公开(公告)号：SG84600A1

公开(公告)日：2001-11-20

申请号：SG200002894

申请日：2000-05-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JOSEPH ANTHONY ABYS ,  CONOR ANTHONY DULLAGHAN ,  PETER EPSTEIN ,  JOSEPH JOHN MAISANO JR

IPC: C25D3/00 ,  C01G55/00 ,  C25D3/50 ,  C25D3/56 ,  C25D21/12 ,  C25D21/18 ,  C25D

Abstract: This invention provides for a palladium replenisher comprising a complex of palladium tetraammine sulfate made according to a process whereby the processing temperature is maintained at or below about 115 DEG C in the presence of excess nitrate solution. The replenisher of the invention is used to replenish depleted palladium during palladium electroplating to maintain the palladium concentration in the bath within from about 5 to about 10 weight percent of recommended plating bath levels.