Electronics Forum: mid-chip solder balling (Page 5 of 214)

Re: Mid Chip Solder Balls

Electronics Forum | Mon Jan 17 08:09:05 EST 2000 | Mark Anderson

As stated previous, the following elements all have a effect on solder beading. Solder Paste, stencil apertures(reduction of home plate), stencil thickness, printing parameters, placement height, reflow preheat and soaking slope and dwell, manufactur

Re: Mid Chip Solder Balls

Electronics Forum | Fri Jan 14 17:51:37 EST 2000 | Dave F

Dave: Two more things: 1. Let's go backwards, so what changed that suddenly you've realized that "piles of stencils" are causing solder ballig on chips? Are we speeding down the wrong road? Or is this something you lived with and now have decid

How to choose a new solder paste

Electronics Forum | Thu May 26 16:41:00 EDT 2011 | scottp

Here's what I do: - Test Surface Insulation Resistance (we're in the high reliability market and use a test significantly harder than IPC's). I also test SIR in combination with other assembly materials like conformal coatings and wave solder flux

solder balls

Electronics Forum | Wed Feb 07 16:14:54 EST 2001 | Antonio

I've recently read a posting here which said that the person was trying to reduce solder balls. One of the things the person had done was to adjust the reflow profile so as to be hotter and longer in the reflow state. Am I wrong here? I thought th

solder balls

Electronics Forum | Fri Jul 06 18:17:34 EDT 2001 | davef

We find no solder balls after washing our boards. It works GREAT!!! ;-) Probably more to the point, look at "Circuits Assembly" 7/01, p 40, "Eliminating Solder Beads In No-Clean PCBs". "Solder mask type & composition are the greatest contributor t

solder balls

Electronics Forum | Mon Jul 16 19:27:27 EDT 2001 | eliishee

I have no choice, as per customer's request to remove the solder balls. Can i use water to clean away the solder ball since i'm using RMA solder paste not the water soluable paste.

solder balls

Electronics Forum | Mon Jul 16 19:36:09 EDT 2001 | steven

I hv no choice as per customer's request to remove the solder balls. Can i just use water to clean away the solder balls since i'm using RMA solder paste and not the water soluable paste?

solder ball

Electronics Forum | Tue Jun 04 22:54:32 EDT 2002 | davef

Solder balls are one of the most popular topics here on SMTnet. Search the fine SMTnet Archives for background. We like to wash solder balls from the board in our cleaner.

solder balls/wash

Electronics Forum | Thu Jan 09 15:02:40 EST 2020 | emeto

These new inline washers are cleaning so great now. There will be no flux to hold these solder balls at all. However, experts here might help you to get rid of the solder balls in process. so you don't have to clean.

solder balls/wash

Electronics Forum | Thu Jan 09 20:52:02 EST 2020 | Mike Konrad

If the world was a perfect place, I would recommend preventing solder balls in the first place. While low amounts of solder balls are common, a high volume of solder balls are problematic to a cleaning machine (batch or inline). Solder balls may beco


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