Electronics Forum | Fri Apr 17 10:44:29 EDT 2009 | rmitchell
Hi, follow up, Thanks to everyone that responded. We finished the build, the sun burst thru the clouds and the birds sang. Well that was a slight exageration. Sorry for lack of detail on the original post, I was frazzled. Since the 0201's were p
Electronics Forum | Sat Oct 18 09:30:43 EDT 2008 | hussman
Sounds like a part problem. You can SOMETIMES over come this with a hotter profile. We see this a lot with brokered parts. Seems like a lot of people are rejecting parts because a lot of companies haven't perfected their RoHS process, yet produce
Electronics Forum | Fri Oct 24 13:21:12 EDT 2008 | evtimov
Hello Bong, I would make one test only. Make one batch using the problem part from a different vendor. That will answer your main question. For me the part is causing all your problems. If it is possible, change it. Last time having problem like you
Electronics Forum | Fri Oct 17 22:36:35 EDT 2008 | arosario
Hi All, We just started build a new product and I am encountering many non-wet rejects in our new product. I need help on what should I look into to improve our Yield. Please see below back ground 1. We are using DEK Infinity as printer. 2. We are mo
Electronics Forum | Sat Oct 18 20:35:25 EDT 2008 | arosario
I see, maybe changing my peak temp in reflow will help. I'll try do eval again... Actually, once I did have evaluated a longer pre-heat but on my previous eval, I didn't change the peak temp. Maybe reflow can help compensate to my problem in the part
Electronics Forum | Fri Nov 17 15:20:37 EST 2000 | Kris
Dave, That's exactly what we are seeing. There is a trail of components leading away from the pick point, all of which are 0402 parts. I can remove the feeder from the machine, advance a few parts into view, turn over the feeder and only half will
Electronics Forum | Tue Nov 28 14:27:05 EST 2017 | emeto
Without the details I will tell you that you have too much paste. PCB Pad is probably way bigger than the contact lead surface of the part, you overprint, and in the oven this solder have nowhere to go and tilts your part. Check datasheet.Cutting sma
Electronics Forum | Mon Jul 16 10:44:29 EDT 2007 | Jacky
Hi All, Recently, we encountered strange defect at our SMT line. We can see solder ball spatter around at one of the component pad. This lead to insufficient solder defect at 1 side of the component. The other side of the component look good(Meet
Electronics Forum | Thu Dec 11 13:49:48 EST 2014 | emeto
If you have a chance ask them to bring in one of your products(take board, stencil and some heavy part on the PCB that will absorb a lot of heat). They should be able to screen(even manually) it for you, hand place the part and send it through the ov
Electronics Forum | Wed Dec 10 13:26:03 EST 2014 | spoiltforchoice
I don't have one, but a lot of ovens of this vintage are on the market because they DO NOT cope well with lead free processes. There is one of these on eBay right now and it even says ROHS is right at the limit of what it can just about manage so thi
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