So, I have not had a failure with this yet, but just playing with boards, the two large bulk caps I have "feel" a little less stable to me than I'd like. Picture of board and board in housing below and
here is the specific capacitor.
My parts will frequently be used in a relatively high-vibration environment (think automotive). The housing I design doesn't physically touch the caps (but probably could) - I made that choice because I didn't want the risk of a slight misalignment between board/cap/housing to induce some stress on the joint. So, I'm thinking about gluing these down just for extra insurance against vibration.
I am assembling and reflowing these myself, so I have lots of options available (I think). I could put double-sided tape in the top, inside of the housing cavity where the caps live which would stabilize them from the top, but which would make it harder to disassemble the device (which will happen frequently while we're testing/validating but infrequently once we're in production).
I could apply some glue, but I'm not sure the right type of glue and process to do so. I would think it would have to be post-reflow, but them I'm just hoping the glue wicks down into the right spot or holds onto the edges. I could also physically add a hole in the board under the cap (but obviously beyond the pads) and glue from the bottom, but again hard to guess how good of a bond I'd get and it seems like glue viscosity would become very important.
Or maybe there's a glue I can apply before reflow that wouldn't affect things? That would be nice but seems a tall ask and a good way to cause other fiddly issues.
Anyway, looking for something relatively simple to do if such a thing exists. Or, looking for someone to tell me I'm overthinking this and should wait until ACTUAL physical failures occur before I start solving that problem. Thanks all for any input as always!