Laminar electrical component with magnesium orthoborate
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United States of America Patent
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-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Aug 7, 1985
filing date -
Aug 7, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A laminar electrical component has at least one ceramic dielectric layer of from 85 to 100 mole percent magnesium orthoborate (Mg.sub.3 B.sub.2 O.sub.6) which has a low dielectric constant and a high Q. A monolithic ceramic capacitor may have a predominantly magnesium orthoborate body with lithium oxide as a flux so that sintering may be as low as 850.degree. C. and in a reducing atmosphere accommodating buried copper electrodes. A predominantly Mg.sub.3 B.sub.2 O.sub.6 multi-level printed wiring substrate of low dielectric constant can include tightly adhered layers of a high dielectric constant ceramic for making buried high capacity filter capacitors, and can also include cofired base metal conductors.
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