Electronics Forum | Mon Jan 27 07:28:24 EST 2020 | dontfeedphils
If I'm remembering correctly, I just had a board shop I worked with supply me with a 20"x20" copper laminated piece of FR4 and used that. I believe I only used it once before I left that company, so I'm not sure how well it holds up over time.
Electronics Forum | Tue Feb 13 16:28:17 EST 2007 | rob_thomas
There are solder pastes that seem to give you less voiding. Currently we are using Kester ,water soluble paste that gives us pretty good results on BGA's up to 0.5mm pitch. Stencil design was a challenge but we are getting consistent results . Here
Electronics Forum | Wed Dec 17 08:47:18 EST 2014 | cloughley
What are the added capabilites going from 7w to 20w, 355nm YAG laser I wanted to know what the added capabilities we now have are going from a 7w to 20w, 355nm YAG laser. Currently we support the following materials: http://www.bestlaser.net/mater
Electronics Forum | Tue Apr 27 15:18:13 EDT 2004 | Claude_Couture
No offence, but have you ever used a soldering iron? The usage dictates the shape you need. small pads require small tips, big pads require big tips. Then you have chisel tips, cone tips, etc... that is to your preference or what you feel more comfor
Electronics Forum | Thu Sep 30 18:23:00 EDT 2004 | russ
Comment: A 20 mil pad for a .5mm pitch BGA? That seems like an awful large pad for this device. If my math is right the pads will be basically touching each other. .5mm = .020". I would think that you have something else. You cannot have a 22mil
Electronics Forum | Wed Nov 21 14:53:44 EST 2001 | mparker
All it takes is an agreement signed by the employee upon date of hire. The employee is issued tools to do their job. They sign a document that lists the tooling inventory and replacement costs, stipulating that the employee is responsible for the too
Electronics Forum | Thu Mar 01 17:45:26 EST 2018 | spoiltforchoice
However the OP is talking about a machine that replaces a placement nozzle with a dispense head. This is a $20k upgrade that runs at a fraction of the speed an inline stencil printer or Mycronic dedicated dispensing machine. Essemtec offer a similar
Electronics Forum | Wed Nov 10 12:13:53 EST 1999 | Wolfgang Busko
That�s what we consider to be practical if the 20% were the worst case we see but the reality looks different. By chance we get a -20%, sometimes worse, sometimes a "good" 10%, rarely does it hit the nominal value and never it�s a +%. In short: It lo
Electronics Forum | Tue Aug 22 08:15:34 EDT 2000 | Mark
I have a customer that has a wrong pin out on a TSOP32. The Raw PCB is expensive, "time to market concerns", and respin lead times are forcing an alternative solution. He would like to design a "conversion" daughter board with the correct pin out to
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
