Last week Jeff wrote; [ I need to implement ink marking on nickel and gold surfaces for IC [ components. Can anyone advise me on, [ [ a. Type of ink (for pad-mark) [ b. Surface pre-treatment process [ [ that would ensure that the ink would meet the MIL-std mark permanancy test [ requirements ? Appreciate your expert advise ! [ [ Thanks [ [ Jeff-MH Tan [ Snr Process Engineer [ [log in to unmask] We mark PB's and ID-plates with Hysol M-0-N (ink + catalyst A). Marking is done by hand (pen) and machanical (pad). The ink is iaw MIL-I-43553 (Epoxy based) and permanent acc. to MIL-STD-130. By my knowledge, no special pre-treatment of the surface is necessary. Try contacting Hysol Div., Dexter Corp. Industries (Adress on the Net?) for the proper data. Good luck! Ivo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ivo de Rooij Manufacturing Process Engineer SMT/THT @ __ __ @ @ ______ _|________ _|__|_|__|_| _____|_______| ____ |___ | // | | | // | | | || // || | ====| _____ o.|====| |________|o|==========| o. _______ ||____|| _ |==== | ________ | | ________ | |___._| | |_______| | | _ | ||________|| |_|________|_| | | |_____________|______|___| || || || || | | || || || || Fokker Elmo BV (Fokker Aviation) [log in to unmask] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.