Electronics Forum | Wed May 31 17:37:29 EDT 2000 | Arturo
I�m also having this problem with Panasonic film capacitor. Even when I have the correct pad size according to Panasonic data sheet the tombstoning occur. I am thinking that the problem could be the plating of the film capacitor. The only way I could
Electronics Forum | Tue May 09 18:30:35 EDT 2006 | muse95
I can understand the theory behind fewer tombstones with SAC. If people were having tombstone problems with SnPb eutectic solder, often switching to Sn62Pb36Ag2 would improve it, because with the addition of some silver, a small plastic zone in the
Electronics Forum | Wed Feb 23 16:38:41 EST 2000 | Michael Parker
I have experienced tombstone with one brand of 0603 capacitor. Swapping in another brand (actually two different brands to date) has stopped the tombstone. I have measured the parts (length, width and height). There does not appear to be any apprecia
Electronics Forum | Tue Dec 26 11:26:00 EST 2000 | acahill
If you have a known problem with the parts, then Reject them back to the Vendor. It appears that you have a solderability issue. As for Tombstoning on 0402 chips, this could trace back to the stencil design and/or machine placement. Define Tombstoni
Electronics Forum | Wed Feb 23 16:38:41 EST 2000 | Michael Parker
I have experienced tombstone with one brand of 0603 capacitor. Swapping in another brand (actually two different brands to date) has stopped the tombstone. I have measured the parts (length, width and height). There does not appear to be any apprecia
Electronics Forum | Wed Jan 12 09:30:33 EST 2000 | Jim Schultz
I need your help. I have been battleing tombstoned 0603 resistors for many months now. I have been working on the profile, the placement accuracy of the chipshooter, and the print accuracy. I am writing in the hopes that someone out there has some
Electronics Forum | Sat Dec 18 01:53:46 EST 1999 | sin
If i have problem with tombstone, first i would look at the placement of my components. if placement is 50% greater on the pad, it would be ok to reflow. even you have bad profile, you would have some other problem not tombstone. then i look at
Electronics Forum | Thu Apr 29 22:50:41 EDT 1999 | Kelly Morris
Tombstoning 0805s w/palladium/platinum/silver terminations We are experiencing tombstoning problems on 0805 packages that have paladium/platinum/silver terminations. It comes & goes...... I�ve checked the reflow profile, and paste deposition and a
Electronics Forum | Wed Aug 05 20:48:50 EDT 1998 | Ron Costa
I'm currently running a double sided paste smt board loaded with 0603's, on the secondary side. Many of the 0603 devices tombstone during reflow if the parts are not perfectly centered on the pads. Is this caused by the .008 foil thickness? Has anyon
Electronics Forum | Fri Apr 04 05:02:08 EST 2003 | alexyalung
Hi All, The best solution we made on our tombstone defects is component Z dimension set at pick and place machine. Usually for 0402 components Z height is pre-set by the machine at 0.5 mm, by reducing it to 0.35mm we have solve our tombstone problem
