Presentation 1994/11/25
Fluxless soldering technology
Toru Nishikawa, Masahiro Ijuin, Ryohei Satoh, Yasuhiro Iwata, Mitsunori Tamura, Mitsugu Shirai,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This paper describes a reflow soldering process not requiring the use of flux.Initially,we developed a process in which an argon- atom sputter-etching techniques employed to clean the surface,and reoxidation is prevented by carrying out aligning,mounting,and reflowing in an inert gas in a vacuum chamber.Then,for purposes of simplification,we developed a more convenient process in which, following the surface cleaning,the aligning and mounting are done in an atomosphere of ordinary air.This causes the reoxidation on surfaces activated by sputter-etching to be approximately the same both in a vacuum and in an air at room temperature.The thin oxide film is easy to break by volume expansion when it is melted.This allows that solder can wet.The basic characteristics and self- alignmentability were examined.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) fluxless / soldering / flip chip / argon beam / sputter etching
Paper # ICD94-148
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Conference Date 1994/11/25(1days)
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Paper Information
Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Fluxless soldering technology
Sub Title (in English)
Keyword(1) fluxless
Keyword(2) soldering
Keyword(3) flip chip
Keyword(4) argon beam
Keyword(5) sputter etching
1st Author's Name Toru Nishikawa
1st Author's Affiliation Production Engineering Research Laboratory,Hitachi,Ltd.()
2nd Author's Name Masahiro Ijuin
2nd Author's Affiliation Production Engineering Research Laboratory,Hitachi,Ltd.
3rd Author's Name Ryohei Satoh
3rd Author's Affiliation Production Engineering Research Laboratory,Hitachi,Ltd.
4th Author's Name Yasuhiro Iwata
4th Author's Affiliation General Puropose Computer Division,Hitachi,Ltd.
5th Author's Name Mitsunori Tamura
5th Author's Affiliation General Puropose Computer Division,Hitachi,Ltd.
6th Author's Name Mitsugu Shirai
6th Author's Affiliation General Puropose Computer Division,Hitachi,Ltd.
Date 1994/11/25
Paper # ICD94-148
Volume (vol) vol.94
Number (no) 361
Page pp.pp.-
#Pages 8
Date of Issue