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PCB manufacturing defects

alandaniel132

New Member
During the manufacturing of 10,000 units, there are 10% defects.
As an electronics test engineer, what can I do to solve this issue?
 

JimB

Super Moderator
Most Helpful Member
The first thing would be to make some kind of a table which lists the defects.
Until you know what the defects are, there is no way to find a solution.

Typical problems could be:

Poor design
Incorrect assembly
Faulty components from the suppliers
Faults caused by poor testing techniques or faulty test equipment.

JimB
 

For The Popcorn

Active Member
Seems to me (and I should think anyone qualified to be in that position), the first step is to investigate how the "units" are failing.

Are the pcbs failing? Open or shorted tracks?
[How could you tell? If the board itself is the problem, why and how do you remedy the problem?]

Is there an assembly issue?
[Same question as above.]

Is there a component issue?
[Defective, counterfeit, use of different parts than specified?]

Is there a flaw in the circuit design?

Is there a board layout issue?

After that, the possible causes are endless.....


I suggest searching for "edn tales from the cube" and reading every one of them to gain a tiny bit of understanding about what you've asked.
 

alandaniel132

New Member
Seems to me (and I should think anyone qualified to be in that position), the first step is to investigate how the "units" are failing.

Are the pcbs failing? Open or shorted tracks?
[How could you tell? If the board itself is the problem, why and how do you remedy the problem?]

Is there an assembly issue?
[Same question as above.]

Is there a component issue?
[Defective, counterfeit, use of different parts than specified?]

Is there a flaw in the circuit design?

Is there a board layout issue?

After that, the possible causes are endless.....


I suggest searching for "edn tales from the cube" and reading every one of them to gain a tiny bit of understanding about what you've asked.
What is the meaning of ""edn tales from the cube"?

Thank you
 

alandaniel132

New Member
The first thing would be to make some kind of a table which lists the defects.
Until you know what the defects are, there is no way to find a solution.

Typical problems could be:

Poor design
Incorrect assembly
Faulty components from the suppliers
Faults caused by poor testing techniques or faulty test equipment.

JimB
Thank you.

Is there any standard guidelines or standard protocol to follow for this process?
 

For The Popcorn

Active Member
What is the meaning of ""edn tales from the cube"?

Perhaps you don't have the proper mindset for the position you seek. If you ask "what's that?" rather than having the initiative to to take a look for yourself ("I suggest searching for "edn tales from the cube" and reading every one of them,"), you're not going to do much good trying to solve problems.
 

alandaniel132

New Member
Perhaps you don't have the proper mindset for the position you seek. If you ask "what's that?" rather than having the initiative to to take a look for yourself ("I suggest searching for "edn tales from the cube" and reading every one of them,"), you're not going to do much good trying to solve problems.
I did search for "edn tales from the cube"

What is this phase meaning?
EDN : EDN is an electronics industry website and formerly a magazine

That is not related to the questons.
 

For The Popcorn

Active Member
What are Tales From The Cube about? What are you being asked to do? If you don't see the relationship, the job is not right for you.
 

ronsimpson

Well-Known Member
Most Helpful Member
There are many things to do.
First go to the company that makes the boards and ask them. Chances they know more than you do. They will want to see examples of "defects".
 

eTech

Well-Known Member
During the manufacturing of 10,000 units, there are 10% defects.
As an electronics test engineer, what can I do to solve this issue?
If you are referring to PCB fabrication defects, then...
Establish an "acceptable quality level" (AQL) to be used by your PCB receiving Inspection department. Then hold the PCB fabrication company accountable to it. The AQL is usually established by your company through collaboration between production manufacturing, quality control, and engineering. Once an AQL is established, it must be agreed to by the PCB Supplier to enable them to be a "supplier". In my day our AQL was 1%.
 

alandaniel132

New Member
If you are referring to PCB fabrication defects, then...
Establish an "acceptable quality level" (AQL) to be used by your PCB receiving Inspection department. Then hold the PCB fabrication company accountable to it. The AQL is usually established by your company through collaboration between production manufacturing, quality control, and engineering. Once an AQL is established, it must be agreed to by the PCB Supplier to enable them to be a "supplier". In my day our AQL was 1%.
Thank you and very infomative.
We should help each other and share knowledge. Thank you
 

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