Electronics Forum: reflow problem (Page 1 of 238)

Mysterious reflow problem

Electronics Forum | Tue Sep 01 02:23:09 EDT 2009 | isd_jwendell

Have you profiled at the problem side of the part?

UBLOX Tim-4A reflow problem

Electronics Forum | Fri Dec 15 08:40:34 EST 2006 | aj

Straight ramp .

UBLOX Tim-4A reflow problem

Electronics Forum | Sun Dec 17 17:40:49 EST 2006 | darby

Thanks AJ, It is looking like a CTE issue.

UBLOX Tim-4A reflow problem

Electronics Forum | Mon Dec 18 03:06:31 EST 2006 | aj

Darby, You mentioned that you have not incorporated the recommended overprint ? is this so. aj...

Mysterious reflow problem

Electronics Forum | Mon Aug 31 11:31:53 EDT 2009 | davef

How do you go about and what happens when you rework the poorly soldered pad?

Mysterious reflow problem

Electronics Forum | Thu Sep 24 09:15:42 EDT 2009 | markgray

I had this issue a few years ago with Kingbright LED's. The problem was extreamly random. When i changed to a different datecode my problem went away.

UBLOX Tim-4A reflow problem

Electronics Forum | Mon Dec 11 08:52:11 EST 2006 | beta

Hi, I checked out your component.They are differnet dimensions. You say you are not using the recommended overprint ? if this is the case, I would imagine that is your problem. If you want to contact me off line to discuss further plesae feel free.

Mysterious reflow problem

Electronics Forum | Thu Sep 03 01:17:23 EDT 2009 | isd_jwendell

Because it's always the same terminal of the same part that is affected, and the same component is placed in multiple locations on the board without problems, I would suspect the board itself.

Mysterious reflow problem

Electronics Forum | Thu Sep 03 02:38:00 EDT 2009 | sachu_70

Does the established joint still exist if once again re-touched by a soldering iron, or does it return to the original problem? Wetting issues on pad could be for many reasons and you could analyze with a cause effect diagram.

Mysterious reflow problem

Electronics Forum | Wed Sep 23 07:39:36 EDT 2009 | jdengler

Is it possible you are putting boards in the oven with little spacing between them and the oven is not recovering fast enough? I only say this because the 12 zone oven works but the 6 zone oven does not.

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