IPC-4552B-2021 EN印制板化学镀镍 浸金(ENIG)镀覆性能规范 英文版.pdf,IPC-4552B 2021 - April Specification for Electroless Nickel/Immersion Gold (ENIG) Plating for Printed Boards Supersedes IPC-4552A August 2017 An international standard developed by IPC The
1. Minimum dielectric thickness for IPC class 2 and class 3: 2.56 mil Minimum dielectric thickness for IPC class 2 and class 3 The minimum dielectric thickness requirement for IPC class 3 and class 2 has been lowered to2.56 mil. The organization made this change to facilitate the laser drilli...
IPC-4552B-2021 EN印制板化学镀镍 浸金(ENIG)镀覆性能规范 英文版.pdf,IPC-4552B 2021 - April Specification for Electroless Nickel/Immersion Gold (ENIG) Plating for Printed Boards Supersedes IPC-4552A August 2017 An international standard developed by IPC The