Electronics Forum: selective carbon (Page 1 of 1)

Wave Soldering Of Carbon Ink Buttons

Electronics Forum | Mon Dec 17 17:30:40 EST 2001 | davef

One of our board fabricators says that carbon inks should be selected based on the process to be used by the assembler. So, their take on this question has some inks that work fine with nc fluxes, others that do not. They suggest: * Determining t

Copper oxide

Electronics Forum | Thu Jul 31 15:41:23 EDT 2003 | davef

Q: Could any of you guys tell me what exactly is this greenish thing ? A: No, but is not copper oxide. Copper oxide is brown, the color of a penny [here in the US] or an untreated copper laminated trace on a board. Many copper salts are greenish in

Selective Soldering - Barrel Fill

Electronics Forum | Fri Oct 15 11:32:04 EDT 2010 | patrickbruneel

Inspecting for plating problems shouldn’t be part of incoming inspection. Your board manufacturer should have the appropriate process control. I shouldn’t have said barrel cracks but plating skips. Plating skips are caused by dull drills or a too hi

Re: Selective Wave Soldering

Electronics Forum | Tue Apr 07 14:37:14 EDT 1998 | Chrys

Be careful about the material you choose. All the materials out there are basically glass-filled epoxy composites, but they are different blends with different fillers. Some of them have carbon in the matrix to make them ESD safe, but it also short

Selective Solder machines

Electronics Forum | Tue Jan 22 15:33:20 EST 2013 | hegemon

Funny how things can be looked at from two sides. Not sure what would be considered low volume in the above post. Our first KISS machine has been producing product for well over 4 years now, double shifts every day, and about 50% of the saturdays

Re: Gold boards OK with SMT?

Electronics Forum | Mon Aug 10 11:28:19 EDT 1998 | Justin Medernach

| Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not ele

Re: Peelable solder stop

Electronics Forum | Tue Dec 29 17:42:27 EST 1998 | Dave F

| Can anyone recommend a solder stop that can be applied by our PCB supplier. Our current material form Tamura Kaken is causing problems. | | The material should be capable of withstanding 1 Surface mount IR reflow cycle and 1 wave solder cycle. | W

Ceramic PCB's

Electronics Forum | Wed Feb 25 08:34:00 EST 1998 | Earl Moon

CERAMIC CIRCUITRY Starting with hybrid thick film circuits in 1965 at Sperry Flight Systems, I have been involved with ceramics (usually aluminum oxide) as the substrate material. Then, we developed "multilayer" circuitry (replacing "cordwood" module

Re: Ceramic PCB's

Electronics Forum | Wed Feb 25 08:30:44 EST 1998 | Earl Moon

| Happy Holidays All, | I am searching out a vendor (US preferred) who can fabricate a ceramic PCb with etremely fine lines. | Please reply if you are a vendor, or know of one. | Thanks, | Wendy CERAMIC CIRCUITRY Starting with hybrid thick film circ


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