X Ray

SMT X-Ray inspection systems are widely used in electronics manufacturing to inspect hidden solder joints, BGA connections, voids, bridges, and internal defects that cannot be detected by traditional visual inspection. Different X-Ray systems are designed for different production volumes, inspection requirements, and PCB complexities.

According to the products and solutions from Reaching EA, SMT X-Ray systems can mainly be divided into the following types:

1. Inline 3D AXI (Automated X-Ray Inspection) System

The Inline 3D AXI system is designed for fully automatic high-speed SMT production lines. It performs real-time inspection directly inside the SMT line without stopping production. This type of system is ideal for mass production environments requiring continuous quality control.

Main Features

• Fully automatic inline inspection
• High-speed dynamic imaging
• Circular multi-angle projection reconstruction
• 3D volumetric defect analysis
• IPC-standard defect inspection
• AI noise reduction technology
• High inspection accuracy for hidden solder joints

Typical Inspection Applications

• BGA
• LGA
• CSP
• QFN
• SOP/QFP
• IGBT modules
• Power modules
• POP components
• Through-hole solder joints

Typical Detectable Defects

• Solder voids
• Open solder joints
• Bridging
• Insufficient solder
• Offset
• Bubble defects
• THT solder filling problems

This type of machine is best suited for:

• Automotive electronics
• Industrial control
• Consumer electronics
• Semiconductor packaging
• High-volume SMT factories

2. XL Inline 3D AXI System

The XL Inline 3D AXI system is a large-format version designed for oversized PCBs and heavy boards. Compared with standard inline AXI machines, it supports larger PCB dimensions and higher board weight capacity.

Main Features

• Supports extra-large PCB sizes
• Heavy board handling capability
• High-resolution 3D reconstruction
• High-speed inline inspection
• Stable dual-linear motor movement system

Suitable Applications

• Telecom boards
• Server motherboards
• Industrial control PCBs
• Power electronics
• New energy equipment

This system is ideal for manufacturers producing:

• Large-format electronics
• Heavy industrial PCBs
• High-layer-count boards

3. 2D X-Ray Inspection System

2D X-Ray inspection systems use single-angle imaging to inspect solder joints and internal PCB structures. Compared with 3D AXI systems, 2D systems are generally simpler and more cost-effective for basic inspection tasks.

Main Features

• Single-angle X-Ray imaging
• Lower inspection cost
• Faster basic defect verification
• Easier operation and maintenance

Suitable Applications

• Basic BGA inspection
• Process verification
• Sampling inspection
• Failure analysis

Advantages

• Lower investment cost
• Simple operation
• Good for entry-level SMT factories

Limitations

• Limited depth analysis
• Lower accuracy for complex hidden defects
• Less suitable for advanced semiconductor packages

4. Offline X-Ray Inspection System

Offline X-Ray systems are standalone machines used outside the production line. Operators manually load PCBs for inspection. These systems are commonly used in laboratories, repair stations, prototype production, and failure analysis environments.

Main Features

• Manual PCB loading
• Flexible inspection process
• High-magnification analysis
• Detailed defect verification

Suitable Applications

• R&D laboratories
• Prototype production
• Repair centers
• Quality analysis labs
• Small-batch SMT production

Advantages

• Lower production line integration cost
• Flexible operation
• Detailed manual inspection capability

5. High-Resolution Microfocus X-Ray System

Microfocus X-Ray systems use extremely small focal spot X-Ray tubes to achieve ultra-high image resolution for fine-pitch electronic components and semiconductor devices.

Main Features

• Ultra-high resolution imaging
• Microfocus X-Ray source
• Fine-pitch solder inspection
• Semiconductor package analysis

Typical Applications

• Semiconductor inspection
• Advanced packaging
• Chip-level analysis
• Micro-BGA inspection
• Precision electronic assemblies

Suitable Industries

• Semiconductor manufacturing
• Aerospace electronics
• Medical electronics
• High-reliability electronics

6. AI-Powered SMT X-Ray Inspection System

Modern SMT X-Ray machines increasingly integrate AI algorithms for automatic defect recognition and false-call reduction.

