From: John Woodgate
Subject: Re: gold flash on pcb
Date: Sat, 30 Nov 2002 06:30:39 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Sat, 30 Nov 2002 06:36:49 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that R. Lewis
wrote (in ) about 'gold flash on pcb',
on Fri, 29 Nov 2002:
>"John Woodgate" wrote in message
>> I read in sci.electronics.design that Raymond Rogers
>> wrote (in <3DE69773.email@example.com>)
>> about 'gold flash on pcb', on Thu, 28 Nov 2002:
>> >_I_ might suggest some acid that would dissolve the copper and leave the
>> >gold untouched.
>> In fact, that won't work; too simplistic. The only practicable way is to
>> use specific metal-identification sticks that use complex chemical
>> cocktails to produce a colour change with just one (or two, different
>> colours) metals.
>Sounds good to me.
>Do you know where I can obtain such chemical stix ?
I don't know the names of suppliers. The people who do plating should be
able to tell you, if a Google search fails. Try 'identifying metals
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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