Electronics Forum: reverse home plate aperture (Page 2 of 6)

solder balls

Electronics Forum | Thu Jul 12 20:50:37 EDT 2001 | davef

One possible reason no one brought-up "too much paste" is that suggestion has been proffered so many times that it�s in the archives like the layers of sediment making-up Kataden. Another thing [we can argue about this], using home plate apertures w

Tombstoning 0306's

Electronics Forum | Fri Sep 09 14:03:06 EDT 2005 | Mei

Nomorely the V-shape home-plated apertures look like two opening mouth facing each other. But this time just opposite way. And make 30% home-plated. Hope you can understand.

Tombstoning 0306's

Electronics Forum | Fri Sep 09 11:37:27 EDT 2005 | ???

Try home-plated the stencil apertures, and make "V" shape home-plated outside edges of two pads instead of between two pads.

Solder balls

Electronics Forum | Fri Jul 18 16:02:25 EDT 2008 | wrongway

I think Real Chunks has your answer home plat or reverse home plate or like we use a 10% reduction on most aptures vs pad I think your problem is to much paste on the pads we used to see a lot of that with 8mil stencil thicknes on our 1206 caps went

Re: Stencil opening for 0603,0402 ?

Electronics Forum | Mon Jul 20 13:47:04 EDT 1998 | MMurphy

:On a dense board, a great way to reduce solderballing is to either; print paste 1:1 with pad size using a 5mil foil, reduce aperture openings by 10% of pad size or change aperture shape to "Home Plate" design. If none of these work on their own you

Re: That is good advice. (End)

Electronics Forum | Mon Jul 20 19:31:00 EDT 1998 | Eric

| | :On a dense board, a great way to reduce solderballing is to either; print paste 1:1 with pad size using a 5mil foil, reduce aperture openings by 10% of pad size or change aperture shape to "Home Plate" design. If none of these work on their ow

Reflowing a PowerPak SO-8

Electronics Forum | Wed Nov 05 08:49:39 EST 2003 | Axl

You might want to try reducing your stencil aperture by 10% first off; if it still swims try using a home plate design. Also if your profile is going into liquidous to fast, this might cause the swimming as well, check your profile.

Solder beads on small caps and res.

Electronics Forum | Wed Nov 29 14:49:38 EST 2006 | MS

Any recommendation to reduce solder beads next to 0402, 0603 and 0805 caps and res? What about home plate vs. bow tie stencil aperture design?

SOLDER BALLS

Electronics Forum | Wed Apr 29 08:24:55 EDT 2009 | davef

Commonly when we see solder balling, we think "too much paste." As a result, we pinch the apertures or change the shape to a "home plate." We don't think that's what's going on here. But what if this component has a thicker solder plating on its ter

Reliability of U-shape appetures

Electronics Forum | Wed Jul 03 07:29:05 EDT 2002 | jax

Where did you find this article about "U-shape" apertures? I believe it is simply talking about rounded corners on the inside of a normal square aperture. ( resembling a filled in U ). It kinda follows the same ideas behind the home-plate design, wit


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