Through hole plating
From Null Space Labs
Contents |
Through hole plating of PCBs by acid copper.
Constant current, pulse and reverse pulse processes
More Pics Pics tagged 'NSL plating'
Formula:
Ingredients: .881 lb of crystal (CuS04)to each gallon of DI water .4 gal 35% sulfuric acid (H2SO4) .5ml hydrochloric acid (HCL) PEG 10mg/L leveler (found as laxative at RiteAid) Janus Green B as brigtner
Tips: -Makes about 1.5gal -Can push about 25amps per sqft but we have been using 8amp/sqft as the plating seems brighter and more level -With a little agitation it seems we can push 10amps/sqft with out diminishing brightness. -Light sanding after activation is very important (1000 grit sandpaper)
Power Supply
DIY TPM http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine2.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine3.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine4.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine5.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine6.html http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine7.html
Concepts and Research
Pulse and pulse reverse plating—Conceptual, advantages and applications File:EA-v53-8-p3313.pdf
Role of Additives in the Bright Copper Plating from Acid Copper Sulfate Bath and the History File:0611.pdf
Aspect-Ratio-Dependent Copper Electrodeposition Technique for Very High Aspect-Ratio Through-Hole Plating http://dx.doi.org/10.1149/1.2189238
The Theory behind Pulse Plating Reversal Current File:RP theory.pdf
Prototype of the Pulse Plating controller.
Another plating setup
