Rev.2, May 2001, page 7 of 7
Solder Mounting Method
1. Small and light surface-mount packages require spicial attentions on solder mounting.
On solder mounting, pre-heating before soldering is needed.
The following figure show an example of infrared rays refow.
2. The difference of thermal expansion coefficeient between mounted substrates and IC leads may cause a
failure like solder peeling or soler wet, and electrical characteristics may change by thermal stress.
Therefore, mounting should be done after sufficient confirmation for especially in case of ceramic
substrates.