Electronics Forum: mid-chip solder balling (Page 6 of 214)

solder balls

Electronics Forum | Mon Jul 16 09:04:00 EDT 2001 | Hussman

No argument here. But I've don't think I've ever seen solder balls on 0402s. Even when they're placed on narrow G dimension pads, where there is little toe fillet, I've never seen a solder ball. But your idea of reversed homeplates would work grea

solder ball

Electronics Forum | Tue Dec 31 02:04:19 EST 2019 | sssamw

From the picture, I cannot see clearly solder ball violate electrical clearance or cause a short, maybe it is. What I can see is the solder paste has some misalignment although it doesn't printed in solder mask area, but actual position will reduce

solder balls

Electronics Forum | Mon Jul 16 15:49:33 EDT 2001 | Steve

The solder balls you are talking about are caused by too much paste. Reduce the size of the stencil aperatures. Concerning removing the solder balls, the first thing you need to ask yourself is, do I need to remove them. IPC-610, 12.4.10 states, "Ac

solder ball

Electronics Forum | agoesfirmanto |

Tue Dec 31 01:52:49 EST 2019

solder ball

Electronics Forum | Wed Jan 01 22:19:33 EST 2020 | sssamw

Solder ball attached on solder joint without violation minimum electrical clearance is acceptable. If your process parameter including stencil not changed, suggest you check if solder pasted being pushed out after IC placement, also check if solder j

solder ball

Electronics Forum | Tue Dec 31 02:06:21 EST 2019 | sssamw

Yes, from the picture, it seems the gap between solder pad is very small, easy to have solder ball/solder bridge.

solder balls

Electronics Forum | Thu Jul 05 07:34:57 EDT 2001 | steven

what is the main reasons that casuing solder ball during reflow? and how to remove them? (mostly arround the connector leads or between the 2 0402 chips). solder paste is RMA type. need advise. thanks

solder balls

Electronics Forum | Thu May 06 10:28:27 EDT 2004 | Bryan She

Modify your stencil aperture shape...reduce the solder paste deposited on pad,will reduce the solder balls.Be sure your reflow profile are good before doing this.rising slope is very important. This is my opinion.thanks. Bryan

solder ball

Electronics Forum | Tue Dec 31 01:30:07 EST 2019 | sssamw

Do you have clear pictures show IC soldering and the solder ball? DO you have clear picture show the PCB pad?

solder balls

Electronics Forum | Thu Jul 05 09:27:05 EDT 2001 | blnorman

Our solder ball problem is linked to moisture. If the paste sits on the board too long (especially during our humid summer months) we experience the problem. As far as the problem being specific to components or areas of the board, maybe some of th

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