Electronics Forum: footprints (Page 1 of 41)

Package outlines and footprints

Electronics Forum | Sat Jun 12 10:59:59 EDT 1999 | WillyW

Is there public domain information available on standard surface mount package outlines and footprints? Thanks, WillyW

BGA/Fine pitch footprints

Electronics Forum | Tue Mar 02 10:19:41 EST 2004 | loz

Hi all, we have recently seen a design that consists off a QFP100, pitch at 25". Also in the centre of this footprint is a FBGA165 footprint, pad size .4mm @ 1mm pitch. We have been informed that we will fit the QFP. I want to remove the BGA pads fr

BGA/Fine pitch footprints

Electronics Forum | Tue Mar 02 10:24:06 EST 2004 | russ

I have done this before, We print with a 5-6mil stencil and have had no problems with any underneath solder. If you are still nervous instead of removing from stencil use some 3 mil kapton tape or equivelant and tape off the BGA pads. This way the

BGA/Fine pitch footprints

Electronics Forum | Thu Mar 04 20:15:51 EST 2004 | davef

Print paste in the holes you don't plan to use and let it dry. That way you don't affect your paste volume in other apertures. The bad news: When you don't want paste to dry and close your apertures, it will do it. When you want paste to dry and

Re: Package outlines and footprints

Electronics Forum | Sat Jun 12 16:24:02 EDT 1999 | JohnW

| Is there public domain information available on standard surface mount package outlines and footprints? | Thanks, | WillyW | Willy, The IPC has a great listing for the std packages and footprints, as do most component manufacturers. I'd start on

Combining two similar footprints - absolute no, or might work - tips to improve odds?

Electronics Forum | Tue Apr 15 16:07:18 EDT 2014 | rway

Rather than using an over-lay of both pads, I would just stay with a rectangle pad shape, a little wider to accommodate both footprints. Keep it simple.

Combining two similar footprints - absolute no, or might work - tips to improve odds?

Electronics Forum | Tue Apr 15 14:19:19 EDT 2014 | horchak

This does not look difficult. It appears the rectangle of proper size and spacing would work for both, or even a square pad. Don't make it more difficult than it should be. But then I could be missing something?

Combining two similar footprints - absolute no, or might work - tips to improve odds?

Electronics Forum | Mon Apr 14 17:38:18 EDT 2014 | bradlevy

I've got a small smt board I've already got working prototypes of, which uses a tactile switch. I've got another much less expensive tact switch of similar size that I had avoided due to a difference in actuators I originally had no way around. Now I

Combining two similar footprints - absolute no, or might work - tips to improve odds?

Electronics Forum | Tue Apr 15 15:12:50 EDT 2014 | bradlevy

Thanks Bob. I just didn't have enough experience with production SMT (vs hand-soldered prototypes) to know how finicky some things like this are. I've tried to do a lot of reading, but I haven't seen much that talks about things like this. I also hav

footprint max505

Electronics Forum | Wed Mar 11 06:04:39 EST 1998 | WIM CLASSENS

I'm designing in a MAX505 but i can't find the footprint for this device

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