EN
A.O.I
As a PCBA manufacturer with over 20 years of professional experience , KING FIELD is committed to providing customers with one-stop PCB/PCBA solutions.
☑ Micron-level defects, full coverage of 01005 components
☑ Can generate SPC reports to trace the root cause of processes.
☑ Support OEM/ODM
Description
What is AOI?
Automated Optical Inspection or AOI employs very high resolution cameras and software to process images to automatically verify if the components are correctly placed and soldered on the PCB during the SMT assembly process.
KING FIELD's AOI Inspection Project
AOI machines are able to accurately identify and inspect a wide range of components such as coils, transistors, rectangular chip components, resistors, capacitors, diodes, triodes integrated circuits, connectors, as well as irregularly shaped components. Besides, AOI machines are very handy in spotting the following defects:
Component faults
Unfitting solder joint problems
PCB faults
Identification faults
Leg-lifting detection
Detecting wrong component placement
Manual vs AOI inspection
Detection Dimensions |
AOI detection |
Manual visual inspection |
Detection accuracy |
Micro-level defect detection and full coverage of 01005 components. |
Recognitionlimited only to 0603 components and larger . |
Detection efficiency |
Ten boards per minute |
Approximately 50 boards per person per hour |
stabilit |
Operates continuously for 24 hours with a false positive rate of less than 2%. |
Due to fatigue and inexperience, the error or misjudgment rate rises to more than 10%. |
Value extension |
Produce SPC reports which will help to trace the root causes of process problems. |
No data accumulation |
FAQ
Q1: What defects can your AOI spot?
KING FIELD : Our AOI can spot major defects such as missing components, misalignment, wrong parts, solder joint problems and PCB defects.
Q2: Is AOI inspection replacing PCB functional testing?
KING FIELD : Definitely not. AOI is complement of electrical test and functional test. So, all of them are necessary and every one of them cannot be excluded.
Q3: Which SMT production stages are involved by your AOI machine in the quality control process?
KING FIELD : AOI can detect insufficient solder and excessive solder defects in the solder paste printing process; AOI may also be used to detect the absence of the components, component misalignment, and incorrect components during the component placement process; AOI is able to detect cold solder joints, false solder joints, and abnormal solder joints faults, besides other problems, at the soldering stage. So, virtually it covers the whole process for quality risk potential.
Q4: What are the main advantages of your 3D AOI machine over a conventional 2D one?
KING FIELD : Our 3D AOI machine can very accurately measure solder paste thickness and component height, and it is better at detecting precision components and complex structures.
Q5: Can your AOI completely get rid of missing defects?
KING FIELD : Absolutely not. Complete removal is impossible here. AOI could help greatly in defect detection but at the same time it can not totally eliminate defect omissions. Several test methods are required.
