Properties of Copper Alloy Lead Frame Materials

Leaders in lead frame industry - Shenzhen YanMing Plate Process Co.,Ltd
Today I will introduce the characteristics of copper alloy lead frame materials to you. Our Dummy Lead Frame series products have won the favor of our customers with strict production process and superior quality.
Copper alloys for lead frames are roughly divided into copper-iron series, copper-nickel-silicon series, copper-chromium series, copper-nickel-tin series (JK--2 alloy), etc., ternary, quaternary and other multi-component copper alloys It can achieve better performance and lower cost than traditional binary alloys. Copper-iron alloys have the most grades. They have good mechanical strength, stress relaxation resistance and low creep. They are a kind of good lead. frame material. Due to the needs of lead frame production and packaging applications, in addition to high strength and high thermal conductivity, materials are also required to have good brazing performance, process performance, etching performance, oxide film bonding performance, etc. The material is developing in the direction of high strength, high conductivity and low cost. A small amount of various elements are added to copper to improve the strength of the alloy (so that the lead frame is not easily deformed) and comprehensive performance without significantly reducing the conductivity. Materials with a strength of more than 600Mpa and a conductivity greater than 80% IACS are research and development hotspots. And the copper strip is required to have a high surface, precise shape, uniform performance, and the thickness of the strip is continuously thinning, gradually thinning from 0.25mm to 0.15mm, 0.1mm, and ultra-thin and special-shaped from 0.07 to 0.07. change.