Industrial-grade QSFP+ is a 40 Gbps optical transceiver module designed for reliable operation in harsh environments, featuring an extended operating temperature range of -40°C to +85°C. It is commonly used in applications such as industrial networking and outdoor communications where standard commercial modules are unsuitable. Its key distinction from the newer Industrial QSFP28 lies primarily in the data rate, with QSFP+ supporting 40 Gbps compared to the 100 Gbps of QSFP28, while both share similar ruggedized construction for extreme conditions.
C-light provides QSFP+ (40G, 200m MMF & 2~60km SMF, industrial) for rugged network application.

Industrial Temp. 40G QSFP+.pdf
Part Number List
C-light deeply knows the value ofcompatibility and interoperability to each optics. Everymodule C-light provides must run through programming and an extensive series ofplatform diagnostic teststo proveits performance and compatibiliy. In our test center,we care everydetailfromstaffto facilities-professionally trained staff, advanced test facilities and comprehensive original-brand switches,to ensure our customers to receive the optics with superior quality.
Our data system allows effective product management and quality control according to the unique serial number, properly tracking the order, shipment and every part.
Our coding facility programsall of our parts to standard OEM specs for compatibility on all major vendors and systems such as Cisco, Juniper,Brocade, HP, Dell, Arista and so on.
We have comprehensive lineof original-brand switches for recreating an environment and testing each optics in practicalapplication to ensure qualityand distance.
The final test assured step to ensure our products to be shipped with perfect package.
Industrial Temperature QSFP+ Optical Transceiver FAQ
Q1: What is an industrial temperature QSFP+ optical transceiver?
An industrial temperature QSFP+ optical transceiver is a 40G optical module designed to provide reliable high-speed data transmission in harsh and demanding operating environments.
Compared with standard commercial QSFP+ modules, industrial temperature QSFP+ modules are optimized for:
Wider operating temperature range
Higher environmental reliability
Stable optical performance
Long-term outdoor deployment
C-LIGHT Industrial QSFP+ supports 40Gbps transmission and is designed for applications where standard commercial optical modules may not provide sufficient reliability.
Typical applications include:
Industrial Ethernet networks
Outdoor communication systems
Telecom infrastructure
Transportation networks
Q2: Why are industrial temperature QSFP+ modules important?
Many communication networks are deployed outside traditional temperature-controlled data centers, where optical modules may face more challenging environmental conditions.
Industrial environments may experience:
Extreme temperature changes
Outdoor cabinet conditions
Dust and environmental stress
Limited climate control
Industrial temperature QSFP+ modules help maintain stable network operation by providing:
Better temperature tolerance
Improved reliability
Reduced communication interruptions
Longer operational lifetime
They are especially important for mission-critical networks requiring continuous and reliable connectivity.
Q3: What is the difference between commercial QSFP+ and industrial QSFP+?
The main difference between commercial QSFP+ and industrial QSFP+ modules is their operating environment capability and reliability requirements.
| Feature | Commercial QSFP+ | Industrial QSFP+ |
| Application Environment | Data centers | Industrial / outdoor networks |
| Temperature Range | Standard temperature | Extended temperature |
| Reliability Requirement | General reliability | Higher reliability |
| Deployment Scenario | Controlled environment | Harsh environment |
Industrial QSFP+ modules use selected components and stricter quality control processes to improve stability and reliability under demanding conditions.
Q4: What temperature range can industrial QSFP+ optical modules support?
Industrial temperature QSFP+ optical modules are designed for applications requiring extended operating temperature capability.
C-LIGHT Industrial QSFP+ supports an operating temperature range of:
-40°C to +85°C
This extended temperature capability allows deployment in:
Outdoor communication cabinets
Industrial facilities
Transportation systems
Remote network locations
The wider temperature range helps maintain consistent optical performance and reliable 40G transmission in challenging environments.
Q5: What are the advantages of industrial temperature QSFP+ optical modules?
Industrial QSFP+ optical modules provide several advantages for demanding network environments.
Wide Temperature Operation
Supports stable operation under extreme temperature conditions and outdoor deployment environments.
High Reliability
Uses optimized components and enhanced testing procedures to improve durability and long-term stability.
Stable 40G Transmission
Provides reliable high-speed communication for industrial and telecom applications.
Flexible Deployment
Suitable for environments where standard commercial optical modules cannot meet reliability requirements.
Long-Term Network Availability
Helps reduce maintenance requirements and improve overall system stability.
Q6: What are the applications of industrial QSFP+ optical transceivers?
Industrial temperature QSFP+ modules are widely used in applications requiring reliable 40G optical connectivity under challenging environmental conditions.
Typical applications include:
Industrial Networks
Factory automation networks
Industrial Ethernet systems
Telecom Infrastructure
Metro networks
Carrier communication systems
Transportation Communication
Railway networks
Intelligent transportation systems
Outdoor Network Deployment
Remote communication nodes
Outdoor cabinets
Industrial QSFP+ provides reliable connectivity beyond traditional controlled data center environments.
Q7: How do you choose the right industrial QSFP+ optical module?
Selecting the correct industrial QSFP+ module requires evaluating operating conditions, transmission requirements, and equipment compatibility.
1. Operating Environment
Consider:
Indoor or outdoor deployment
Temperature requirements
Environmental conditions
2. Transmission Distance
Choose according to:
Short-distance multimode fiber links
Long-distance single-mode fiber connections
C-LIGHT provides industrial QSFP+ solutions covering different transmission distances and fiber application requirements.
3. Equipment Compatibility
Confirm compatibility with:
Switches
Routers
Optical transport systems
4. Network Requirements
Evaluate:
Bandwidth requirements
Reliability requirements
Future expansion plans
Q8: What is the future of industrial temperature QSFP+ optical modules?
As networks continue expanding into edge computing, industrial automation, and outdoor communication environments, industrial optical modules will remain an important connectivity solution.
Future applications include:
Smart manufacturing
Industrial IoT
Edge computing networks
Smart transportation
5G infrastructure
Although higher-speed optical technologies such as 100G, 400G, and 800G are expanding rapidly in large data centers, industrial 40G QSFP+ continues to provide a practical solution for reliable connectivity in specialized environments.
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