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Date: | Thu, 13 Jul 2017 19:36:52 +0000 |
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Hello Victor,
Increasing the concentration of the hydrogen peroxide will make this solution more aggressive as a copper etchant. The ammonium hydroxide is mainly there to aid in keeping the copper dissolved as a copper ammonium ion.
Best regards,
Tony Lentz
Chemist / Field Application
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: Thursday, July 13, 2017 1:17 PM
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Subject: [TN] 1:1:1 Copper Etchant, Delineation Region of copper plating interface
Fellow TechNetters:
Is there any possible way to make the above stated etchant STRONGER/AGGRESSIVE: Here are the chemicals: Perhaps by varying the volume of one of the three constituents.
1 - Ammonium Hydroxide, 28.0 - 30.0%
1 - Hydrogen Peroxide, 3%
1 - Deionized water
Victor,
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