Essential details
Product Code:40G QSFP+ SR4/ESR4/IR4PSM/LR4PSM/SRBD/IR4/LR4/ER4
Product Introduction
40G QSFP+ Transceiver Module
40GBASE QSFP+ Optical Module Overview
Product Overview
The 40G QSFP+ transceiver is a cost-effective 4-channel NRZ fiber optic solution built for legacy and hybrid data center networks, 40G Ethernet links and InfiniBand SDR/DDR/QDR systems. This standard 40G QSFP+ optical module fully complies with IEEE 802.3ba and SFF-8436 QSFP+ MSA specifications, adopting two mature optical architectures: 4 parallel VCSEL lanes for multimode short-reach models and 4 CWDM multiplex/demultiplex lanes for single-mode long-reach variants.
Our full lineup of 40GBASE QSFP+ fiber transceivers covers complete short, medium and long-distance transmission scenarios, including multimode SR4 / ESR4 / SRBD, parallel single-mode IR4PSM / LR4PSM, and CWDM single-mode IR4 / LR4 / extended-reach ER4 up to 40km reach. Two standard connector options (MPO-12 and duplex LC) support MMF multimode fiber and SMF single-mode fiber respectively, delivering plug-and-play interoperability with mainstream switches, routers, storage and high-performance computing equipment.
Every 40G QSFP+ DDM transceiver features low power consumption, electrically hot-pluggable design and built-in digital diagnostic monitoring, supporting real-time tracking of optical power, temperature, voltage and laser bias for easy network maintenance. With commercial operating temperature from 0°C to 70°C, these 40G fiber modules remain stable for rack-to-rack interconnection, proprietary optical backplanes and telecom metro transmission links.
Key Features of Standard 40G QSFP+ Transceiver
- Standard QSFP+ hot-pluggable form factor, all 40G QSFP+ optical modules support non-stop equipment replacement without network downtime
- Dual optical design options: 4 parallel lanes for SR4/ESR4 multimode; 4 CWDM Mux/Demux lanes for IR4/LR4/ER4 single-mode long-reach transceivers
- Full DDM digital diagnostic monitoring built-in for all 40GBASE QSFP+ transceivers
- Low power design, high reliability for long-term continuous operation in IDC and computer rooms
- Wide commercial temperature range: 0°C ~ 70°C, stable indoor deployment
- Complete product portfolio covering 100m–40km transmission distance, with MPO-12 and duplex LC standard connectors
- Multi-protocol compatible: 40GBASE-SR4, 40GBASE-LR4, 40GBASE-ER4, InfiniBand SDR/DDR/QDR, 10GBASE-SR applications
Application Scenarios for 40G QSFP+ Fiber Modules
- High-speed interconnection between switches, routers and transport gear with 40G QSFP+ SR4 / ESR4 multimode transceivers
- Rack-to-rack, shelf-to-shelf, board-to-board and board-to-optical backplane interconnections inside hybrid data centers
- Server clusters, supercomputing and HPC high-speed fiber links40GBASE Ethernet short, medium and long-haul transmission, including 40G QSFP+ ER4 40km metro links
- InfiniBand SDR, DDR and QDR high-performance interconnect systemsLegacy network upgrade and enterprise campus 40G optical networking
Standard Industry Model Specification Table
| Standard IEEE Model Name | Official Description | Bit Rate | Wavelength | Fiber & Max Reach | Tx Optical Power | Rx Sensitivity | Connector |
|---|---|---|---|---|---|---|---|
| 40GBASE-SR4 QSFP+ | 40G QSFP+ SR4 Multimode Transceiver | 40Gbps | 850nm VCSEL | MMF, 150m | -7.6~1dBm | < -9.5dBm | MPO-12 |
| 40GBASE-ESR4 QSFP+ | 40G QSFP+ ESR4 Extended Short Reach | 40Gbps | 850nm VCSEL | MMF, 300m | -7.3~1dBm | < -9.9dBm | MPO-12 |
| 40GBASE-IR4PSM QSFP+ | 40G QSFP+ IR4 PSM Parallel SM | 40Gbps | 1310nm DFB | SMF, 2km | -7.6~0.5dBm | < -11.5dBm | MPO-12 |
| 40GBASE-LR4PSM QSFP+ | 40G QSFP+ LR4 PSM 10km Transceiver | 40Gbps | 1310nm DFB | SMF, 10km | -6~-1dBm | < -12.6dBm | MPO-12 |
| 40GBASE-SRBD QSFP+ | 40G QSFP+ BiDi Multimode Module | 40Gbps | 850nm | MMF, 100m | -4~5dBm | < -7.1dBm | Duplex LC |
| 40GBASE-IR4 QSFP+ | 40G QSFP+ IR4 CWDM 2km Transceiver | 40Gbps | CWDM Grid | SMF, 2km | -7~2.4dBm | < -11.7dBm | Duplex LC |
| 40GBASE-LR4 QSFP+ | 40G QSFP+ LR4 CWDM 10km Module | 40Gbps | CWDM Grid | SMF, 10km | -7~2.3dBm | < -13.7dBm | Duplex LC |
| 40GBASE-ER4 QSFP+ | 40G QSFP+ ER4 Long Reach 40km Transceiver | 40Gbps | CWDM 1271/1291/ 1311/1331nm | SMF, 40km | -2.7~4.5dBm | < -19dBm | Duplex LC |
Core Technical Parameters
- Form Factor: Electrically hot-pluggable QSFP+
- Channel Architecture: 4×10G NRZ parallel
- Compliance Standards: IEEE 802.3ba, SFF-8436 QSFP+ MSA
- Monitoring: Built-in DDM Digital Diagnostic Monitoring
- Optical Interface: Optional MPO-12 / Duplex LC
- Operating Temperature (Commercial): 0°C ~ 70°C
- Supported Protocols: 40GBASE-SR4 / LR4 / ER4, InfiniBand SDR/DDR/QDR, 10GBASE-SR
Order & Customization Support
- All standard 40G QSFP+ transceiver models support sample testing and mass bulk supply.
- Custom industrial wide-temperature and special wavelength solutions are available to meet unique project demands. Full datasheets, factory test reports and device compatibility matrices are free to download on the website.
- Every 40G QSFP+ optical module undergoes full optical & electrical inspection before shipment, with long-term warranty and dedicated optical engineering technical support. Matching MPO harnesses and LC single-mode jumpers are provided for complete 40G network deployment.
Product details
