Electronics Forum: paste print shifted (Page 2 of 236)

Solder paste shifted from pad

Electronics Forum | Thu Mar 15 19:48:10 EDT 2007 | vshan

how far do you think it should be rgd vshan

QFP area solder paste shifted

Electronics Forum | Wed Sep 19 11:50:02 EDT 2007 | stepheniii

nevermind misread the post. But if the silkscreen is too thick, can you switch to another PCB manufacturer?

QFP area solder paste shifted

Electronics Forum | Wed Sep 19 21:10:16 EDT 2007 | wailiang81

Yupe, if condition keep worst, most probably will re-allocate the PCB manufacturer.

QFP area solder paste shifted

Electronics Forum | Wed Sep 19 21:13:24 EDT 2007 | wailiang81

By vision. Could you elaborate the meaning for "the advertised repeatability for your machine"?

Solder paste shifted from pad

Electronics Forum | Mon Mar 19 07:50:59 EDT 2007 | realchunks

Hi Vshan, If 3 legs are on the pads and 3 legs are off the pads, AND your paste is the same, I'd say your boards are made wrong.

QFP area solder paste shifted

Electronics Forum | Thu Sep 20 07:26:42 EDT 2007 | davef

Jimmy So, it sounds like your stencil and board are made to dissimilar versions. Choices are: * Buy new stencil to match the pads on the board * Tweek position of stencil to better match-up with the pads on board, ignoring the fiducials. You may be a

QFP area solder paste shifted

Electronics Forum | Fri Sep 21 10:31:44 EDT 2007 | russ

this would be meaniung that somewhere in your documantation it should have spec called "repeatability" what this means is that when the vision aligns the stencil/board, the board will always be within "x" amount of the njominal xy "T" position, some

finger print

Electronics Forum | Wed Jan 03 23:00:18 EST 2007 | new guy

I'm a new guy in this field. I have a question about solder paste process. Is there any effect to the solderbility if we do a lot of contact to copper pad without using any insulation ( direct to the finger ). Where can i get information about smt pr

Re: Solder paste print with two thicknesses

Electronics Forum | Wed Nov 01 13:28:41 EST 2000 | Fraser

Thomas, Dave is right - we had a similar coplanarity problem on some BGAs which we solved simply by over printing - no step required by nearly 2 x what happens is that the paste hight will grow as the paste reflows confined by the pad drop me line a

Solder paste print with two thicknesses

Electronics Forum | Wed Oct 07 03:34:11 EDT 1998 | Thomas Blesinger

I am trying to find out, what possibilities I have, to print solder paste on a board, when the task is to have 120 Microns thickness for the biggest part of the board (85% of the real estate), and then have 250 Microns of thickness on the remaining


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