T/CSTM 00991-2023 Test methods for coating/plating used in high-speed printed boards
T/CSTM 00991-2023 Test methods for coating/plating used in high-speed printed boards
Basic Information
Scope
Scope: This document specifies the test methods for coatings/plating layers used on high-speed printed circuit boards, including thickness, roughness, solderability, characteristic impedance, and insertion loss. This document is applicable to coatings/plating layers used on high-speed printed circuit boards, mainly including: organic solderable protective layers (hereinafter referred to as OSP), tin plating, silver plating, chemical nickel gold, chemical nickel palladium gold, and electroplated nickel gold. Surface coatings/plating layers used in other industries can be used for reference. Main technical content: This document specifies the test methods for coatings/plating layers used on high-speed printed circuit boards, including thickness, roughness, solderability, characteristic impedance, and insertion loss. This document is applicable to coatings/plating layers used on high-speed printed circuit boards, mainly including: organic solderable protective layers (hereinafter referred to as OSP), tin plating, silver plating, chemical nickel gold, chemical nickel palladium gold, and electroplated nickel gold. Surface coatings/plating layers used in other industries can be used for reference.