Electronics Forum | Wed Jul 01 13:17:39 EDT 2015 | davef
Cheryl Tulkoff and Randy Schueller do a good job summarizing the thinks on pad cratering here: http://www.smta.org/chapters/files/uppermidwest_padcratering.pdf Potential Mitigations to Pad Cratering * Board Redesign * Solder mask defined vs. non-s
Electronics Forum | Fri Jul 10 15:28:47 EDT 2015 | sumote
I could really use some help, My oven is continually blowing one of the SFC fuses (the one on the left as it sets in the machine) when the conveyor tries to run. It appears that the traces on the circuit card were having too much current pulled th
Electronics Forum | Thu Jul 30 17:31:41 EDT 2015 | dyoungquist
We are running a Mydata (Micronic) MY15E. The MY100 is the next generation after the MYxxE series. As far as I know, there is no way for the machine itself to check the polarity of ICs to see if 1 or more are in the tube or reel different from all
Electronics Forum | Fri Jan 08 03:56:38 EST 2016 | a290668789
there is no best company just the company best for you. E.g. I use PCBgogo(www.pcbgogo.com/b), they make PCB and also do PCBA, but they don't buy components for me. I don't like this at first and I prefer turn-key service, but why I still choose them
Electronics Forum | Fri Dec 04 05:47:57 EST 2015 | rushpcbuk
In PCB design, a BGA (Ball Grid Array) package typically determines the number of layers that a Printed Circuit Board should have. However, the 4-layer board with a BGA package is commonly used than a 2-layer than an 8-layer PCB. On the other hand, t
Electronics Forum | Wed Mar 01 02:10:05 EST 2017 | soldertraining
Hi! I am Bob and pls forgive me if technical words I use are wrong. What may cause the BGA solder pad lift before or after reball? I am having problems where solder pad lifted during removal of bad solder ball. It also occurred during reball, where t
Electronics Forum | Fri Jun 03 10:11:08 EDT 2016 | tnisbet
If you end up buying a depaneling machine/robot, > the guys at Pentagon EMS are very good at making > fixtures. Once they have the specifications of > your machine all you will have to send them is > your panelized drawing of your board. In extre
Electronics Forum | Fri May 06 08:27:38 EDT 2016 | kahrpr
We have Samsung and havehad no problems with simultaneous pick ups with 201s 0r 402s. the feeders are durable and do not need much repair especially the sm feeders. The SME feeders have not been out as long so we will see so far so good. As with all
Electronics Forum | Tue Aug 02 15:02:50 EDT 2016 | davef
ASPIS (Advanced Surface Protection for Improved Reliability PCB Systems) The three year Aspis ‘Research for SMEs’ project has been conducted to address problems found with the nickel gold (ENIG) solderable finishes that are used by the electronics in
Electronics Forum | Mon Jul 11 07:40:11 EDT 2016 | spoiltforchoice
I don't know your machine but you are looking at the most likely areas. Some machines define a placement pressure, other may define an overtravel to make sure the device is firmly placed on the board. There are usually also timings for when the vacuu
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