IPC-SM-840E (CD-ROM) Single User
Qualification and Performance of Permanent Solder Mask
Englisch. 19 pages. Stand:Dezember 2010. Keine Druckberechtigung
Establishes the requirements for the evaluation of liquid and dry film solder mask material and for the determination of the acceptability of use on a standard printed board system. IPC-SM-840 provides two classes of requirements, T and H, to reflect functional performance requirements and testing severity based on industry/end use requirements. Coverage is given to adhesion, material qualification, resistances to solvents, and electrical requirements. Revision E incorporates requirements for fl exible cover materials used as a flexible dielectric protective layer over etched conductors and other conductive features.