Electronics Forum | Wed Dec 09 14:36:26 EST 1998 | Earl Moon
| Hi, I know for sure that by controlling temp. and humidity | conditions in SMT assy lines room, one gets advantage in | screen printing, adhesive dispensing, and pick&place | machines mainteinance. Does any one have any advice on why | else is a c
Electronics Forum | Mon Feb 09 09:45:16 EST 2015 | saoasasd
Thanks for the support Jax. Our current scenario: Baking - Not allowed for PCBs Washing - Not allowed Heat Cycles - 2 (Bottom and top side). It's a notebook board Our concern is related to solderability because OSP finishing will be seriously imp
Electronics Forum | Mon Mar 19 13:44:13 EDT 2012 | vinod
If PCB supplier has stored PCB in complete IPC specified storage condition and let say they kept for 2 Years. Are these PCB still good for use? I understand about shelf life and baking procedure but I am not sure how long PCB are good for use if they
Electronics Forum | Sat Feb 26 22:32:42 EST 2005 | siverts
The directive is called RoHS. Meaning that is not only the lead that is the issue. The materials need to whithstand a hihger temperature, not only delta T is an issue (but huge). Moisture sensitive devices: how to handle these? You will see an increa
Electronics Forum | Fri Aug 01 08:10:29 EDT 2008 | scotceltic
Has anyone come across a standard or study (JEDEC, IPC) where it has the recommended shelf life outside of a dry box for immersion silver coated PCB's to prevent oxidation from affecting the soldering process (Both reflow and Wave). I know it will
Electronics Forum | Fri Sep 22 02:19:25 EDT 2006 | lead free tester
The directive is called RoHS. Meaning that is > not only the lead that is the issue. The > materials need to whithstand a hihger > temperature, not only delta T is an issue (but > huge). Moisture sensitive devices: how to handle > these? You wil
Electronics Forum | Wed Feb 14 15:54:18 EST 2018 | cbart
do you see signs of contamination or oxidation? if not why not just send them to the board house and have another OSP coating layer applied?
Electronics Forum | Tue Aug 31 13:23:37 EDT 2004 | frankracine
Thanks Ken for your reply. Concerning OSP, there are a few negative points that I must considered for our application. I've read all the following points in an Entek document. Never test it. - If you have a miss print and you clean the PCB, the co
Electronics Forum | Tue Nov 06 10:28:58 EST 2018 | davef
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Electronics Forum | Wed Jan 04 03:03:13 EST 2023 | msirifat
Hello Magyar, the main reason is supply chain disruption due to covid in china. The regular lot transformers failed in IQC, so we ordered a new lot but it's delayed due to covid. Meanwhile, some other components (bare PCB, capacitor) will be out of s
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