Electronics Forum | Thu Sep 01 09:05:47 EDT 2005 | russ
Thermal pads located underneath leadless devices require a 50% reduction in the stencil aperture.
Electronics Forum | Wed Aug 31 12:49:04 EDT 2005 | kmeline
I have been having the same problem with the LLP. I have three stencil I have done reduction on. The first I went by the manufacturing recommendations. The last two I have done more reducing for the thermal pad. The last one was at a 20% reduction an
Electronics Forum | Thu Sep 11 15:23:31 EDT 2003 | Peter L.
I have come across a rash of failed assemblies that have 0805 capacitors and resistors, bottom side glued, wave soldered and washed. Trouble shooter reported touching up the solder joints on a few areas and the boards would pass test. I had a look a
Electronics Forum | Mon Apr 01 19:12:16 EST 2002 | Mike Konrad
�Cheap� is relevant. Is $ 3,500 for equipment cheap or expensive? If $ 3,500 is cheap, than we have a solution for you. If $ 3,500 is expensive, then purchase pre-saturated chemical wipes, latex gloves and a hazardous waste bin. As for �effective
Electronics Forum | Mon Apr 01 20:25:48 EST 2002 | davef
Stop!!! Whoa!!! Time-aut You have equipment like "Siemens 80S & 80F, Sanyo TCM 3000 and GSM" and you're not going to convince people to clean the ever lovin' bejuice out of your stencils? You're thinking handy-wipes are going to get it done? Wha
Electronics Forum | Mon Oct 17 11:16:09 EDT 2005 | slthomas
There are a lot of things that might affect your cleaning efficiency. Paste type (no clean or w/s?), cleaning chemistry, aperture aspect ratio (aperture width/stencil thickness), "linty" wipes, etc. Another thing you need to look at is the frequency
Electronics Forum | Tue Apr 02 13:35:02 EST 2002 | Mike Konrad
Hi Dave, God no! I am not suggesting that anyone should clean stencils by hand. My answer was facetious. The questioner asked is there was a �cheap and effective� way of cleaning stencils without purchasing equipment. Cleaning stencils by hand m
Electronics Forum | Fri Dec 07 01:17:50 EST 2001 | Mike Konrad
The best suggestion one can offer is to view the archive section of this site. It is full of discussions, suggestions, advertising, claims, counter-claims, etc. Just search under the words �stencil cleaning�. Mike Konrad www.aqueoustech.com konrad
Electronics Forum | Fri Oct 21 14:13:08 EDT 2005 | mafc65
1.- Clean bottom and top stencil with a cloth/alcohol at same time.Pay special attention to fine pitch locations. 2.- Clean again bottom stencil side .To prevent any residual of solder 3.- Blow air with a air gun under the stencil to remove the solde
Electronics Forum | Fri Jul 20 13:50:22 EDT 2018 | vchauhan
This question is regarding stencil design: I am having voids under QFN TI P/N LMZ20502SILT. I have attached component pic. Signal pin is 18X16 mils. Center pads are 31 mil sq. Initially I had stencil done with one mil per side reduction on signal pad
