFP+ Optical Transceiver – 850nm, 300m (OM3)/400m (OM4) MMF, MPO Connector