Electronics Forum | Sun May 17 03:44:30 EDT 2020 | dunks
Hello, has anyone had issues with uncoated ferrite smd inductors corroding/rusting from di water wash?
Electronics Forum | Mon May 18 15:50:43 EDT 2020 | dunks
Data sheet does not say. Thanks, will likely be doing the same.
Electronics Forum | Mon May 18 15:30:07 EDT 2020 | dwl
I've seen that before, had to switch to a no clean process for those boards. It's not typical for ferrites, usually its safe to wash them. Out of curiosity does the Data sheet say anything about whether or not they can be washed? In my case we lear
Electronics Forum | Wed Jun 09 14:41:12 EDT 2010 | ronchap200027
Has anyone had issues with Renco inductors failing. The component I'm having problems with is a 330uH shielded power inductor. Out of 36 board failures, I have 17 that failed because this inductor failed. Most often they end up reading -1.34 uH.
Electronics Forum | Wed Oct 11 18:12:55 EDT 2023 | alexv
I don't think it's a stencil issue. You have an identical inductor next to t=it, that's perfectly straight. You have a problem in that location. I've seen some inductors be affected by slight magnetic forces in the reflow oven. Try to rotate the boar
Electronics Forum | Wed Oct 11 05:58:13 EDT 2023 | kojotssss
Hello all, I know there are very skilled guys. Can anyone suggest a stencil design to avoid component displacement during reflow to improve tension of surface forces and selfalignment? There are cases where the inductors are shifted. All parameters
Electronics Forum | Wed Oct 11 13:26:59 EDT 2023 | cyber_wolf
Its highly doubtful that stencil design will fix this. The Inductor floats during reflow and ends up going where it wants to go. The only way you are going to keep it in place is to put a dot of chipbonder beneath it or change the size of the lands
Electronics Forum | smith88 |
Sat Dec 11 16:38:14 EST 2021
Electronics Forum | Wed Oct 11 18:30:21 EDT 2023 | kojotssss
Thanks for the opinions! You're right, it can't be solved with a stencil. I have made investigation, the problems are related to the quality of the component land surface, one of the terminal is oxidized.
Electronics Forum | Wed Oct 11 13:40:20 EDT 2023 | proceng1
Agreed. Your "leads" are fairly small compared to the PAD area, so you leave your part lots of room to "stretch it's legs". One thing that I have trouble communicating to my operators is that placement does not have to be perfect, and neither does t
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