Electronics Forum | Tue Jul 06 00:23:11 EDT 2010 | cksam
I am doing the case study of the component chip 0201 tombstoning problem. The significant causes was the reflow profiling preheat slope or ramp up rate. I really can't differential between preheat slope and ramp up rate. Could anyone here show me the
Electronics Forum | Tue Dec 12 08:44:27 EST 2000 | Wolfgang Busko
Another theory just developed in this very moment is that the glue did for what reason ever become "liquid" to a certain degree allowing gravity to do what gravity normally does but only to a certain point where this bubble-gum-like state stopped ( w
Electronics Forum | Mon Dec 11 03:46:14 EST 2000 | JohnW
I have to say I've never heard of anything tombstoning over wave, I've seen issues where the glue dot is too high or off to one side creating a poorly seated component that has too big a gap between pad and endcap(and hence an open), but never a tomb
Electronics Forum | Thu Jul 15 14:01:15 EDT 2004 | nanref
WERW HAVING PROBLEM IN OUR PRODUCT SINCE WE STARTED USING A LEADFREE SOLDER PASTE..REJECTS OF TOMBSTONING IS SO ERRATIC...HOPE YOU CAN GIVE SOME INPUTS HOW TO CONTROL THIS..WHAT IS THE POSSIBLE CAUSE?THANKS
Electronics Forum | Wed Dec 13 06:08:48 EST 2000 | jackofalltrades
We have seen this type of problem. After eliminating possibility after possibility we corrected the problem by throwing out the glue and starting fresh. It was not expired, just bad for whatever reason, we could not asertain what went wrong with it.
Electronics Forum | Tue Dec 12 08:53:40 EST 2000 | Wolfgang Busko
I�m with ya both. I�m wondering why the hell those buggers didn�t just drop and started a new career mingling with the dross in the pot. If only a few for statistical reason and to confuse us all just showed this strange behavior and the majority de
Electronics Forum | Tue Jun 07 05:21:35 EDT 2011 | lisalau
Can anybody tell me what is a Tray Unit?Who can show me a picture indicating the place of the Tray Unit? Thanks thanks!!millions of thanks! Lisa
Electronics Forum | Tue Jun 07 10:45:17 EDT 2011 | davef
For pictures of a tray unit: * Go here http://eam.go-dove.com/salefiles/2313/2313_577.pdf * Scroll to Page 3 * Page down to the bottom of the page ... there are two pictures of placement machines with tray units attached Here's another unit that's
Electronics Forum | Sat Oct 13 19:28:10 EDT 2018 | SMTA-Jeff
can anybody recommend ERP software that fits this business?
Electronics Forum | Thu Jan 24 09:13:35 EST 2019 | protokos
Hi i use dollibar now for over 3 years and its doing fine. for me.
