Electronics Forum | Wed Jul 23 08:21:55 EDT 2003 | James
Here we go again. I tried changing paste and that did nothing. Literally solder balled up and flew to the next pad. What would be a short term fix to use up all baards with white tin. Is there a fix if the board house did not manufacturer the boards
Electronics Forum | Tue Sep 28 05:04:10 EDT 2004 | grayman
In obtaining almost zero defect in solder wave. I would like to suggest the following: First,We must consider changing machine if it is more than 5 years old. second, use the right tools for the right job. Most of the traditional engineers will us
Electronics Forum | Mon May 14 13:33:36 EDT 2007 | jax
Solderability!!! The CM in question has probably seen too many solder problems with White Tin in the past. We have had the same issues. To save us from spending too much time and money(verifying pure Tin plating thickness, Chemical leaching from th
Electronics Forum | Fri May 11 10:30:26 EDT 2001 | rkevin
I am looking for info. (pro and con) and/or 1st hand knowledge processing PCB's with Immersion Tin finish through SMT and Wave. Do profiles need to be different? Solderpaste considerations? Anything else? In the past I have experienced selective non
Electronics Forum | Tue Apr 07 05:46:15 EDT 1998 | bob willis
| we are looking for paste printing specs.& stencils holes shapes to | perform soldering reliability d.o.e. of the a.m. | subject. | looking forward to your info. | tech. dept. /telrad prod. For information on PIHR soldering there is a report, vid
Electronics Forum | Thu Apr 01 12:05:21 EST 2004 | babe
Heat guns scare me, hot air scares me too. Just the heck of it why not apply high temp paste to the center and eutectic 63/37 standard solder to the outside pads. The outside reflows first allowing proper seating of the component and with a proper pr
Electronics Forum | Wed Nov 20 09:23:53 EST 2019 | alpha1
We had a board we fought with for a while with solder balls. Checked everything, Stencil thickness at .004, reduced apertures, changed paste 3 times, changed profile 3 times. Finally changed board vendors. Went from HASL to Emersion Gold. Problem sol
Electronics Forum | Wed Jan 21 12:06:48 EST 2004 | Claude
What is the most effecient form of heating ,ie calrod, IR, convection , or a mixture ? to produce a good thermal profile on a wavesoldering system on thermally challenging multi-layered boards? Thanks, Adam Adam, I agree with Pete C. Forced co
Electronics Forum | Tue Feb 21 01:32:49 EST 2017 | soldertraining
Looking for advice on soldering lead free paste to a board with very heavy gold plating, In my opinion, Gold contact surfaces are often used on circuit boards with membrane switches which is a choice of technology for industrial, commercial and consu
Electronics Forum | Wed Jun 18 16:03:03 EDT 2003 | mkehoe
Orrrrr, just buy a small reflow oven, 5K to 7K, and eliminate the paste printing by using solid solder deposition. No shorts, no opens, no cleaning, and no voids. www.sipad.com If you decide to print your own paste later you can invest the extra 30
