Laminate and circuit board

Provided are a laminate including a silver layer on a substrate, in which the silver layer includes a surface in which Kurtosis of a roughness curve satisfies at least one of Condition (i) the change rate of Kurtosis is greater than or equal to 50% under conditions of a temperature of 85° C. and a r...

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Bibliographische Detailangaben
1. Verfasser: Mori, Akihito
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Provided are a laminate including a silver layer on a substrate, in which the silver layer includes a surface in which Kurtosis of a roughness curve satisfies at least one of Condition (i) the change rate of Kurtosis is greater than or equal to 50% under conditions of a temperature of 85° C. and a relative humidity of 85% after 240 hours have elapsed and Condition (ii) the change rate of Kurtosis is greater than or equal to 200% under conditions of a temperature of 85° C. and a relative humidity of 85% after 480 hours have elapsed, and a circuit board in which an electronic component is mounted on the surface of the laminate through a conductive joint portion.