Main Features

• AI-based image processing
• Automatic defect classification
• Smart noise reduction
• Improved programming efficiency
• Reduced false alarms

Advantages

• Faster programming
• More stable inspection results
• Improved yield analysis
• Better process control

This type of technology is becoming popular in:

• Smart factories
• Industry 4.0 production lines
• High-precision electronics manufacturing

Choosing the correct SMT X-Ray machine depends on several factors:

Conclusion

SMT X-Ray inspection systems play a critical role in modern electronics manufacturing by detecting hidden soldering defects and improving product reliability. From basic 2D systems to advanced AI-powered 3D AXI platforms, each type serves different production needs and inspection requirements.

Manufacturers should select the appropriate X-Ray system based on:

• PCB complexity
• Production volume
• Inspection accuracy requirements
• Automation level
• Budget
• Industry application

For advanced SMT production lines, 3D inline AXI systems with AI technology are becoming the preferred solution due to their speed, accuracy, and automation capabilities.

At Reaching EA, we provide advanced SMT X-Ray inspection solutions designed to improve solder joint quality, reduce production defects, and increase manufacturing reliability. Our systems are suitable for modern SMT production lines, semiconductor packaging, automotive electronics, and high-precision PCB inspection applications.

1. High Precision Inspection Capability

Our SMT X-Ray inspection systems use advanced high-resolution imaging technology to accurately detect hidden soldering defects that cannot be identified by traditional AOI systems.

Detectable Defects

• BGA voids
• Open solder joints
• Bridging
• Insufficient solder
• Head-in-pillow defects
• Component offset
• Bubble and cavity defects
• Through-hole solder filling issues

This helps manufacturers improve product quality and reduce field failures.

2. Advanced 3D AXI Technology

We provide advanced 3D Automated X-Ray Inspection (AXI) systems with multi-angle reconstruction technology for more accurate defect analysis.

Advantages of 3D Inspection

• Better hidden joint analysis
• Improved defect recognition accuracy
• Reduced false calls
• More reliable inspection results
• Enhanced process monitoring

Our 3D AXI systems are ideal for complex PCB assemblies and advanced semiconductor packages.

3. AI-Powered Intelligent Inspection

Our SMT X-Ray machines integrate intelligent AI algorithms to optimize inspection performance and production efficiency.

AI Features

• Automatic defect recognition
• Smart image enhancement
• False alarm reduction
• Faster program creation
• Stable inspection consistency

This helps factories reduce operator dependency and improve overall production efficiency.

4. Inline and Offline Solutions Available

We offer both inline and offline SMT X-Ray inspection systems to meet different manufacturing requirements.

Inline X-Ray Systems

• Real-time inspection during production
• High-speed automated inspection
• Suitable for mass production lines

Offline X-Ray Systems

• Flexible manual inspection
• Ideal for laboratories and prototype production
• Detailed failure analysis capability

Customers can choose the most suitable solution according to their production environment.

5. Support for Large and Complex PCB Inspection

Our systems support inspection for:

• Large-size PCBs
• High-density assemblies
• Multi-layer boards
• Heavy industrial boards
• Semiconductor packaging

The XL inline AXI solution is especially suitable for large-format PCB applications such as telecom and industrial control equipment.

6. Wide Industry Applications

Our SMT X-Ray inspection systems are widely used in various industries, including:

• Automotive electronics
• Consumer electronics
• Industrial control
• Medical electronics
• Aerospace electronics
• Semiconductor manufacturing
• New energy products
• Telecom equipment

We help customers meet strict quality control standards across multiple industries.

7. Stable and Reliable Machine Performance

Our machines are designed with stable mechanical structures and reliable motion control systems to ensure long-term production stability.

Benefits

• High inspection repeatability
• Stable imaging quality
• Reduced maintenance requirements
• Long service life
• Continuous production support

This helps reduce downtime and improve factory productivity.

8. Easy Operation and User-Friendly Software

Our SMT X-Ray systems feature user-friendly software interfaces for easier operation and faster training.

Software Advantages

• Simple programming process
• Fast product switching
• Real-time defect visualization
• SPC data analysis
• MES system compatibility

Operators can quickly learn and efficiently manage inspection tasks.

9. Global Technical Support

Reaching EA provides comprehensive technical support services for customers worldwide.

Support Services

• Remote technical support
• Online troubleshooting
• Installation assistance
• Training services
• Spare parts support
• Production optimization advice

We help customers maintain stable and efficient SMT production operations.

