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 | Fri Jan 20 11:35:34 EST 2006 | Mike Dolbow Atotalgps.com
From what I have seen some component terminal finished have a problem due to storage also. I have seen pure nickel finished turn black. I have seen silver barring finished have problems too. It all depends on how you chose your process, PCB plating,
Electronics Forum | Fri Sep 16 11:58:46 EDT 2005 | vinod
Friends, I have a PCB with Immersion GOld (ENIG) finish. Here are the detalis on the PCB. 1. 6 Layers 2. Immersion Gold (ENIG)Nickel 125-250 Micro inch. 3. FR4 Material 4. Thickness 0.062". I am having problem soldering the through hole components.
Electronics Forum | Fri Sep 16 13:19:59 EDT 2005 | vinod
Friends, I have a PCB with Immersion GOld (ENIG) finish. Here are the detalis on the PCB. 1. 6 Layers 2. Immersion Gold (ENIG)Nickel 125-250 Micro inch. 3. FR4 Material 4. Thickness 0.062". I am having problem soldering the through hole components.
Electronics Forum | Tue Nov 05 09:57:45 EST 2013 | cuperpeter
Hello All, We have a problem with dewetting of solder paste. Problem is most visible on the pads without components (see attached pictures) and occurs randomly, 20% of PCB's. Pcb supplier sent us a cross-section of pads with thickness of Cu, Ni and
Electronics Forum | Tue Sep 13 21:33:35 EDT 2005 | Rick
Lead-free has been around in Canada since 1999 - there are PCB shops that can offer a multi[le of finishes - you just have to look for them
Electronics Forum | Tue Dec 12 19:57:56 EST 2017 | myke03o
Hi Experts. We have an expired OSP pcb and we wanted to extend the shelp life. Is it possible to rework the PCB by removing the OSP coating, micro etching and re-applying OSP finish. Any advice if this can be done? Any solution for this OSP pcb e
Electronics Forum | Sat Nov 25 18:45:19 EST 2000 | Ashok Dhawan
I am getting black spots / stuff while I run gold finish PCB through reflow soldering process using NC solder paste.The affected spots have intermetalic as black in color. Does not solder very well. I did look at the archieve but could not find info
Electronics Forum | Thu Apr 20 02:27:11 EDT 2017 | pavel_murtishev
Mile, Please tell me more about your soldering process: - Are soldering process parameters the same for all three pins? - Is unsoldered pin connected to thermal heavy copper polygon? - What is your board surface finish? HASL? - Sn/Pb or LF process?
Electronics Forum | Fri Sep 12 22:57:13 EDT 2003 | Dean
What is the surface finish of the PCB? Tin? Imersion Silver? What flux is used in wave solder and / or SMT? I have much experience with silver migration and tin wiskers. Both can disappear during a reqork cycle. Both can be extremely difficult
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