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Your product quality is good is self deception by the SMT manufacturer without X Ray machine

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SMT BGA X Ray machines

Article by Parminder Singh And Joy Rong

We define our SMT process on the basis so many assumptions, starting from Paste printing machine till reflow.
In printer we set our parameters till we get good quality print, similarly for pick and place machine, till all the component is perfectly aligned, and then reflow we set the profile and run the PCB.
And after reflow we do AOI and say perfect joints and start running the production. Wait here is where self deception comes into the picture let me explain? If you see a person with coat, pant and tie do you think he is an intelligent, soft spoken, mild hearted and polite by nature? No until or unless you meet him speak to him and judge his capabilities before that you cannot tell he is a right person or not? More over as the time passes you come to know that he has some good qualities and some bad qualities.

Your product quality is good is self deception by the SMT manufacturer without X Ray machine

Similarly how can you tell by seeing joint from eyes or from AOI that joint is good. Until or unless you do not see what is inside you cannot judge the quality of the joint. Do you think you can assure the quality of the solder joint from naked eye like above example.
More ever your AOI has assured joint is good but after some months in the field you will come to know that few location of the joints are so poor that you start getting field rejections.
The next article, please check original Article:  Your product quality is good is self deception

Family of Industrial X-ray inspection machine & BGA rework station

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Do you want to increase your profits from Production, buy X Ray machine now?

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Do you want to increase your profits from Production, buy X Ray machine now? Article by Parminder Singh Quality is a constant and it cannot be changed for a particular product. Depending upon the application the value of quality constant changes for that very product but still it has fixed value. We can only change the constant “n” to (n-1) which means cheating the customer. SMT Solutions There may be different method or processes used to achieve that quality constant but for a particular application it is fixed. Some method or process may be costly and others may be cheap for the same product, how to identify that, it happens only with the X Ray machine. Like in the process there is a band, upper control limit and lower control limit, similarly cost of the product production also there is a cost band in which this quality constant remains. You have to achieve that cost band to optimum side and profit your organization using X Ray machine and deliver right quality to th
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