Electronics Forum: past (Page 275 of 989)

BGA ball and PCB pad

Electronics Forum | Fri Feb 27 11:33:32 EST 2004 | Bryan

Very strange question,but interesting.Is there anyone who have conducted any experiments to figure out the results?I made a profile board,one thermal couple on pad and other one drilled into the ball of BGA.the 2 points are perpendicular to conveyor

No Lead BGA Hot Gas Rework

Electronics Forum | Mon Apr 12 19:22:54 EDT 2004 | russ

So if I get this right, your customer wants you to run this product as pb free even though it is not. In order to run this as pb free you need to run pb free paste. If you use 63/37 paste at the higher temps I believe that in addition to the compon

Water Soluble for No Clean BGA Balls

Electronics Forum | Tue Apr 13 15:44:41 EDT 2004 | Dreamsniper

Hi Guys, Thanks for all your informative replies. I do know that Motorola is using a No Clean Eutectic Solder for their BGA's. We are in Aerospace and is using a Water Soluble Paste Flux. Now, a) Can anyone explain to me about the effect of thei

Indium NC-SMQ92J paste problems

Electronics Forum | Mon May 17 02:06:57 EDT 2004 | johnwnz

Look here: _a class=roll > href="http://www.aimsolder.com/techarticles/tech%2 > 0sheet%20BGA%20voiding-%20reducing%20through%20pro > cess%20optimization.pdf" > target="_blank"_http://www.aimsolder.com/techartic > les/tech%20sheet%20BGA%20voidin

Volume of paste deposited with respect to board thickness

Electronics Forum | Tue Jun 01 07:26:55 EDT 2004 | johnwnz

Alistair, your paste deposit is controlled by a few things: Stencil thickness Squeegee pressure Squeegee speed Print gap in 99 out of 100 applications for paste printing you would have a print gap of 0 i.e. on contact printing where the PCB is in fu

Rheometric Pump - Yes or No???

Electronics Forum | Mon Jun 27 14:15:23 EDT 2005 | Bob R.

We have a couple sites (out of over 150 lines) that use them. The site that picked them stands by them through thick and thin. Any time they have problems they blame it on the paste, even though paste from the same lot will be running great next do

Very fishy missing solder paste issue

Electronics Forum | Wed Jul 20 16:08:34 EDT 2005 | grantp

Hi, I think the comment about the board height is because the MYDATA checks the board height each time it loads a tool so this is eliminated from being an issue because the machine knows the PCB height. I don't think it's so much what height the PCB

AIM SN100C Solder paste

Electronics Forum | Fri Apr 07 17:44:07 EDT 2006 | ratsalad

I still have half of a 500 g jar of this paste left. I'm going to give it another shot, but my first experience was not so wonderful. Everything was great until we reflowed it. Our profile matched AIM's recommendation, as far as I can see. The ch

Solder Bridging on Nexlev Connector

Electronics Forum | Tue May 09 22:57:58 EDT 2006 | davef

The NexLev connector is built in a stripline construction, providing a continuous ground plane for each signal contact. The connectors come as tenrow connectors with 100, 200, or 300 positions at possible stacking heights from 10 mm to 30 mm. Technic

what kind of void test do u perform in paste industry

Electronics Forum | Fri Jun 16 11:37:15 EDT 2006 | docker

I�m working in Solder paste manufacturing industry and my customer has complained the void issue on BGA pad. I�m internally conducting the void test on BGA pad in my Lab. I used OSP furnish board with Sn/Pb and /or lead free component using Lead free


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