Electronics Forum | Fri Feb 17 09:08:22 EST 2017 | davef
An interesting paper on the topic is "The evolution of surface finishes in mobile phone applications" by Claus Würtz Nielsen at Nokia Mobile Phones R&D [http://www.cicmt.org/adv_micro/papers/Nordic2004paper.pdf] The paper reported corrosion problem
Electronics Forum | Tue Feb 28 12:41:36 EST 2017 | deanm
Is anybody using Vicor VI Chips (SMT version)? We are using a number of these on some of our boards and are having inaccurate placement and insufficient solder issues (8 mil step stencil still not enough). If you are placing these devices: 1. Which
Electronics Forum | Thu Mar 02 10:09:02 EST 2017 | rvines1
We have a board with an LQFP-176 with 0.5mm pitch. We regularly have to rework these due to unsoldered pins, which is due to pins that are slightly bent upward. We believe that we are receiving them this way, but it may also be due to handling on o
Electronics Forum | Thu Mar 09 09:15:37 EST 2017 | ilavu
This is not a adds. I am just asking for other supplier name and experience that they have. Like Phil said he never have any problem with same company. I just wanted to let people know my pain with same company. Phil- Keep your eyes on the accounti
Electronics Forum | Thu May 04 14:33:26 EDT 2017 | sumote
If you are doing contract manufacturing you may need to get permission, or at least disclose the foreign material you are introducing into the solder bath. I looked at it and decided the potential problems it could cause were not worth the time it wo
Electronics Forum | Thu Mar 30 07:10:56 EDT 2017 | nickywan
I have a problem with some particle, dust and solder paste contaminate on PCB rack and need to clean up once a week by manual. Now looking for the equipment to do Inline cleaning with water jet & Hot air Dry concept. Not too big machine and concept l
Electronics Forum | Mon Apr 03 04:04:06 EDT 2017 | soldertraining
Lasers can be used to depanel individual PCBs from panels. In addition, laser depaneling is often used when very tight tolerances are required for PCBs such as when there is very little room in an enclosure that the board is fitting in to. But the ch
Electronics Forum | Thu Apr 20 02:27:11 EDT 2017 | pavel_murtishev
Mile, Please tell me more about your soldering process: - Are soldering process parameters the same for all three pins? - Is unsoldered pin connected to thermal heavy copper polygon? - What is your board surface finish? HASL? - Sn/Pb or LF process?
Electronics Forum | Thu Apr 20 02:44:39 EDT 2017 | tsvetan
The hole is too big, you should reduce the size in the next PCB revision. The middle joint is soldered at low temperature you can see how the solder didn't distributed evently and cooled on waves. The solder joint at the bottom didn't wet the capac
Electronics Forum | Mon May 15 17:04:07 EDT 2017 | kellogs54
I have just been asked to project manage the introduction of new production line within my organisation . This normally wouldn't be a problem but I have very little experience on smt manufacturing. I guess the hard part is done as all the equipment h
