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Document #:
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Original Version
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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:  01/01/2016
Language
English
The Amendment 1 to IPC-4556 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 corrosion; c) It added the basis of...
Document #:
Revision
Original Version
Product Type
Released:  06/12/2012
Language
English
Specification for Electroless Nickel/Immersion Gold (ENIG) Plating for Printed Circuit Boards Amendment 1 to IPC-4552 replaces the Table 3-1 Requirements of Electroless Nickel Immersion Gold Plating plus also replaces all of sections 3.2.1 Immersion Nickel Thickness and 3.2.2 Immersion Gold Thickness in the original release of the IPC-4552. The Amendment 1 permits the use of thinner gold (≥4 µm...
Document #:
Revision
Original Version
Product Type
Released:  09/01/2012
Language
English
Specification for Electroless Nickel/Immersion Gold (ENIG) Plating for Printed Circuit Boards Amendment 2 to IPC-4552 is a new section in the original release of the IPC-4552. The Amendment 2 provides the “rules” by which any rework and/or repair of a printed board's ENIG surface finish is allowed. Effective September 2012.