Electronics Forum | Fri Jun 03 16:52:48 EDT 2005 | davef
Your customer is being smart. When we look at the evaluation that some component suppliers do in assessing the potential of the pure tin solderability protection they've chosen to produce tin whiskers, we just shake our heads. Essentally they say,
Electronics Forum | Tue Jun 21 19:25:10 EDT 2005 | darby
This is basically the reply that I had from Heller ovens regading this - "The recommended air flow is at the back of the machine near the vent. From the book I copied from you it should be 500 CFM. If you do not achieve this figure, it not a great
Electronics Forum | Mon Jun 27 14:15:23 EDT 2005 | Bob R.
We have a couple sites (out of over 150 lines) that use them. The site that picked them stands by them through thick and thin. Any time they have problems they blame it on the paste, even though paste from the same lot will be running great next do
Electronics Forum | Fri Jul 01 18:00:44 EDT 2005 | mrduckmann2000
RB, We have a gold finger problem here at our plant. Our kapton tape came off in the wave process and now we have 8 PCB's that have silver fingers. We are waiting on our new A.P.E. SRS-069 Gold Finger Plater. This mircle machine is going to fix a
Electronics Forum | Fri Jul 29 19:12:30 EDT 2005 | Jason Fullerton
In the true sense of the term, tombstoning can only occur during reflow. Now, if your solder joints are cracking during thermal cycling and opening on one end you still have a problem - it just isn't "tombstoning". What laminate are you using on yo
Electronics Forum | Thu Aug 04 07:13:42 EDT 2005 | stefwitt
All good advise, guys. I somewhat blame myself, that I didn�t inspect the machine. On the other hand, who knows, what machine I would have seen. Here are some e-mail responses, indicating, that this is not the type of business I�m capable of doing my
Electronics Forum | Thu Aug 11 21:43:19 EDT 2005 | Ken
Those temp stickers are useless unless you can stick them into the copper barrel. They can only determine "skin" temperature which has nothing to do with what is happening in the barrels. Your solder is filling the barrel then going cold. I'll gua
Electronics Forum | Wed Aug 17 14:18:11 EDT 2005 | ppwlee
Dave, Answers to your questions: * From your pictures, the white residue appears to be only on the solder mask. Is that correct? If not, what is the location [eg, solder, nonsolder/nonmask areas] of the residue that doesn't show well in the pictur
Electronics Forum | Thu Sep 01 18:53:08 EDT 2005 | Board House
Pr. I agree with some of the above responses. if you are seeing Delam issues with incoming PCB's the following should be check. 1) Check the OEM Print to what Material they are calling out to be manufactured with. 2) If they are calling out for S
Electronics Forum | Wed Sep 21 10:40:18 EDT 2005 | PWH
Splicing for us has been a rough go as we haven't really found a tool that works well/fast. We have a few different machines = different feeders. They all react different to a splicing "style". The best so far is a crimp tool that crimps a brass s
