Electronics Forum: pcb production (Page 4 of 142)

AQL of pcb assemblies

Electronics Forum | Mon Jun 05 14:09:36 EDT 2000 | Jason

We would like to gauge or precentage of production line failures to industry standard AQL level. What would be an acceptale AQL level for assembled pcb's or finished units leaving the factory?

pcb physical handling

Electronics Forum | Tue May 03 14:49:27 EDT 2005 | jsloot

Can someone provide me with articles dealing with proper physical handling of PCB's? I am looking for something that can be used as a formal document to be used in training and/or used on the production floor. Thanks

defects in pcb manufacturing

Electronics Forum | Mon Nov 02 22:02:01 EST 2009 | boardhouse

Umar - the boards are not assembled - so Solder splash is not applicable. Solder resist does not Melt it cures. As a board supplier I would not want my clients to adapt if they are receiving crap product, I would expect them to leave.

pcb laser markers

Electronics Forum | Mon Jul 12 14:00:37 EDT 2004 | blnorman

We've been using lasers to mark barcodes on our boards for some time now. We use a CO2 laser to burn through the solder mask on most of our boards. The machine is enclosed so the operators aren't exposed to the laser. The laser is also mounted on

metal core/clad pcb

Electronics Forum | Thu Aug 12 11:00:42 EDT 2010 | hegemon

Without seeing a picture, my first instinct would be first and foremost some fixturing that provides full support for your print process. After that, since you are citing bow and twist, consider that the fixturing might as well travel through the ov

lead free pcb plating?

Electronics Forum | Sat Jul 28 08:37:52 EDT 2007 | davef

There is no good choice. Board Finishes: Industrial/Battelle Class 3 Environment [Reliability Knowledge Gaps: For use of Pb-free solders in High Reliability Applications, J Smetana, iNEMI Availability of SnPb-Compatible BGAs Workshop, March 1, 2007,

defects in pcb manufacturing

Electronics Forum | Sun Nov 01 23:51:44 EST 2009 | boardhouse

Hi Julie, My opinion is that the top board would not pass IPC, solder mask encroachment on pads. Second board is what we call Orange peel,this can be caused two way's. 1) the solder mask was not tack dried enough prior to imaging which caused artwo

0.4mm PCB Thickness - production issues

Electronics Forum | Fri Sep 22 17:36:35 EDT 2006 | mika

A bunch of thanks guys, we will take this in consideration. BTW, we will not go for the v-grove in the panel (2x8 boards + the extra cut of areas). The board house recommended us to go for braces/hinges, since this thin pcb-panel could easily break w

0.4mm PCB Thickness - production issues

Electronics Forum | Thu Sep 14 06:45:11 EDT 2006 | Rob

Hi Mika, We had roughly the same set up - AP27 -CP6x2, GSMx2, VIP98 & we ran the thin boards with durastone routed pallets. If you route out a 0.4mm pocket on the pallet and either use kapton tape/high temp masking tape/ or 3M spraymount to hold

0.4mm PCB Thickness - production issues

Electronics Forum | Thu Sep 14 19:19:38 EDT 2006 | SWAG

I would try to panelize as big as you can for sure as you'll spend more time handling single boards than running anything. Additionally, this size is very close to smallest capabilities on GSM depending on your configuration. Fids on all boards in


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