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ks bonding problems gold wire on al pads

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ks bonding problems gold wire on al pads | 7 November, 2017

Hi I'm new to the world of wire bonding. I seem to have some sort of pad contamination Preventing gold wire from bonding to aluminum pats. There appears to be a dozen microns size particles. And a slight crackling of the surface at 500 X. I am sending it off for elemental EDX. Are there any process Settings I can use to burn through the debris

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