Semiconductors and Sensors

Copper Alloys for Lead Frames

Backgrounds and Trends

Lead frames are thin metal plates used for interconnects inside microchips.
As semiconductor packages become more compact and low-profile, the lead frames themselves must also be made thinner.

Material Requirements

High-strength materials are needed to make thinner lead frames. The materials must also provide excellent flatness and oxide layer adhesion, and must have a low elongation ratio.

Corson alloys for lead frames