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Ball Grid Array (BGA) component Incoming Inspection IPC-7095
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Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
Ball Grid Array (BGA) component Incoming Inspection IPC-7095
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Some Related Topic Tags
ball grid array (bga), ipc-7095, visual inspection, incoming inspection (also see receiving inspection)
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  Post Number #1  
Old 25th January 2008, 01:22 AM
guru1000000

 
 
Total Posts: 11
Ball Grid Array (BGA) component Incoming Inspection IPC-7095

Questions regarding IPC-7095

Hi, im currently working on the incoming visual inspection for BGA too.
With reference from IPC-7095, i have written regarding the things to check for BGA components (before assembly)

1)Ball Size -> checking on ball diameter
2)Ball Void
3)Missing ball
4)Ball pitch
5)Ball coplanarity
6)Package stand-off height, mounting height, flatness

Will this cover everything to check on BGA package?

Also, IPC-7095 include check of ball shape which i interpret as ball deformity.
Is there a specs for it?
My director is concerned that having a deform might cause a short between solder balls. However, i feel if it is deform, it will fail both the diameter and pitch requirement. Wont the gurus here agree to it too?

I have asked the experts in my company whether deformity will cause a short, which they do not think so since there will be a reflow later on. Only issue is whether there will be enough solder paste for the connection during reflow. However, looking at IPC-7095 and Jedec specs for all types of BGAs, there is no specs for the ball height, only the stand-off height specs is give.
Anyone knows whether ball height is measured during incoming visual inspection and is there reference specs for ball height which is similar to those specified in eg.Jedec-Mo-149?

Thanks in advance.

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  Post Number #2  
Old 25th January 2008, 03:10 AM
Ajit Basrur's Avatar
Ajit Basrur

 
 
Total Posts: 6,200
Re: BGA component Incoming Inspection IPC-7095

Hi guru1000000,

Firstly I am not at all from this area so do not know if my response would be appropriate for you.

BGA stands for Ball Grid Array.

I did some googling and found
The Latest in BGA Implementation Strategy ; hope would be useful to you.
Thank You to Ajit Basrur for your informative Post and/or Attachment!
  Post Number #3  
Old 26th January 2008, 07:18 AM
guru1000000

 
 
Total Posts: 11
Re: Ball Grid Array (BGA) component Incoming Inspection IPC-7095

Hi,

thanks for the help. The information has more to do with BGA balls after soldering while im looking for visual inspection of the BGA packages before assembly. Anyway, thank you
  Post Number #4  
Old 5th April 2017, 03:19 AM
soldertraining

 
 
Total Posts: 17
Quid Pro Quo Re: Ball Grid Array (BGA) component Incoming Inspection IPC-7095

IPC-7095A is probably the most comprehensive section on voiding within the BGA ball. Most BGA X-ray inspection systems have some means of measuring voids within the BGA. IPC-7095A (www.solder.net) devotes an entire section to BGA voids, and above which manufacturers should consider the voids to be quality and process-control liabilities.
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