Electronics Forum: dfm and dave (Page 1 of 23)

Re: Solder cream kits (flux and powder separately)

Electronics Forum | Sun Mar 05 13:02:00 EST 2000 | dave

We used this type of paste in a fine pitch application for over two years with no problems. You must be very careful of any (dust)or spillage while mixing for obvious reasons. In my opion the very thing that makes it interesting "freshness" is also i

Re: Solder cream kits (flux and powder separately)

Electronics Forum | Sun Mar 05 13:02:00 EST 2000 | dave

We used this type of paste in a fine pitch application for over two years with no problems. You must be very careful of any (dust)or spillage while mixing for obvious reasons. In my opion the very thing that makes it interesting "freshness" is also i

wave soldering surface mount tantalum and ceramic capacitors

Electronics Forum | Thu Feb 04 09:09:07 EST 1999 | dave

Can anyone help me with the pros and cons of trying to wave solder tantalum and large (1812) ceramic capacitors. I do know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what problems I c

DFM for Wave

Electronics Forum | Mon Jul 10 08:51:08 EDT 2006 | dave

Hi All, I am looking for some DFM for wave process. Is there IPC standard ?

DFM for Wave

Electronics Forum | Tue Jul 18 05:41:39 EDT 2006 | dave

Hi Russ, Thanks for the info.

DFM for Wave

Electronics Forum | Tue Jul 18 09:36:05 EDT 2006 | dave

Guys, what about hole to lead size? is it lead size + 0.010' + tolerance

DFM for Wave

Electronics Forum | Mon Jul 17 16:38:41 EDT 2006 | dave

Guys, My problem is that I have a 10 up panel and I have to use a selective pallet to run it thru the wave process due to SMT on bottomside. However the yields are very poor. We have done everything to improve them with some good improvements along

SMT Processing and gasketing

Electronics Forum | Tue Nov 11 16:30:08 EST 2008 | naynayno

Occasionally solder mask thickness is believed to be the cause of gasketing challenges during paste printing. We currently specific IPC-SM-840 on our fab drawings but this provides no limits or guidelines on thickness. I do not want to cause an unr

What is the preffered spacing between PTH and SMT pads

Electronics Forum | Thu Apr 30 05:54:41 EDT 2009 | davepick

Michael, There are so many factors involved that mean a definitive number is extremely difficult - if not possible. I recommend you speak with Tony Wilson. He has been in the industry for over 25 years and reccently done PhD work on modeling failure

ITAR and AS9100...like peas and carrots?

Electronics Forum | Thu Feb 24 14:56:15 EST 2011 | jameskelch

Thanks Dave!

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