Electronics Forum: copper pcb manufacturer contamination (Page 1 of 24)

copper land delamination

Electronics Forum | Mon Nov 15 14:40:38 EST 1999 | Bob Smith

Hi, I have a problem I've never seen before so I hope someone here can help. A recent batch of PCBs arrived where the copper lands delaminate with a small pull. Normally you have to pull pretty hard and the whole land comes off the substrate. These

PCB manufacturer references

Electronics Forum | Thu Sep 13 04:18:33 EDT 2012 | huanyupcb

Dear Sir or Madam HuanYu Future Technologies Co., Ltd is one of the China leading Printed Circuit Board Manufacturing Enterprises.Main supply Aluminum core PCB,copper core pcb ,flexible PCB,fr4 pcb ,Double-sided PCBs , Double-sided flexible PCBs ,We

PCB pad contamination

Electronics Forum | Mon Aug 27 08:03:32 EDT 2007 | davef

Actually, you will be soldering and wire bonding to the palladium layer, so we should have asked if you checked that layer, rather than the nickel. We not sure of the source of the copper that your see on EDX. It's possible copper from the pad migra

PCB pad contamination

Electronics Forum | Sun Aug 26 11:27:12 EDT 2007 | vangogh

Hi Davef, Thanks for the reply. There seem to be no issues on SMT reflow based on some samples done. We have not stripped the gold yet. We did a X-section+EDX and we are seeing traces of copper on the nickel layer. Any idea what is the implication of

PCB pad contamination

Electronics Forum | Tue Aug 21 05:05:52 EDT 2007 | vangogh

Hi All, I would like to get some inputs regarding this.... I have bare PCB which were stored with kapton tape attached on the Au plated pads. These were stored for close to a year. Upon removal of kapton tape, we noticed discolorations on the edges o

Aluminum and silica contamination

Electronics Forum | Wed Jan 12 13:42:19 EST 2011 | dwonch

Hi All, I'm hoping there is a PCB expert or two hanging around. We're having some solderability issue on our boards. The finish is ENIG but it doesn't seem to be related to the finish process itself. We did SEM and EDX analysis and found aluminum an

Plated hole to copper spacing

Electronics Forum | Wed Nov 23 08:43:48 EST 2022 | charles_nguyen

I am having problem with plated hole-copper spacing. I don't know if the gap between plated hole and copper can meet the capacity of PCB manufacturers. My board have 0.5oz copper weight on outer layer and distance of 0.177MM between plated hole and c

pcb manufacturing

Electronics Forum | Fri Sep 01 05:29:01 EDT 2017 | mona0312

Hi, Recently, i found a company called "jlcpcb". It’s very cheap 10pcs boards. 1.2mm thick, 1-OZ copper, 6/6-mil outer (0.1525mm) just cost $2 Cheap price and lots of options regarding board thickness, colour, etc. None of my boards have ever had a

pcb manufacturing

Electronics Forum | Fri Jul 28 18:23:50 EDT 2006 | Board House

Why in the world would you want to start a Manufacturing facility, Hopefuly you were not thinkning of the USA. I would suggest learning to eat once a week, Live at your facility and do not operate with the lights on, This will help in controlling

pcb manufacturing

Electronics Forum | Wed Jan 13 04:27:00 EST 2016 | crystalpcb

Hi Here is our factory production capability: Shenze Electronic PCB Specification Layer Count 1 to 35 Layers Material Brand Shengyi,KB,GRACE,ISOLA,Rogers,Taconic,ARLLON,Bergquist Base Material FR-4(TG135,TG150,TG170,TG180),Halogen Free FR-4,Ceramic

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copper pcb manufacturer contamination searches for Companies, Equipment, Machines, Suppliers & Information

Precision PCB Services, Inc
Precision PCB Services, Inc

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