On the application of variable frequency microwave technology for processing of individual surface mount components
Tilford, Tim, Sinclair, Keith I., Bailey, Christopher, Pavuluri, S. and Desmulliez, Marc P.Y. (2009) On the application of variable frequency microwave technology for processing of individual surface mount components. In: 2009 International Conference on Electronics Packaging.Full text not available from this repository.
Dual-section variable frequency microwave systems enable rapid, controllable heating of materials within an individual surface mount component in a chip-on=board assembly. The ability to process devices individually allows components with disparate processing requirements to be mounted on the same assembly. The temperature profile induced by the microwave system can be specifically tailored to the needs of the component, allowing optimisation and degree of cure whilst minimising thermomechanical stresses.
This paper presents a review of dual-section microwave technology and its application to curing of thermosetting polymer materials in microelectronics applications. Curing processes using both conventional and microwave technologies are assessed and compared. Results indicate that dual-section microwave systems are able to cure individual surface mount packages in a significantly shorter time, at the expense of an increase in thermomechanical stresses and a greater variation in degree of cure.
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