Electronics Forum: plating (Page 131 of 252)

Wavesolder PCBs encounter pinholes

Electronics Forum | Wed Jul 21 13:18:19 EDT 2004 | patrickbruneel

Thomas, The first thing I would suggest you to do is identify the type of problem your dealing with �pinhole� or �blowhole� before you can take the appropriate action to correct the problem. A pinhole is a void or cavity caused by non-wettable part

RC Filter

Electronics Forum | Thu Aug 05 09:23:36 EDT 2004 | blnorman

We're using a RC filter network that we're having solderability problems with. There are 4 RC pairs with 2 ground connections (this is a leadless component). The problem we're having is non-wetting of one of the castellations (9 of the 10 scallops

enig

Electronics Forum | Tue Jan 04 12:37:41 EST 2005 | Cmiller

We have been using this finish almost exclusively for fine pitch boards for about 5 years. Make SURE you use a board house that does the gold plating in-house. There are some potential issues as DaveF stated. The only problem we have encountered is w

USED EQUIPMENT IN CHINA

Electronics Forum | Thu Aug 04 07:13:42 EDT 2005 | stefwitt

All good advise, guys. I somewhat blame myself, that I didn�t inspect the machine. On the other hand, who knows, what machine I would have seen. Here are some e-mail responses, indicating, that this is not the type of business I�m capable of doing my

Reflow Oven Selection

Electronics Forum | Sat Aug 27 12:45:44 EDT 2005 | Mark

Thanks for the replies. Interesting white paper. Didn't quite answer my concerns but still a good read. I was actually surprised that to test temperature uniformity across the zone, they attached T/C's to the substrate rather than measure the ai

DEK265 or DEK260 for high mix low volume ???

Electronics Forum | Mon Feb 20 17:56:46 EST 2006 | Chris

If you are running FR4 PCBs and not something exotic like Kapton flex circuits, I would go with the Dek 265 any day of the week. You will find that Dek supports the fully automatic printer much better than the semiautomatic printers like the 260, 24

Plating Rework

Electronics Forum | Tue Dec 26 22:18:20 EST 2006 | davef

Common methods to replate components are: * Barrel plating http://www.finishing.com/Library/zemo/barrel.html * Hot solder dipping - MIL-F-14072 M258 Certainly you can do this yourself by dipping the component leads into a solder pot containing lead

GSM Calibration

Electronics Forum | Mon Jan 29 11:53:54 EST 2007 | mika

Is this a single beam (GSM1)or a dual beam machine (GSM2)? If it is a GSM1; how does the pickup works with Head 2 from the front feeder banks? Do you have removeable or fixed feeder banks? If removeable, make it fixed, using screws through the bank

COB and Plating

Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal

Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process

Processing questions - PCB and BGA's

Electronics Forum | Fri Jan 30 10:29:48 EST 2009 | petep

We have a potential new customer who has special PCB requirements. I do not know a lot of details at this point, but have several questions. One of their assemblies has within it , a MID, Solid foil layer, completely isolating one side of the PCB f


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