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Full PCBA testing and inspection capability overview

PCBA Testing Capabilities

  • Visual Inspection: General appearance and assembly quality check
  • FAI (First Article Inspection): Full verification for the first sample running through all production procedures
  • X-ray Inspection: Inspection for BGA, QFN and hidden solder joints on PCBs
  • AOI Testing: Detect insufficient solder paste, missing components, reversed polarity and placement defects
  • 3D AOI Testing: Three-dimensional inspection to identify missing or misaligned SMT components
  • 3D SPI Testing: Precisely measure solder paste volume for SMT printing process control
  • ICT (In-Circuit Test): Precision electrical performance validation
  • FCT (Functional Test): Functional verification following your customized test specifications

Online Testing (ICT)

– Precision Electrical Validation
What it checks:
Short circuits & open circuits
Incorrect component values (resistors, capacitors, inductors, etc.)
Missing or misassembled electronic parts

Key Advantages:
High Accuracy – Captures subtle electrical abnormalities
Fast & Scalable – Perfect for mass-volume manufacturing
Early Defect Detection – Effectively cut subsequent rework expenses

Best for:
Mass-produced PCBs requiring strict electrical compliance standards within PCBA manufacturing
ICT In-Circuit Test equipment for assembled PCB boards
Flying Probe Test for prototype and low-volume PCBA

Flying Probe Test

– Flexible & Efficient PCB Testing
What it checks:
Electrical connectivity (shorts & opens)
Component parameters (Resistors, Capacitors, Inductors, Diodes)
Missing or incorrect components
Basic IC electrical testing

Key Advantages:
No custom test fixtures required – Save cost for prototypes & small batches
Quick program adjustment for hardware revisions
High precision for tiny pads and high-density circuit boards
Low upfront investment compared with ICT for medium-scale runs

Best for:
Small batches and customized designs
High-density complex PCBs
Frequently updated prototypes
Cost-sensitive low-volume projects

Functional Test (FCT)

– Real-World Performance Verification
What it checks:
Complete system operation (power supply, signal transmission, firmware execution)
Communication interfaces (USB, I2C, Bluetooth and more)
End-product functions (buttons, displays, sensor response)

Key Advantages:
Simulate actual application scenarios – Verify boards work as designed
Firmware compatibility and hardware-software integration validation
Highly customizable for complex product specifications

Best for:
Final quality validation before shipment for consumer electronics, IoT devices and industrial control boards
FCT functional testing for finished PCB assemblies
3D SPI solder paste inspection machine on SMT line

Advantages of SPI (Solder Paste Inspection)

– Precision Solder Control
SPI acts as the first quality barrier in SMT manufacturing. It monitors solder paste printing before component placement. Early detection of printing defects improves first-pass yield and avoids expensive rework after reflow.

What it checks:
Solder paste volume, thickness and coverage area
Print offset, bridging or insufficient paste deposition
Stencil alignment accuracy

Key Advantages:
Prevent SMT defects in advance, reduce post-reflow rework
3D scanning technology accurately measures paste geometry
Provide data support to optimize stencil design and printing parameters
High-speed scanning without slowing down production tact time

Best for:
High-density PCBA with 0201 / 01005 components and fine-pitch BGA; high-reliability products requiring strict solder joint quality

Automated Optical Inspection (AOI)

– High-Speed Defect Detection
What it checks:
Solder joint quality (bridging, voids, insufficient solder)
Component placement offset and reversed polarity
Surface contamination and mechanical scratches

Key Advantages:
Non-contact high-speed full board scanning
Stable and repeatable inspection to eliminate human visual error
Capable of detecting defects on miniature 01005 components

Best for:
High-volume continuous SMT assembly production lines
AOI automated optical inspection equipment for SMT assembly
X-Ray inspection machine checking BGA hidden solder joints

X-Ray Inspection

– Hidden Defect Detection
What it checks:
Hidden solder joints under packages
Voids, cracks and misalignment inside BGA, QFN connections

Key Advantages:
Penetrate component housings to inspect blind areas invisible to AOI
Mandatory inspection solution for high-reliability medical, automotive and aerospace electronics

Best for:
Complex PCB assemblies with concealed solder connections

Environmental & Reliability Testing

– Stress Testing for Durability
What it checks:
Temperature cycling (-40°C ~ +125°C)
Vibration, mechanical shock and humidity resistance
Long-term operational stability under extreme environments

Key Advantages:
Simulate severe working conditions to verify product durability
Reduce field failure risks for automotive, medical and military electronic products

Best for:
Mission-critical products requiring long-term service reliability
Environmental chamber for PCBA reliability stress testing
Comprehensive PCBA testing service advantages overview

Advantages of Our Testing Services

Outcome: Higher production yield, lower failure rate and stable reliable finished products.

Comprehensive inspection coverage – from basic electrical testing to environmental simulation
Advanced testing equipment: high-precision ICT, AOI, X-Ray and FCT platforms
Compliant with IPC, ISO and automotive industry quality standards
Automated testing workflow accelerates your product time-to-market

Best for: Customers pursuing stable quality for commercial and industrial electronic assemblies

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