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August 2003

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Subject:
From:
Reuven ROKAH <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sun, 17 Aug 2003 15:25:01 +0300
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70 K $  and more AOI machine is an option.

Best  Regards

ROKAH Reuven




                      Larry Koens
                      <lwkoens@EIMICRO         To:      [log in to unmask]
                      .COM>                    cc:
                      Sent by: TechNet         Subject: [TN] placement verification of uBGA
                      <TechNet@LISTSER
                      V.IPC.ORG>


                      15/08/2003 23:15
                      Please respond
                      to "TechNet
                      E-Mail Forum.";
                      Please respond
                      to Larry Koens





I'm wondering what you all use for placement verification of uBGA? Before
running a new setup, we take a solder sample PCB and put double sided tape
on it. Place the components on the PCB, when its finished the machine
operator hauls the PCB over to the techs for them to Ersa and xray it to
verify placement accuracy of the uBGA. I'm looking for something which
would allow the machine operator to verify the placement themselves.
Purchasing additional Ersa and xray equipment wouldn't be an option. Any
suggestions?

Larry


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