Electronics Forum | Wed Dec 26 00:28:22 EST 2018 | premkumar_haribabu
Hi, Can some one reply for my query please ?? Thanks Prem
Electronics Forum | Thu Dec 20 09:50:44 EST 2018 | stephendo
Once a long time ago I had a board where the cap beside a tantalum shifted in the oven. I phoned our HQ plant and was told that they had the same issue and that it was the tantalum capacitor outgassing. We just applied a dot of glue to the cap. Try b
Electronics Forum | Tue Dec 25 05:26:43 EST 2018 | premkumar_haribabu
Hi Robl, Thanks for quick reply , I want to see you my attachment first ( forgot to attach in my first share ) .As i said earlier ,Im suspecting termination design made by vishay & I never seen these kind of design from other alternate vendors which
Electronics Forum | Thu Dec 20 07:08:07 EST 2018 | robl
Hi Prem, OK... Is it definitely ok before the oven, as it's a big part to move. Never had an issue with them. Has the part got the correct z height on or is the paste being displaced on placement What machine are you placing it with (is it laser
Electronics Forum | Thu Dec 27 14:46:32 EST 2018 | emeto
Hi Prem, it will really help if you provide more pictures and metrics. Pad layout, part datasheet, stencil design and most of all picture of the misplaced part on the board. This looks like a very interesting case and I am willing to help you, but t
Electronics Forum | Thu Dec 20 05:06:48 EST 2018 | premkumar_haribabu
Hi Team, We using one of tanatalum capacitor ( vishay) for many models , in this we facing mis-alignment & throwoff issues after post reflow stage. After my analysis,my suspection is that due to one side part termination design ( square cut) issues
Electronics Forum | Tue Jan 08 22:23:24 EST 2019 | kenneth0
Hi Prem, try take a few caps and bake them before assembling them to the board to see whether this problem goes away. Its a common problem these tentalum caps can outgas if there's moisture trapped within. Once verified that moisture is the culprit
Electronics Forum | Sun Feb 23 06:13:47 EST 2025 | kirill
sadly, dont have any pcba that i can take a photo of the issue. But imagine the capacitor, soldered on the first side as it should on two pads, but when the second side is getting soldered and the capacitor is at the bottom, it disconnects from one o
Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef
Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and
Electronics Forum | Thu Dec 30 13:19:40 EST 1999 | jason
Are there any concerns or issues when connecting Tantalum caps Back to back.
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