Electronics Forum | Wed Jul 09 16:00:04 EDT 2008 | grics
Obviously you wouldnt perform the most difficult rework tasks till last... Sorry. I should have clarified. We rack our units to keep good units flowing and fall out are held for rework. The line never stops. Inspection is inline and it is the deci
Electronics Forum | Wed Jul 16 18:21:20 EDT 2008 | emti
BGA Placement is not easy as we think, Mainly you have to make sure you don't have acceessive amount of paste, try to paste your board as it covers full ball, make sure it is not short before you place any part. If you placing the BGA by hand be car
Electronics Forum | Tue Jul 15 09:02:09 EDT 2008 | ehess
Has anyone using these ovens had any problems with the chain (flat) belt slipping? I suggested to the tech we remove a link in the flat chain, and he responded it would make it out of warranty. It's the same type of chain flat belt as most wash and
Electronics Forum | Wed Jul 16 18:46:46 EDT 2008 | mariss
emti, Thank you for the reply but I'm looking for a reasonable quality pcb mfg. We do SMT and thru-hole in house (3 Juki KE-750L machines) of our product. My problem is with the bare boards: holes poorly registered with top copper, solder masks mis
Electronics Forum | Wed Jul 16 19:01:44 EDT 2008 | boardhouse
Hi Mariss, The Main Problem with China is that they are constantly in training mode due to extreme turn over of employees. There are good shops their but you need to look hard. The Company I Sale for owns Two shops, 1 in Taiwan and 1 in china. We
Electronics Forum | Fri Jul 18 14:36:17 EDT 2008 | proy
I have a QFN which we are adding after process. (it was not available the day we ran the 4 prototypes.) We have removed most of the solder on all the pads, My plan was that a LITTLE solder on the center pad would wet and center the device (using a g
Electronics Forum | Sat Jul 19 12:22:55 EDT 2008 | operator
Are there any softwares OR functions inside of the softwares that allow a designer that is creating a very large complicated wiring diagram with say....many terminal blocks and connectors etc... to run a point to point check on his drawing? Bascially
Electronics Forum | Tue Jul 22 20:47:21 EDT 2008 | davef
Q1. Can I do this myself on site? A1. Sure. Most companies demoisturate their components in-house. Q2. Can we use our Vitronics Soltec XPM820 Reflow Oven? A2. You can. Most of us would be using an oven like that in our product processing. If you look
Electronics Forum | Wed Jul 23 03:04:57 EDT 2008 | gfro
Hello, We are using a PCB with thickness 3.2mm 4 layer and lot of through hole via's of diameter 0.4mm. We specified our PCB vendor to do plugging. Now we have big problems, that after 1..4 weeks we measure a low resistance between track's/via's of
Electronics Forum | Wed Jul 23 08:18:29 EDT 2008 | davef
Q1. Is this a standard process for plugging? A1. Not as such. We checked both IPC-6012 and IPC-SM-840. Neither comments on plugging. So, your fabrication notes rule the day. Q2. Is this okay for such thick PCB's or is it mandatory to use a special pl
