Electronics Forum | Thu Apr 20 05:10:10 EDT 2017 | thaneshsivanadian
Hi Guys, Currently im seeing corrosion on a gold pad as i shown in the picture. May i know is this corrosion or pad oxidation?? This defect were found after complete of all process including cleaning and im using water-soluble flux to run the produ
Electronics Forum | Sat Apr 22 09:29:51 EDT 2017 | westshoredesign
One of our machines has somewhat randomly lost the ability to optimize programs. It freezes every time, without fail, during the initialization step (in optimizing). I don't believe there is anything wrong with the tabletop, or board program. I've t
Electronics Forum | Mon Jun 05 18:45:07 EDT 2017 | zsoden
Hi Steve, I agree with your assessment, it would certainly seem like the pads are de-wetting. But what could be the cause of this? Contaminated solder? The boards are new out of vacuum sealed bags (with desiccant sachets), so I can't see it being the
Electronics Forum | Mon Jun 12 11:04:20 EDT 2017 | bobpan
So what your telling me is kind of vague. Does the machine home and go to the front left corner of the machine? If it does....this could be a quad align problem....meaning dirt on the lens or so-forth. You should watch the heads homing in the z-axi
Electronics Forum | Mon Jun 19 07:59:01 EDT 2017 | emeto
Hello, I am planning to use a water wash flux. As this is new to me, would you guys share what should I be aware of? I know cleaning PCBs itself presents issues. If you can share your experience so I can prepare better, it would be great.
Electronics Forum | Wed Jul 05 11:25:10 EDT 2017 | davef
You've posed a very broad question, I'm not sure what you're asking. As a starting point ... Kester reported “The Effect Of Metallic Impurities On The Wetting Properties Of Solder“ [http://www.smtnet.com/library/index.cfm?fuseaction=view_article&art
Electronics Forum | Thu Jul 06 16:13:28 EDT 2017 | barryg
Hello everyone, I was curious if anyone knows what criteria there is for layer to layer registration. I have looked at ipc-600 and 601 and have not found anything or am missing something. We had a small qty. of pcbs sent to a customer and some inner
Electronics Forum | Thu Aug 10 07:45:20 EDT 2017 | stephendo
Do not put something randomly together. Go to the UL web site. Ask them your questions. Do not only ask us. Personally I think you would be smart to present the BOM to UL before buying anything. And parts being UL is not the only requirement. Where
Electronics Forum | Thu Aug 31 08:43:40 EDT 2017 | hxamalia
Hello dear Good day , it is Amalia from HX Circuit Technology Co.,Ltd in China, we are a prefessional PCB factory with many years. We forcus on producing Aluminum PCBs for LED , please contact with me now ,thanks Email: amalia@hx-circuit.com Skyp
Electronics Forum | Mon Sep 11 12:30:43 EDT 2017 | slthomas
Great reply, Tom. We do contract assembly of a few UL listed products and when we do, the customer has always done the legwork up front, with UL, to determine which components are critical. Being the manufacturer of record, we're responsible for m
