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Amendment

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Document #:
Revision
Original Version
Product Type
Released:  01/01/2016
Language
English
Current Revision
IPC-4556-AM1 is the amendment 1 to the standard IPC-4556 and made the following changes to the base specification: a) It added the absolute value of the maximum thickness for the immersion gold of 0.070 μm [2.8 μin] that accompanies the statistically valid minimum immersion gold thickness; b) It added two more photomicrograph images to provide better information on identifying nickel hyper...
Document #:
Revision
Original Version
Product Type
Released:  09/01/2013
Language
English
Current Revision
IPC-4554, "Specification for Immersion Tin Plating for Printed Circuit Boards," is the third document in a series of specifications [the first two are: IPC-4552 which addresses electroless nickel/immersion gold (ENIG) and IPC-4553 which addresses immersion silver (IAg)] that set the requirements for printed circuit board surface finishes that are alternates to eutectic tin-lead. IPC-4554, a full...
Document #:
Revision
Original Version
Product Type
Released:  10/08/2020
Language
Chinese
Current Revision
本手册可供任何生产制造或采购印制板的人员作为基本资源。数百张真实的全彩色照片聚焦了650多个印刷电路板工艺缺陷,每个缺陷都有其分析原因和纠正措施。IPC-9121是取代1997年12月发布 的IPC-PE-740A中的PCB部分。2016年3月发布9121英文母标准,2018年年4月发布修订本1,修订本1于2020年4月翻译。详情参见目录。