Material for lead frame

Abstract

Abstract PURPOSE:To provide a material for lead frames of IC made of an inexpensive low Cr-Fe alloy consisting of prescribed percentages Cr, C, Si, Mn and Al and the balance essentially Fe and having superior corrosion resistance and platability. CONSTITUTION:This material for lead frames consists of, by weight, 5.0-10.5% Cr, <=0.05% C, <=0.50% Si, <=0.30% Mn, <=0.05% Al and the balance essentially Fe. In order to further improve the corrosion resistance of the alloy, <=0.6% in total of one or more among <=0.6% each of Nb, Ti, Ta and Zr may be added. The platability can be further improved by adding <=3.0% Ni and/or <=2.0% Cu besides said components.

Inventors

• 👤 Shinichiro Yahagi
• 👤 慎一郎 矢萩

Bibliographic Details