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Cisco Compatible 40G QSFP+ SR4 Optical Transceiver Module
QSFP-40G-SR4
The Cisco Compatible 40G QSFP+ SR4 optical transceiver is designed for 40GbE multimode fiber connectivity in data center and enterprise networks.Supporting 40GBASE-SR4 transmission over OM3 and OM4 multimode fiber, this 40g qsfp sr4 module provides up to 100m reach through an MPO-12 interface. It offers reliable performance for spine-leaf architectures, switch interconnects, and high-density data center deployments.
Product Highlights
*Integrated Macom chip, max power consumption 1.5W
*Tested on target switches for top performance, quality and reliability
*Hot-swappable: boosts uptime and eases servicing
*Built-in DDM: Real-time parameter monitoring
*Interoperable with other IEEE-compliant 40G interfaces (as applicable)
*Compliant with SFF-8436 for broad compatibility
*High-speed electrical interface meets IEEE 802.3 40GBASE-SR4
Product Highlights
*Integrated Macom chip, max power consumption 1.5W
*Tested on target switches for top performance, quality and reliability
*Hot-swappable: boosts uptime and eases servicing
*Built-in DDM: Real-time parameter monitoring
*Interoperable with other IEEE-compliant 40G interfaces (as applicable)
*Compliant with SFF-8436 for broad compatibility
*High-speed electrical interface meets IEEE 802.3 40GBASE-SR4
Quantity:
Brand Compatible With 40GBASE-SR4 QSFP+ Transceiver Module（QSFP+ Double Fiber Multimode, 40G, 850nm, 100m, MTP/MPO, DDM）
The 40G QSFP SR4 module is widely deployed in modern data center environments where high-bandwidth multimode connectivity is required.
By utilizing parallel optical transmission technology, the module enables efficient switch-to-switch, switch-to-server, and storage network interconnections while simplifying fiber cabling infrastructure.
Designed for enterprise, cloud, and HPC networks, this 40GBASE-SR4 transceiver provides a reliable and scalable solution for expanding 40GbE network capacity.
By utilizing parallel optical transmission technology, the module enables efficient switch-to-switch, switch-to-server, and storage network interconnections while simplifying fiber cabling infrastructure.
Designed for enterprise, cloud, and HPC networks, this 40GBASE-SR4 transceiver provides a reliable and scalable solution for expanding 40GbE network capacity.
Product Details
Part Number：QSFP-40G-SR4
Description：40G QSFP SR4 multimode optical transceiver, 40G, MTP/MPO, 850nm, 100m, DDM
Compatible with：H3C, HW, Cisco, HP, etc
Data Rate | Module Type | Distance | Wavelength | Interface | Temperature | DDM |
40Gb/s | QSFP+ | 100M | 850nm | MTP/MPO | 0~70℃ | Yes |
Specifications
Model number | QSFP-40G-SR4 | Brand | Firstoptic |
Form Factor | QSFP+ | Max. Data Rate | 41.25Gbps |
Wavelength | 850nm | Max. Cable Distance | 100m@OM3/150m@OM4 |
Connector | MTP/MPO-12 Male | Media | MMF |
Transmitter Type | VCSEL | Receiver Type | PIN |
TX Power | -7.1~1.9dBm | Receiver Sensitivity | <-5.4dBm |
Power Budget | 3.8dB | Receiver Overload | 2.4dBm |
Typical Power Consumption | <1.5W | Extinction Ratio | >3dB |
DDM/DOM | Supported | Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
Core Size | 50um | Modulation | NRZ |
Protocols | IEEE 802.3 40GBASE-SR4, SFF-8436 | Warranty | 3 Years |
Certification system
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Application Scenarios
Data Center Network Connectivity
The 40GBASE-SR4 optical transceiver is commonly deployed in data center networks using OM3 or OM4 multimode fiber.
When paired with MTP/MPO fiber patch cords and 40G QSFP+ switch ports, it provides reliable high-bandwidth connectivity for leaf-spine architectures and server aggregation networks.
40G to 4×10G Breakout Connectivity
The 40G QSFP+ SR4 transceiver enables breakout connections from one 40G switch port to four independent 10G SFP+ links.
Using MPO-8 to 4×LC duplex OM4 multimode fiber cabling, it provides a scalable solution for server connectivity, access layer deployments, and network capacity expansion.
Features
Before shipping, we conduct rigorous product testing, including the testing of QSFP multimode optical modules, to ensure that every product meets the high quality standards. We are committed to providing the most reliable and highest quality optical fiber communication products, to bring excellent performance and stability to our customers.
Test Equipment
Compatible Test
QC TestHigh Compatibility for all Brands
The company sells a full line of QSFP+ optical module optical fiber products compatible with all major brands of equipment.
FAQ Section
1: What is a 40GBASE-SR4 optical transceiver?
The 40GBASE-SR4 optical transceiver is a 40G QSFP SR4 module designed for multimode fiber networks using an MTP/MPO interface.
Q2: What fiber is required for a 40G QSFP SR4 module?
A 40G QSFP SR4 module requires OM3 or OM4 multimode fiber with MTP/MPO connectivity.
Q3: What is the maximum transmission distance of 40GBASE-SR4?
The module supports up to 100m over OM4 fiber and up to 150m over OM3 fiber.
Q4: Where is a 40G QSFP multimode module commonly used?
Typical applications include data centers, HPC clusters, cloud networks, and switch-to-switch interconnect environments.
Q5: Does a 40GBASE-SR4 module support breakout applications?
Yes. The module can support 4×10G breakout connectivity when used with compatible MPO breakout cabling and supported switch platforms.
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