Motorola Corporation

Littelfuse, Inc.

Brian J Bullock

David J Krueger

George Amos Carson

Honorio S Luciano

Sean Xin Wu

Danniel Roman Gamota

A thin film, surface-mounted fuse which comprises two material subassemblies. The first subassembly comprises a fusible link, its supporting substrate and terminal pads. The second subassembly comprises a protective, photoimageable layer which overlies the fusible link so as to provide protection from impacts and oxidation. The photoimageable layer is a low profile coating.

Chip protector surface-mounted fuse device

A microelectronic assembly (10) includes an integrated circuit component (14) attached to a polymeric substrate (12) by a plurality of unencapsulated solder bump interconnections (16). A collar (18) is affixed to the polymeric substrate (12) about the integrated circuit component (14) and is formed of an inorganic material having a coefficient of thermal expansion less than that of the substrate (12). The collar (18) constrains thermal expansion of the polymeric substrate (12) in the die attach region (22), thereby lessening any deleterious effects caused by a mismatch in the thermal expansion of the polymeric substrate (12) and the integrated circuit component (14).

Microelectronic assembly with collar surrounding integrated circuit

Growing community of inventors

Elmhurst, IL, United States of America

Brian J Bullock