Korea Advanced Institute of Science and Technology

Korea Electronics Technology Institute

Korea Institute of Industrial Technology

Hoseo University

Mk Electron Co., Ltd.

Won Sik Hong

Jae Hong Lee

Hui Jung Kim

Chang Woo Lee

Jeong Tak Moon

Sung Jae Hong

Young Woo Lee

Jae Won Chang

Jung Hwan Bang

Yong Ho Ko

Ja Hyun Koo

Hyuck Mo Lee

Keun Soo Kim

Provided are a lead-free solder, a solder paste, and a semiconductor device, and more particularly, a lead-free solder that includes Cu in a range from about 0.1 wt % to about 0.8 wt %, Pd in a range from about 0.001 wt % to about 0.1 wt %, Al in a range from about 0.001 wt % to about 0.1 wt %, Si in a range from about 0.001 wt % to about 0.1 wt %, and Sn and inevitable impurities as remainder, a solder paste and a semiconductor device including the lead-free solder. The lead-free solder and the solder paste are environment-friendly and have a high high-temperature stability and high reliability.

Lead free solder bumps

Growing community of inventors

Gyeonggi-do, South Korea

Won Sik Hong