Hello Technetters ;

 Could anyone help me to instruct W-3 of Electrochemicals as additives for
microetchant?
 We once used peroxide/sulfuric with W-3 as final etchant, but not in use.
 The W-3 is the complex of stabilizer, inhibitor and etch promotor.
 I tried so many times conversing mixed ratio of sulfuric acid, H2O2 with W-
3 to get 1~2 micron meter per
 1 min. dipping in solution, but couldn't get good result. I'd like to use
W-3 as microetchant additives for
 OSP treatment.
 Any advice would be greatly appreciated.

 Tal Young-Kim
 R&D Dept.
 Doosan Electro-Materials Co., Ltd.

 email [log in to unmask]
 Tel +82-331-260-0031
 Fax +82-331-260-0099

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