Electronics Forum | Mon May 15 13:05:31 EDT 2017 | edhare
Pin holes in the gold can allow for corrosion of the underlying nickel and copper to form copper and nickel oxides on the gold surface (example - http://www.semlab.com/blog/?p=564. The corrosion can work itself all the way through the EN layer (exam
Electronics Forum | Sat May 06 06:19:36 EDT 2017 | rob
You could also try some of the 3D MID placement machines - some have dispense heads in with the placement heads, so theoretically you could place on the PCB paste, dispense on the terminals. and place the new part. Yamaha/I-Pulse do a couple: https:
Electronics Forum | Tue Jul 18 03:11:48 EDT 2017 | tsvetan
I recently bought: PCB Loader, Full Automatic Printer with vision with 10 seconds print time, 1 meter Inspection Conveyor, Samsung SM482+Feeders, 1 meter Inspection conveyor, Reflow oven for similar budged, all machines new. I bought them directl
Electronics Forum | Fri Jun 02 11:11:11 EDT 2017 | jsmith145
Does anybody have any information regarding an Omegameter 500 (Kenco Industries)? We’ve run 4000+ tests with this machine and all have produced a pass result without a single failure, starting to wonder if tests aren’t accurately assessing PCB cleanl
Electronics Forum | Mon Jul 24 20:50:25 EDT 2017 | dawson
I'm curious why you ask this question even though I really don't know whether there is such smt assembly facility in HK. Maybe you think there is 17% VAT in the components to China outside from China mainland, but there is no tax in HK. I have to say
Electronics Forum | Wed Jul 12 06:29:11 EDT 2017 | jamesbarnhart
Soldering electronic components like electrolytic capacitors can be some of the most difficult terms in PCB repair. Electrolytic capacitors, like other components, come in two main formats. 1. Through-hole capacitors have long leads designed to pass
Electronics Forum | Fri Jul 28 11:16:09 EDT 2017 | robertwillis
Yes it happens with any inline cleaner with small or light boards the pressure can cause them to flip. If they lodge in the links they can also cause damage to the conveyor. For small boards, flexibles etc you do need a mesh fixture of some sort or l
Electronics Forum | Fri Aug 11 22:14:59 EDT 2017 | dawson
Hi Adonys, What's ICP 1-3? Do you mean IPC? 1. Excess Plating- no excess, but filled with something which generated in the process of copper plating. 2. Dark Vias - it's oxidized. and the solder mask printing is not aligned. The board is failed. M
Electronics Forum | Mon Aug 14 03:25:51 EDT 2017 | spoiltforchoice
There is no solution in above case, this is > caused by the PCB design. There are no > thermals on the pads connected to the copper > poured area. So the other pad reflow first and > lift the component. Yes, this. You could try playing with
Electronics Forum | Wed Aug 30 05:36:38 EDT 2017 | alexandrdmc
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