IPC SM-840C

IPC SM-840C Qualification and Performance of Permanent Polymer Coating (Solder Mask) for Printed Boards, Includes Amendment 1
standard by Association Connecting Electronics Industries, 01/01/1996

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Full Description

Streamlines solder mask classes into two classifications: H (high reliability) and T (telecommunications). IPC-SM-840C also integrates Bellcore requirements (class T) and provides minimum voltage breakdown, defines mask formulation latitude, adds new mask chemistries and more.