Patent ID: 8540903
Filing Date: 2013-09-24
Classification: H01B,H05K,Y10T

Abstract:
1. An electrically conductive paste comprising: from 75 to 85% by weight of an electrically conductive filler ingredient comprising alloy particles A made of a combination of Sn and one or more elements selected from the group consisting of Bi, In, Ag and Cu, and alloy particles B made of a combination of Sn and one or more elements selected from the group consisting of Bi, In, Ag and Cu; a thermosetting resin ingredient; a hardening agent ingredient; a flux ingredient; and a viscosity adjusting/thixotropy imparting additive, wherein a content of the alloy particles B is 3 to 20% by weight based on 100% by weight of the electrically conductive filler ingredient; a melting point of the alloy particles B is at least 10° C. and at most 50° C. lower than a melting point of the alloy particles A; and the melting point of the alloy particles A is in a range from 95 to 220° C. and is lower than a hardening temperature of the thermosetting resin ingredient.