Electronics Forum | Mon Jun 07 01:44:11 EDT 1999 | Joe
| | Where I can find some informations about repairing of SMT boards? | | | | Thanks | | | | Marcos | | | A first place to start is IPC's 7711 and 7721 encompasing repair, modification, and rework procedures. | | Earl Moon |
Electronics Forum | Wed Oct 24 18:09:44 EDT 2001 | davef
Allowing the board fabricator to define the board you expect to receive is fine, as long as they do a good job. Regardless of the existence of a clear product definition or not, it�s reasonable for you to argue that your receipts must meet the requi
Electronics Forum | Tue Mar 14 21:22:41 EST 2000 | Dave F
Bingo!!! By panelizing and adding breakaway rails (as Nancy says), Stuart can pour copper up to his board fab's tolerance from the board edge. Traditionally, he just wants to make sure no copper shows on the edge of the board. Then again, it's his
Electronics Forum | Tue Mar 14 21:22:41 EST 2000 | Dave F
Bingo!!! By panelizing and adding breakaway rails (as Nancy says), Stuart can pour copper up to his board fab's tolerance from the board edge. Traditionally, he just wants to make sure no copper shows on the edge of the board. Then again, it's his
Electronics Forum | Wed Aug 19 05:00:56 EDT 1998 | Tom Blum
Hi there, I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In order to
Electronics Forum | Tue Oct 27 13:56:36 EDT 2009 | julie331975
I work for a CEM. We are having some quality issues with some pcb's that came from China. (I know, big surprise) Can anyone with pcb manufacturing experience look at some pictures I have and give me an opinion as to what could go wrong in the pcb man
Electronics Forum | Tue Feb 28 20:56:12 EST 2006 | davef
Here you go ... PCB FR-4 Inspection Manual 1 Introduction This defines the minimum acceptability requirements. It is not intended for use as a performance specification for the Company or procurement. It is based on the requirements of Acceptabi
Electronics Forum | Thu Jul 29 15:35:05 EDT 1999 | Earl Moon
| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou
Electronics Forum | Fri Apr 16 17:19:59 EDT 1999 | Dave F
| | Hi, | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .030"
Electronics Forum | Mon Jun 08 13:26:59 EDT 1998 | D.Hammond
I work QA at an OEM in Alberta, Canada. I saw earlier posts on the smtnet regarding PCB haloing criteria. I am currently in a dispute with my PCB vendor over the acceptability of haloing (delamination) around plated through holes and vias on a lot of
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