Electronics Forum | Wed Jul 22 13:59:52 EDT 1998 | Justin Medernach
>Have you looked into legal crap like >>proprietary aperture designs. I didn't know it >>but some of these pick and place vendors >>actually have patents on things like pad and >>aperture geometry. Personally, I think that's >>crazy and shouldn't b
Electronics Forum | Tue Jul 20 17:47:28 EDT 1999 | Deon Nungaray
| I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste
Electronics Forum | Tue Sep 19 09:41:30 EDT 2017 | sumote
Steve, The 4 things I would do, and in this order: 1. Clean your stencil with stencil cleaner wipes after it comes out of the stencil cleaner. I like MicroCare ProClean (MCC-PROWR). I will even saturate the wipe with a bit of isopropal just till
Electronics Forum | Sat Aug 05 09:06:40 EDT 2000 | Dave F
I'm confused ... Land Grid Array (LGA). An alternative to the BGA for device manufacturers is to package their devices without any terminations on the bottom. Although not technically accurate, the easiest way to envision an LGA device is to pictu
Electronics Forum | Mon Jul 30 21:29:34 EDT 2001 | kennyhktan
Hello Michael & All, Thanks for the feedback. Months ago we receive a number of reject concerning one of the 0805 & 0603 chip capacitor mising (with joint remain on pad)and seriously solder joint fracture. From there I had do some investigation
Electronics Forum | Thu Jun 06 21:35:22 EDT 2002 | ianchan
Hi mates, 1) Firstly, thanks for everyone's reply to this thread. Cheers! 2) Secondly, Hussman69: sure u dun mean that blokes' tie was too tight? musta cut off his blood flow and oxygen?!? 3) Thirdly, we checked with our paste supplier, and they r
Electronics Forum | Fri Jan 24 21:45:14 EST 2003 | jonfox
We have had to return 6-8 lots out of the last 20 to the board house we (used to) use. From V-score cutting through pads to missing pads (and they say they electrically test our boards?!). I mean, come on, you can look at a PCB and see if there is
Electronics Forum | Sun Mar 06 20:08:38 EST 2005 | mrduckmann2000
Davef, You have a good question. If we had perfect design engineers out there that would use the proper component spacing and not put SMT parts between and around thru-hole parts - glue and wave would work perfectly. I have done this with great su
Electronics Forum | Mon Apr 04 09:45:55 EDT 2005 | Homer
IPC may help, otherwise there are many factors: Are the PTH clinched or straight? If straight, what length protrusion? What direction are the parts running thru wave? Is product on a pallet? Not to mention your soldering process: What type of mach
Electronics Forum | Fri Sep 15 16:30:13 EDT 2006 | russ
yes there is Caveman, (well maybe depending on your circumstances) you need to purchase a manual printer and print the connector then flip and print the other side. (you need a manual printer so you can print after the parts have nbeen reflowed, we
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