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September 1999

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Subject:
Re: Ammoniacal vs Cupric chloride Etcher.
From:
"Carano,Michael" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 8 Sep 1999 15:46:13 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (52 lines) 
Lenny,
From my experience, ammonical etchants remove  1 ounce copper in about 45
seconds, maybe a little less. Cupric is typically 55-60 seconds for 1 oz.

Thanks,

Mike Carano

        -----Original Message-----
        From:   Lenny Kurup [SMTP:[log in to unmask]]
        Sent:   Wednesday, September 08, 1999 1:51 PM
        To:     [log in to unmask]
        Subject:        Re: [TN] Ammoniacal vs Cupric chloride Etcher.

        > What system etches faster, ammoniacal or cupric chloride? Based on
        > typical PCB manufacturing, and common chemistries i.e. nothing too
        > fancy and juiced.
        >
        > LK

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