Electronics Forum | Fri Jul 22 07:21:14 EDT 2005 | Mark
Try using Cobar`s anti-tombstone alloy.
Electronics Forum | Tue Jul 05 13:54:35 EDT 2005 | Sandeep
We are facing lot of problems with tombstoning in 0201 components. Ironically tomstoning in these components is not occuring while reflow but it is happening when we subject them to thermal cycling test. We have been investigating the cause and thoug
Electronics Forum | Tue Jul 05 15:21:46 EDT 2005 | russ
So your thermal cycling test is putting these solder joints into reflow (183C + if they are lead joints)? Must be quite the test! Tell us what pad sizing and spacing you are currently using.
Electronics Forum | Fri Jul 29 19:12:30 EDT 2005 | Jason Fullerton
In the true sense of the term, tombstoning can only occur during reflow. Now, if your solder joints are cracking during thermal cycling and opening on one end you still have a problem - it just isn't "tombstoning". What laminate are you using on yo
Electronics Forum | Fri Jun 22 11:54:47 EDT 2001 | jdtpfacreate
OEM Boy, This is an excellent question. Since I am on the "I-want-to-sell-you-equipment-side" I do not have the hands-on experience that you do but, I do have a many engineers back at our factory who have dedicated their lives to these issues.
Electronics Forum | Thu Jun 14 23:21:30 EDT 2001 | oem boy
I am working on 0201 development for my company in the UK, and I am planning a rather extensive DOE for my reflow oven profile. I am planning on studying various ramp rates, soak times, times above liquidus, peak temps, etc... My biggest concern
Electronics Forum | Thu Apr 11 20:35:22 EDT 2002 | davef
Messy. Messy. Messy. Consider gluing these components, until you control your process. It is unclear to us that a single factor drives these defects, but multiple factors that need to be tuned to work well together. PAD DIMENSIONS * Some SM-782 pa
Electronics Forum | Sat Sep 11 13:45:23 EDT 2021 | kojotssss
Hi, check the Land pattern 0201 on the board, compare with another 0201. Could be different gap.,
Electronics Forum | Mon Sep 13 05:14:06 EDT 2021 | compit
A large pad nearby receives heat - the resistor pads heat up unevenly ?
Electronics Forum | Fri Sep 24 18:44:17 EDT 2021 | proceng1
This is what I do to determine if the oven recipe is the cause. Change the rotation that the board travels through the oven.
