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.
IPC-9121 AM1 is an amendment to IPC-9121 which provides updates to the Hole Preparation/Protection and Interconnect Formation sections, covering troubleshooting topics and guidance on nonconductive plugging paste, microvias and pattern plating rim voids. IPC-9121 AM1 also includes a new section on Flexible Circuits.
The IPC-1791-Am1 provides revisions and clarifications for requirements pertaining to CAGE Code, citizenship, security, foreign person access, traceability records and NIST SP 800-171 compliance.
The Amendment 2 to IPC-4103A-WAM1 made four fundamental changes to the base standard: All references to the epoxy curative of DICY (dicyandiamide) were removed; Opaque foreign inclusions were more specifically defined and limited; The optional properties of thermal conductivity for both laminates and bonding layers were added; and The dielectric constant (permittivity) ranges were specifically...
Amendment 1 to IPC/WHMA-A-620B This amendment provides resolution to some internal conflicts, aligns common criteria to other IPC standards, and corrects some editorial errors. This amendment is only to be used in conjunction with IPC/WHMA-A-620 Revision B, October 2012. Follow your company policy and procedures to make pen and ink changes or notations to the published IPC/WHMA-A-620 Revision B...