Electronics Forum | Mon Jan 08 10:49:35 EST 2001 | Simon
We are using the omega meters to determine the solvent extract conductivity. The book is refering to standard MIL-P-28809 who specifies a 14 ug/sq. in. of Na/Cl limit. The past owner of our machine was setting the pass/fail limit at 3.6 ug / sq. in.
Electronics Forum | Mon Dec 04 03:40:43 EST 2000 | jmlasserre
Hello, When we discover the broken caps, there are missing and we can observe only either the 2 terminaisons or a small part of ceramic. The defect is due to a shock during the process but it's possible that the caps are fragilized during an operati
Electronics Forum | Wed Nov 15 10:26:54 EST 2000 | Rkevin
I'm looking for what I call Mylar, for lack of a better name. We used it at Digital/Compaq to help us knead paste and also to check alignment of prints without actually applying any paste to the module. It was about 4-5 mils thick, clear and came in
Electronics Forum | Wed Nov 15 10:24:23 EST 2000 | Rkevin
I'm looking for what I call Mylar, for lack of a better name. We used it at Digital/Compaq to help us knead paste and also to check alignment of prints without actually applying any paste to the module. It was about 4-5 mils thick, clear and came in
Electronics Forum | Thu Nov 02 09:45:00 EST 2000 | bierleinb
I would check trace-pad interactions as you may be robbing heat from one of the pads causing uneven heating during reflow. Also, measure paste deposits on trouble parts to see volume depsoted across the pads. You should easily be able to do 0402s w
Electronics Forum | Tue Oct 31 01:08:25 EST 2000 | Dreamsniper
Here are some: Printing Speed : 2.5 ips (inch per sec) Stencil Thickness: 10 - 12 mil but the latter is the best. Dots sizes: u can get that from the Forum Archive...I used Dave F's dot sizes recommendation...they are good! Squeegee Blade : use met
Electronics Forum | Tue Oct 24 15:05:31 EDT 2000 | Steve Thomas
Maybe someone has a good explanation for this, but I'm wondering why your customer would dictate the equipment you use in your process. I thought typically contracts define the quality standards and you decide how to get there....show's you what I k
Electronics Forum | Tue Aug 22 13:19:24 EDT 2000 | Travis Slaughter
Depending on how wrong the pinout is another possibly a little less ugly option would be to bend the wrong pins up then wire them to the correct pads after reflow of the correct pins. You may want to trim the ends of the pins a bit use heat shrink or
Electronics Forum | Thu Aug 17 05:56:39 EDT 2000 | Jacqueline
Hi Folks, Hope yous can help. I'm having a problem when reworking (placing) 40mil BGAs. One side seems to be collapsing more so that the other, resulting in the outer row of balls not properly reflowing and making the connection. This is only happeni
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
.gif)
