GJB 362 General Specification for Rigid PCB and GJB 7548 General Specification for Flexible PCB are two important standards in the field of military printed circuit board(PCB).In the promulgating of GJB 362C-2021 and GJB 7548A-2021,many users still have some questions about the understanding and application of the standards.This paper mainly introduces the basic situation of the revision of the two standards,and the author's understanding of the application of the standards,the understanding of part of the standard and existing problems.We hope to help practitioners strengthen the understanding and application of the standard,and hope that the designer,manufacturer and user of military PCB can reach the same understanding of the standards,so that they can help everyone solve the relevant problems in the work.
national military standardprinted circuit boardstandard implementationstandard understanding
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