10. Complete SMT Production Line Solution

In addition to SMT X-Ray inspection systems, we also provide complete SMT production line solutions, including:

• Pick and place machines
• SPI systems
• AOI systems
• Reflow ovens
• Wave soldering equipment
• SMT handling machines

This allows customers to build efficient one-stop SMT manufacturing solutions with compatible equipment integration.

Conclusion

Choosing Reaching EA SMT X-Ray inspection systems means choosing:

High inspection accuracy

Advanced AI and 3D AXI technology

Stable machine performance

Flexible inline and offline solutions

Professional technical support

Complete SMT line integration capability

Our goal is to help electronics manufacturers improve quality control, reduce defects, and achieve more reliable SMT production.

SMT X-Ray inspection systems use X-Ray imaging technology to inspect hidden solder joints and internal structures of electronic components on printed circuit boards (PCBs). Unlike traditional visual inspection systems, SMT X-Ray machines can detect defects inside solder joints and underneath components that cannot be seen by the human eye or standard AOI systems.

SMT X-Ray inspection is widely used for inspecting:

• BGA
• QFN
• CSP
• LGA
• IGBT modules
• Through-hole solder joints
• Semiconductor packages

The SMT X-Ray inspection process mainly includes the following steps:

1. X-Ray Generation

The X-Ray tube generates high-energy X-Rays that penetrate the PCB and electronic components.

Different materials absorb X-Rays differently depending on:

• Material density
• Thickness
• Atomic structure
• For example:
• Metal solder absorbs more X-Rays
• Air voids absorb fewer X-Rays
• PCB substrates allow more X-Ray penetration

This difference creates contrast in the X-Ray image.

2. X-Ray Penetration Through PCB Assembly

The generated X-Rays pass through:

• PCB layers
• Solder joints
• Electronic components
• Semiconductor packages

As the X-Rays travel through the assembly, part of the radiation is absorbed by the materials while the remaining X-Rays continue toward the detector.

Dense areas appear darker in the image, while low-density areas appear brighter.

This allows the system to visualize hidden internal structures.

3. Image Detection and Conversion

After penetrating the PCB, the X-Rays reach the digital detector.

The detector converts X-Ray energy into digital images for analysis.

The system software then processes the image using:

• Image enhancement
• Noise reduction
• Contrast optimization
• AI defect recognition algorithms

The result is a high-resolution image showing the internal solder joint condition.

4. Defect Analysis

The SMT X-Ray software automatically analyzes the captured images to identify defects.

Common Detectable Defects

• Solder voids
• Open joints
• Bridging
• Insufficient solder
• Excess solder
• Head-in-pillow defects
• Component misalignment
• Cracks
• Bubble defects
• Through-hole filling problems

The system compares inspection results with preset standards or reference images.

2D X-Ray Inspection Principle

2D X-Ray systems capture images from a single angle.

Characteristics

• Faster imaging speed
• Lower system cost
• Simpler operation

Suitable For

• Basic BGA inspection
• Manual defect verification
• Prototype production
• Sampling inspection

However, 2D systems have limited depth analysis capability for complex assemblies.

3D AXI Working Principle

3D Automated X-Ray Inspection (AXI) systems use multiple projection angles to reconstruct three-dimensional images of solder joints.

3D AXI Process

X-Ray source captures multiple images from different angles

Software reconstructs the 3D structure

System analyzes solder volume and defect location

Advantages

Higher inspection accuracy

Better hidden defect detection

Reduced false calls

Improved process control

3D AXI is especially important for:

Fine-pitch BGA

Advanced semiconductor packaging

Automotive electronics

High-reliability products

Inline SMT X-Ray systems are integrated directly into the SMT production line.

Working Process

PCB enters the X-Ray machine automatically

Conveyor positions the PCB

X-Ray inspection is performed automatically

Software analyzes defects in real time

NG boards are identified for repair or rejection

Inspection data is uploaded to MES/SPC systems

Advantages

Real-time quality monitoring

High-speed automated inspection

Reduced manual labor

Better production traceability

Modern SMT X-Ray systems integrate AI technology to improve inspection efficiency.

AI Functions

Automatic defect classification

Smart image optimization

False alarm reduction

Self-learning inspection models

Faster programming

AI technology helps manufacturers improve consistency and reduce operator dependency.

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