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US 5,347,426 AGranted
Electronic device including a passive electronic component
AssigneePechiney Recherche
InventorsSalim Dermarkar, Xavier Dumant, Michel Lebailly
Life of this patent
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Abstract
An electronic device comprising at least one heat-generating electronic component and a passive electronic component in association with the heat generating component. The passive component comprises a porous preform of green silicon carbide or polygranular graphite, and a metal filling the porosities of the preform which can be aluminum, an aluminum alloy, magnesium or a magnesium alloy. The preform forms about 50 to 90% by volume of the passive component.
Claims8
An electronic device comprising:
- a) at least one heat-generating electronic component;
- and
- b) a passive electronic component supporting said at least one heat-generating electronic component, said passive electronic component comprising:
- a porous preform comprising particles of green silicon carbide or polygranular graphite, and
- a metal filling the porosities of said preform by penetration of metal in liquid form followed by solidification, said metal selected from the group consisting of aluminum, an aluminum alloy, magnesium and a magnesium alloy,
- said preform forming about 50 to 90% by volume of said passive electronic component,
- said passive electronic component being formed of an isotropic composite made of two randomly oriented interpenetrating networks of a ceramic phase and a metallic phase, and having a coefficient of thermal expansion below about 1.3.times.10.sup.-6 K.sup.-1 at 30.degree.-400.degree. C. and a density below about 3100 kg.m.sup.-3.
4 more elements
An electronic device comprising:
- a) at least one heat-generating electronic component;
- and
- b) a passive electronic component supporting said at least one heat-generating electronic component, said passive electronic component comprising:
- a porous preform comprising particles of green silicon carbide or polygranular graphite, and
- a metal filling the porosities of said preform by penetration of metal in liquid form followed by solidification, said metal selected from the group consisting of aluminum, an aluminum alloy, magnesium and a magnesium alloy,
- said preform forming about 50 to 90% by volume of said passive electronic component,
- said passive electronic component being formed of an isotropic composite made of two randomly oriented interpenetrating networks of a ceramic phase and a metallic phase.
4 more elements
Dependencies are inferred from the claim text.