Electronics Forum | Mon Jun 29 13:50:48 EDT 1998 | Russ Miculich
| WHAT SHOULD THE RATIO BE OF STENCIL APERATURE TO PAD TO GET GOOD QUALITY RESULTS. BY THAT I MEAN, A MINIMM OF SOLDER BALLS, AND LITTLE TO NO BRIDGING, SHORTS, ETC.. | RIGHT NOW WE ARE USING A 1:1 RATIO, BUT ARE INVESTIGATING REDUCING THE APERATU
Electronics Forum | Sat Jun 30 04:43:09 EDT 2001 | brendan
Hello We introduced OSP finish on some of our products but now need to add some discretes at the end of the process. From my little knowledge of OSP, this is difficult. We'll SMT the boards and transfer them to another site for further processing.
Electronics Forum | Thu Jun 29 09:29:46 EDT 2000 | JAX
sree, You might want to check the archives. If not, I found this just a few questions below yours!! [Back to thread listing at top] Posted by Igmar on June 22, 2000 at 10:27:26 AM EST Can someone please help with the aperture size on a Micro BGA st
Electronics Forum | Tue Dec 13 12:46:15 EST 2005 | Slaine
We came across a manufacturer selling us a part that they Classed as RoHS compliant. On further investigations the part was found to contain lead, we use an XRF. The content was over 85% so was exempt and therfor compliant(HMP solder), until we solde
Electronics Forum | Sun Feb 10 16:35:06 EST 2008 | neocera
Hi, I have a PCB with a blown PMIC (power management integrated circuit) multi voltage regulator IC. The PCB is rather rare and I need to replace the PMIC, its footprint is 7mm X 7mm with 12 solder points per side. Unfortunately I can only solder th
Electronics Forum | Wed Oct 06 04:23:09 EDT 1999 | Brian
| | I am a new employee at a company that has had a large turnover of employees over the past year. I am working on a board (components on one side only), the engineer (he is also new ) wants to use an .035 pad with a .021 dia. hole, there are no via
Electronics Forum | Thu Apr 17 10:44:24 EDT 2008 | rculpepp
I'd suspect contamination also, possibly from the board supplier. Sr. Tech's post mentioned what looks like a blister on the board, in the upper right of the Q19 photo. This could very well be a contaminate from the PWB fab shop. I've seen similar pr
Electronics Forum | Thu Oct 27 06:05:50 EDT 2022 | angela t
SMT chip processing short-circuit bad phenomenon mostly in the fine pitch IC pins, mostly in the 0.5mm and the following pitch between the IC pins, because its spacing is small, improperly designed template or printing a slight omission is very easy
Electronics Forum | Sat Jul 17 13:25:02 EDT 1999 | Scott
| | | | | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | | | | | | | What is it you're tr
Electronics Forum | Wed Aug 18 09:41:47 EDT 2010 | namruht
Are you controlling humidity in your plant? I'm > not familiar with that particular paste, but some > pastes are sensitive to a humid environment. We > also had one paste supplier send us a batch that > had excessive solder balls if the boards
