Share Email Print

Proceedings Paper

Reflow soldering of fine-pitch devices using a Nd:YAG laser
Author(s): Thomas J. Glynn; Aidan J.H. Flanagan; R. Michael Redfern
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The drive towards miniaturization in electronics assembly has produced new devices with small lead pitch and high lead count which are difficult to bond reliably to substrates using conventional mass soldering technology. Micro-soldering using lasers has the potential to solve many of the problems involved. The results of Nd:YAG laser soldering trials on a ceramic chip with Kovar leads spaced at 0.025 in. are described. The results are compared with the predictions of a detailed finite-element thermal model of the systems and also with real-time thermocouple measurements of the temperature reached at specific locations during the soldering step. Implications for future work in this area are discussed.

Paper Details

Date Published: 1 December 1991
PDF: 6 pages
Proc. SPIE 1598, Lasers in Microelectronic Manufacturing, (1 December 1991); doi: 10.1117/12.51040
Show Author Affiliations
Thomas J. Glynn, Univ. College Galway (Ireland)
Aidan J.H. Flanagan, Univ. College Galway (Ireland)
R. Michael Redfern, Univ. College Galway (Ireland)

Published in SPIE Proceedings Vol. 1598:
Lasers in Microelectronic Manufacturing
Bodil Braren, Editor(s)

© SPIE. Terms of Use
Back to Top