Printed Circuit Board Assembly & PCB Design Forum
SMT electronics assembly manufacturing forum.
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We had an order using a 2up PCB (same manufacturer) with sam... - Apr 14, 2008 by Mark M.
I dont know if this is related, but there appears to be a bl... - Apr 14, 2008 by Sr. Tech
Bottom-side SMT parts CAN and DO go liquidus during the 2nd ... - Apr 14, 2008 by Dirk Nuendyke
Contaniminates are always a issue. What chemicals do you ... - Apr 15, 2008 by lellis
If the solder had formed an intermetallic then it couldn't h... - Apr 15, 2008 by MfgEng
We find it curious that: * Heat slug pad for Q19 didn't tak... - Apr 15, 2008 by davef
One issue stated incorrectly was that the work order that ha... - Apr 16, 2008 by Tony SMT
Do you specify copper weight on your boards? This could be ... - Apr 16, 2008 by Hussman
The problem is there wasn't any reflow when the board went t... - Apr 16, 2008 by Tony SMT
deleted: ... - Apr 16, 2008 by Tony SMT
Per Tony SMT Here are more photos: Q15, Q16, Q17 repre... - Apr 16, 2008 by Mark M.
What board finish are you using? Is it the same on both boa... - Apr 16, 2008 by James
And your screen print looks good? ... - Apr 16, 2008 by Real Chunks
Are there any heat sink issues? Re-version of boards with... - Apr 16, 2008 by lellis
This looks like it didn't solder the bottom side completely.... - Apr 16, 2008 by jdengler
Just a thought: if nothing else makes sense, you might want ... - Apr 16, 2008 by Wolfman
[quote]Just a thought: if nothing else makes sense, you migh... - Apr 16, 2008 by lellis
I think you are close to the problem when you expect the pcb... - Apr 16, 2008 by habsfan
Our quality types wouldn't allow: Q16 on "1up good board2.jp... - Apr 17, 2008 by davef
I'd suspect contamination also, possibly from the board supp... - Apr 17, 2008 by Robert