Electronics Forum | Fri Feb 17 19:23:05 EST 2023 | SMTA-64387083
Read the articles everyone else recommend. I haven't read of them but I will say this. A Solder Mask Defined pad is a copper flood that has much more thermal mass than a Non-Solder Mask Defined pad so it will heat and cool at a slower rate. I suspect
Electronics Forum | Thu Mar 28 15:53:49 EDT 2019 | SMTA-Jon
As a CM, we don’t have a lot of input on the PCB layouts we receive. Some engineers/software packages output the paste layer 1 to 1, some do an across the board reduction, and some set each part up individually with different reductions per footprin
Electronics Forum | Thu Apr 05 08:44:45 EDT 2007 | ck_the_flip
"Guest" is right, actually. CSP's are essentially BGA's, but typically the pitch and ball diameters are much smaller and in some cases, the pads of the CSP's can not be screen printed. If that's the case, you'd have to have flux-dip capabilities on
Electronics Forum | Mon Jun 08 14:19:30 EDT 1998 | Gary Simbulan
Earl, et al, Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. First the caps. We still have
Electronics Forum | Tue Mar 09 18:21:37 EST 1999 | Stan Levitsky
We will wave solder a board with SOIC14 and SOIC16 parts on the bottom. It has been difficult to find any specific wave solder process recommendations from manufacturers of the SOICs. The pad geometry utilizes theiving pads on both sides to reduce br
Electronics Forum | Sun Apr 25 12:05:50 EDT 1999 | Chrys Shea
| | | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free solderin
Electronics Forum | Mon Apr 26 09:18:27 EDT 1999 | C.K.
| | | | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free so
Electronics Forum | Mon Apr 26 09:46:05 EDT 1999 | C.K.
Chrys: I have checked all the basic elements of Wave solder joint formation: fluxing, preheating, and lastly soldering. For checking the fluxer, i used a product from ECD that's very similar to what you desribed called the flux-o-meter. It did a
Electronics Forum | Mon Jun 08 14:52:16 EDT 1998 | Gary Simbulan
| Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. | First the caps. We stil
Electronics Forum | Tue Jun 16 15:01:58 EDT 1998 | Gary Simbulan
There are some common reason for capacitor cracking on my web page if you want to have a look. The document can be downloaded for your reference. | Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior
