Electronics Forum | Thu Apr 19 02:49:07 EDT 2007 | ray
I observed some black dot or some oxidation occured on chip termination on pcba reflowed fews weeks ago as buffer stock. The solder joint and fillet wetting is good and shinning. It is an acceptable or defect condition per IPC standard/requirement? W
Electronics Forum | Wed Mar 31 18:59:50 EST 1999 | Ron Beasley
Has anyone heard of a problem with catastrophic failure of large value (200uF) solid tantulum capacitors that have been exsposed to high humdity.
Electronics Forum | Mon Oct 22 20:41:32 EDT 2007 | jkhiew
Hi Dave, The solder has tended to wet the component termination of Ag/Pd (chip capacitor) but has not wetted the pads, whereas the solder has wetted both termination & pads when using Ag/Ni/Sn finishes. Thks
Electronics Forum | Wed Apr 18 08:14:20 EDT 2007 | davef
Silver palladium termination * AgPd-terminated capacitors are designed for conductive adhesion. Reflow or wave soldering is not recommended. [EPCOS Multilayer ceramic capacitors, Soldering directions, October 2006] * CONDUCTIVE EPOXY BONDING. Epoxy c
Electronics Forum | Thu Apr 19 16:54:32 EDT 2007 | flipit
I don't suggest using Pd/Ag or Ag/Pd terminated components unless you are forced to use them. You often see a line of demarcation that suggests a poorly wetted solder joint. I have had bad experiences with Pd/Ag terminated capacitors. Even when so
Electronics Forum | Wed Jul 10 18:19:42 EDT 2002 | davef
Flex cracking under the terminations is generally regarded as one of the primary causes of failure of ceramic chips. If you can see cracks in the solder joints from board flex, those chips are certainly strongly suspect, and you must assume there is
Electronics Forum | Fri Feb 05 09:39:58 EST 1999 | Dave F
| Can anyone help me with the pros and cons of trying to wave | solder tantalum and large (1812) ceramic capacitors. I do | know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what proble
Electronics Forum | Thu Feb 04 09:09:07 EST 1999 | dave
Can anyone help me with the pros and cons of trying to wave solder tantalum and large (1812) ceramic capacitors. I do know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what problems I c
Electronics Forum | Thu Apr 01 10:49:14 EST 1999 | AF Ng
| Has anyone heard of a problem with catastrophic failure of | large value (200uF) solid tantulum capacitors that have been | exsposed to high humdity. | I suppose that with water moisture seep in the capacitor, the risk is very high that abrupt o
Electronics Forum | Thu Apr 01 14:00:17 EST 1999 | Ron Beasley
| | Has anyone heard of a problem with catastrophic failure of | | large value (200uF) solid tantulum capacitors that have been | | exsposed to high humdity. | | | I suppose that with water moisture seep in the capacitor, the risk is very high tha
