How Our PCBA Factory Ensure the Product Quality?
The quality control in the PCBA factory very important, we needs to cover the entire process.
The core control points and suggested tools as below, Key Steps in PCBA Quality Control also as below:
1. Incoming Material Inspection (IQC)
Key inspections include verifying the authenticity of components, the activity of solder paste, and the warpage of PCB boards.
X-Ray is used for inspecting BGA packages, and AOI equipment is employed for automatic comparison of material codes.
2. Process control (IPQC)
Control Point Method Tool Recommendation
Solder Paste Printing SPI 3D Thickness Scanning Deltron TR7500 Series
Solder Paste Soldering Accuracy First Article Confirmation + Hourly Sampling Inspection Panasonic Soldering Machine CMS System
Reflow Soldering Temperature Zone Real-time Temperature Curve Monitoring KIC X5 Thermometer
3. Test Verification (FCT/ICT)
Flying needle test: Detect open circuit / short circuit in the circuit (suitable for small batch production)
Function test: Simulate the operating environment of the terminal (it is recommended to use an oscilloscope to capture the signals)
Aging test: Continuous operation in a high-temperature and high-humidity environment for 48 hours
⚠️ Special control for high-risk items
ESD protection: The grounding resistance of the workbench is less than 4Ω, and employees wear anti-static wrist straps (daily inspection)
BGA welding: Use X-Ray to detect the void rate (requirement: <15%)Program burning: Double-check the version number of the burning file by two people (error prevention system)
Certification and continuous improvement
Obtained ISO9001 + ISO13485 dual system certifications (essential for medical PCBA)
Use “Factory Inspection Tools” to collect production line data:
→ Automatically generate CPK process capability index report.
→ Scan to trace the supplier of each batch of materials.
Monthly customer complaint rate is included in KPI assessment.
