NDLI: Free Air Ball Forming Process Parameter Analysis for Wire Bonder

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Chen, Jau-Liang Chang, Hsu-Yang
Copyright Year	2002
Abstract	In this paper, we are focusing on the FAB forming technology for fine pitch wire bonding. The parameters that affect the FAB formation include: 1) tail length; 2) spark gap; 3) Electric flame-off (EFO) voltage, current, time; 4) relative position between electrode plate and tail; 5) wire material; and 6) type of capillary. Except the last two items, all the other parameters can be quantified for analysis. By using Taguchi method it was found that EFO time and EFO current are the most important parameters that affect the formation free-air ball. The error-back-propagation neural network was then used to predict suitable EFO time and current setting. The main objective in this research is to find a suitable rule for parameters setting in order to control the FAB ball size as required. The result can be used in the future for optimal parameter setting and prediction of FAB formation.
Sponsorship	Manufacturing Engineering Division
Starting Page	499
Ending Page	504
Page Count	6
File Format	PDF
ISBN	079183641X
DOI	10.1115/IMECE2002-33720
Volume Number	Manufacturing
Conference Proceedings	ASME 2002 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2002-11-17
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Neural network Free air ball (fab) Electrical flame-off (efo) Taguchi method Electrodes Errors Flames Wire bonding Artificial neural networks Taguchi methods Wire
Content Type	Text
Resource Type	Article

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