Nihon's Keith Sweatman to Present at SMTA International

18th September 2012

ES Admin

0 0

Nihon Superior has announced details of its participation in the Technical Program of SMTAI 2012, which is being held in the Walt Disney World Dolphin Hotel, Orlando, FL, from October 14-18, 2012. The paper, “Optimizing Solder Paste for Void Minimization with Vacuum Reflow” will be presented in Session SMT7, 4-5:30 p.m. on Wednesday, October 17 in the Asia 2 meeting room.

Senior Technical Advisor Keith Sweatman will be presenting a paper co-authored with Nihon Superior’s R&D Manager Takashi Nozu and President Tetsuro Nishimura, “Optimizing Solder Paste for Void Minimization with Vacuum Reflow”, which will report a study on the factors in solder paste formulations that affect the incidence of voids in solder joints that can impair the performance of high power semiconductors by interfering with heat transfer. Of particular interest is the interaction of the solder paste with the new process of vacuum reflow that can reduce the incidence of voiding to levels not previously achievable.

Keith Sweatman and Nihon Superior USA’s Keith Howell also are amongst the 18 authors of Part III of a paper reporting the results of the thermal fatigue testing of solder alloys that have been introduced to offer a lower cost alternative to the high-silver “SAC” alloys or to provide better resistance to drop impact. This testing has been undertaken as part of the iNEMI Pb-Free Alloy Characterization Project. Part III “Thermal Fatigue Results for Low Ag Alloys” includes results for Nihon Superior silver-free alloy SN100C.

Keith Sweatman also will be co-chairing with Celestica’s Jeff Kennedy the session on backward compatibility which includes several interesting papers on the consequences of using tin-lead solders for the assembly of BGA with lead-free solder balls.

The paper “iNEMI Pb-Free Alloy Characterization Project Report: Part III - Thermal Fatigue Results for Low Ag Alloys” will be presented in Session LF1, 8-10 a.m. on Thursday, October 18 in the Australia 3 meeting room.

Session SMT6, “BGA Backwards Compatibility? - The Mixed Metal Dilemma” will be presented from 2-3:30 p.m. on Wednesday, October 17 in the Asia 2 meeting room.