Title of article
Laser cleaning of printed circuit boards
Author/Authors
W.D. Song، نويسنده , , M.H. Hong، نويسنده , , Y.F. Lu، نويسنده , , T.C. Chong، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
5
From page
463
To page
467
Abstract
Laser cleaning of printed circuit boards (PCB) has been studied in this paper. It is demonstrated that laser cleaning is a powerful tool to remove resin contaminants from printed circuit boards. A Nd:YAG laser is used as a light source for laser cleaning. The beam profile of the YAG laser is reshaped and homogenized into a square beam with uniform energy distribution in the focal plane of the focusing lens by using an optical system. The printed circuit board surfaces before and after laser cleaning were inspected by an optical microscope, analysed by X-ray photoelectron spectroscopy and monitored by an acoustic wave detection method. The cleaning threshold is about 75 mJ/cm2 and no damage is observed below 400 mJ/cm2.
Keywords
Printed circuit board , Resin contaminants , Acoustic wave , Laser cleaning
Journal title
Applied Surface Science
Serial Year
2003
Journal title
Applied Surface Science
Record number
999858
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