Zobrazeno 1 - 10
of 53
pro vyhledávání: '"D. R. Frear"'
Publikováno v:
Journal of Electronic Materials. 49:3251-3258
Solder joints can experience fatigue cracking at the interface between the solder and substrate during thermal cycling due to the difference in thermal expansion between joined components. In order to strengthen the interfacial region and prevent cra
Publikováno v:
Journal of Electronic Materials. 49:4466-4467
Autor:
D. R. Frear, J. W. Jang
Publikováno v:
Journal of the Korean Physical Society. 59:402-407
High strain-rate drop impact tests were performed for land grid array (LGA) packages with (electroless nickel immersion gold) ENIG metallization and lead-free solder interconnects. Sn-4Ag-0.5Cu (in wt%, SAC405), Sn-3.5Ag (in wt%), and Sn-0.7Cu (in wt
Autor:
D. R. Frear
Publikováno v:
Journal of Materials Science: Materials in Electronics. 18:319-330
Consumer electronic applications are the primary target of the Pb-free initiative and package assembly and performance is affected by the move from eutectic Sn-Pb to Pb-free solder alloys. This paper outlines the key issues and mitigation possibiliti
Autor:
D. R. Frear, S. Thomas
Publikováno v:
MRS Bulletin. 28:68-74
IntroductionThe trend for microelectronic devices has historically been, and will continue to be, toward a smaller feature size, faster speeds, more complexity, higher power, and lower cost. The driving force behind these advances has traditionally b
Autor:
J. W. Jang, T. Y. Lee, Kejun Zeng, King-Ning Tu, S. M. Kuo, D. R. Frear, W. J. Choi, J. K. Lin, Jorma Kivilahti
Publikováno v:
Journal of Materials Research. 17:291-301
Intermetallic compound (IMC) growth during solid-state aging at 125, 150, and 170 °C up to 1500 h for four solder alloys (eutectic SnPb, Sn–3.5Ag, Sn–3.8Ag–0.7Cu, and Sn–0.7Cu) on Cu under bump metallization was investigated. The samples wer
Publikováno v:
JOM. 53:28-33
A variety of lead-free solder alloys were studied for use as flip-chip interconnects including Sn-3.5Ag, Sn-0.7Cu, Sn-3.8Ag-0.7Cu, and eutectic Sn-37Pb as a baseline. The reaction behavior and reliability of these solders were determined in a flip-ch
Publikováno v:
Journal of Applied Physics. 89:4843-4849
The reaction kinetics of eutectic SnPb solder on Cu were studied and compared in the liquid state at 200 to 240 °C and in the solid state aged at 125–170 °C. The ternary phase diagrams of SnPbCu, the morphology of intermetallic compound (IMC), an
Publikováno v:
Journal of Applied Physics. 89:3189-3194
The electromigration of eutectic SnPb solder interconnects between a Si chip and a FR4 substrate was studied at 120 °C for up to 324 h with current stressing of 104 amp/cm2. Hillocks were observed at the anode and voids at the cathode. The dominant
Autor:
D. R. Frear
Publikováno v:
e & i Elektrotechnik und Informationstechnik. 118:81-86
A variety of Pb-free solder alloys have been proposed for use as interconnects for electronic packaging including Sn−Ag, Sn−Cu, Sn−Ag−Cu, Sn−Ag−Bi, and Sn−Sb, among others. This paper presents a review of the behavior of promising Pb-fr