Electronics Forum | Mon Jul 13 06:02:08 EDT 2015 | piyakorn
Hi All Some our customer has a new order but has been stopped long time ago (2012) which ENIG PCB in our raw material stock that are date code xx12 (still be vacuum sealed with silica gel) so,Will there be any risk or not? Help me please. Than
Electronics Forum | Fri Jul 24 16:33:45 EDT 2015 | cnotebaert
You should be fine! best practice for a situation like this would be to run a solder sample, either flux it and run through wave, or screen print, don't place parts and run through reflow. look for proper wetting characteristics if you see de-wetting
Electronics Forum | Wed Jan 30 05:36:04 EST 2002 | vincent_f
Hello everybody, I would like to use PCB which have expired. I have already planned to bake them in order to avoid pop corn effect but I wonder about some few items : 1) How can I identify the optimal baking parameters ? 2) Even after baking, is the
Electronics Forum | Wed Jan 30 17:49:41 EST 2002 | davef
PCB never expire, they just become more difficult to solder. [Many shops impose �shelf life� periods for their boards, but they aren�t going to discard the boards if the exceed the limits, unlike they would with some other process materials.] IDENT
Electronics Forum | Wed Jul 16 19:38:28 EDT 2014 | garym4569
What is the base cost of an inline pcb etcher? Specs: fiducial alignment, smema interface, 400mm x 400mm marking area. Will be used to mark panel 2d codes, pcb array 2d codes, and human readable. Thanks Gm
Electronics Forum | Mon Jul 19 19:22:09 EDT 2004 | g2garyg2
Laser Marking stations generally accept the product, clamp it in place, then through a motion platform move the product underneath the laser head. Marking is generally conducted with a CO2 laser ranging between 20 to 30 watts. You will loose 20% thro
Electronics Forum | Mon May 20 16:56:24 EDT 2002 | Gary
Excess slump of paste and mis-registration can cause solder balls along with moisture. Use same date code of pcb and run with no components, paste only. Also pre-bake boards with humidity sensor in oven. If high humidity, moisture and solvent residue
Electronics Forum | Mon Dec 31 05:14:58 EST 2001 | ronih
Hello, Are there any rules for PCB drying (baking) before assembly; Date code criteria, finish process on PCB, storage conditions.. ect. I know some assemblers that are baking all PCB (not ENTEK!) as default before assembly, is it realy nessesary? i
Electronics Forum | Sat Mar 20 06:19:51 EDT 2010 | shrikant_borkar
Hi, I a looking for solution for printing,Date/batchcode ON pCB. Please suggest solution how to Put Batch code, Mfg dates on Pcba which is in process. Regards Shrikant INDIA PUNE
Electronics Forum | Tue Mar 06 14:10:52 EST 2001 | CAL
Are the voids in the balls of a BGA? Are you verifying this through x-ray if they are? some voids depending on size and location are some what accepted. Solder paste type? Solder paste date code? Humidity high? PCB's been stored in a truck trailer?
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