MMM, today is NOT our day x2...

j57ltr is right on the money. RoHS is a pain but some oem corps wont look at you twice if you dont have it, especially europe and medical corps. i found soem vendors were passing off LF and PB components as the same. the end caps on the components wont take so well if your using a PB solder with LF components. the fact the solder pad resembles the shape of the end cap may indicate that this has happened, or handling contamination. not sure if a tvs is a moisture sensitive device in storage though? very strange. good luck with the RMA guys.

easy as...123revo

[Pdelcast]

Originally Posted by 123revo

j57ltr is right on the money. RoHS is a pain but some oem corps wont look at you twice if you dont have it, especially europe and medical corps. i found soem vendors were passing off LF and PB components as the same. the end caps on the components wont take so well if your using a PB solder with LF components. the fact the solder pad resembles the shape of the end cap may indicate that this has happened, or handling contamination. not sure if a tvs is a moisture sensitive device in storage though? very strange. good luck with the RMA guys.

easy as...123revo

Again, not a TVS, that was an inductor. Handling isn't an issue -- these are not touched by hand at all -- and the reels are stored in their original packaging (which includes moisture metering) until they are placed on the pick and place machines. The manufacturing facility is maintained at less than 30% RH. After reflow, moisture isn't really an issue for that type of part.

This is a ROHS part, but I've yet to see another return with that part damaged or missing.

[J57ltr]

When I looked at the pics of your boards I was going to commend you for actually hand assembling these units. But you say these are all done on a pick and place? Everything on that board looks like is was hand soldered. I see no evidence of the glue usually used to hold the component in place before it is put through a wave solder station. If you look at the chip to the right that I believe is the driver for the BEC, two of the pins are almost soldered together (LTBRZ). Most of the components look to have more solder than I would expect to see from machine soldering. I am not bashing your product; in fact I really like the features and abuse they tolerate. But the component clearly came off because of a poor solder joint. Our A/D cards use inductors about the same physical size as the one on your board and we had problems like this as well. I actually made a vibration station to test our cards because of this problem. The larger components just need more heat to properly bond the solder. We had this on inductors and some of the SMT Xtals we use. I have also seen at least one other pic in this forum where a component has come off of the board.

Jeff