Electronics Forum | Thu Jun 19 14:44:53 EDT 2008 | guqing
Did you ever run big electrolytic caps on your board?
Electronics Forum | Mon Sep 10 08:03:23 EDT 2007 | pavel_murtishev
Good afternoon, What is the difference between your cap and the rest of the PWB? BR, Pavel
Electronics Forum | Mon Sep 10 09:29:52 EDT 2007 | guqing
About 25C difference between the cap joint and the small ICs.
Electronics Forum | Fri Sep 07 12:19:20 EDT 2007 | guqing
We are having problem to develop lead-free (SAC305) reflow profile for big SMT electrolytic caps. The delta T of the joint of the cap with the rest of the board is too big to fit in the tighter lead-free window. Any suggestions regarding the total pr
Electronics Forum | Thu Jun 19 15:52:16 EDT 2008 | guqing
So correct me if I'm wrong: you are using a conventional oven (not VP, otherwise you must have mentioned), your big electrolytic caps go through a lead-free profile, which requires 30sec minimum at 230, but your time above 200C on the caps is less th
Electronics Forum | guqing |
Thu Jun 19 14:26:04 EDT 2008
Electronics Forum | Fri Jun 20 14:25:40 EDT 2008 | realchunks
Yes.
Electronics Forum | Fri Sep 07 14:55:25 EDT 2007 | jseagle
Change to through hole or hand solder. we are in the same boat and have not foound a reflow solution. James
Electronics Forum | Mon Sep 10 11:16:37 EDT 2007 | russ
Can you implement a longer soak? how many feet of heat do you have in oven? Russ
Electronics Forum | Thu Jun 19 12:48:32 EDT 2008 | mumtaz
What the hell our you talking about 200 c max? I would think any nolead part is capable of going hi-er that this. I think you are looking at max temps or something that does not make sents for temps you need to reflow.
