International Electrotechnical Commission

Qualification and performance specification of permanent solder mask and flexible cover materials - Edition 1.0
 N PAS 61249-8-5

Annotation

This specification shall define the criteria for and method of obtaining the maximum information about and confidence in cured permanent solder mask and cover material under evaluation with the minimum of test redundancy.

This specification shall establish the requirements for:

- The evaluation of solder mask and cover materials

- The conformance of solder mask and cover material properties

- The qualification of the solder mask and cover material via the appropriate test substrate

- The qualification assessment of the solder mask and cover material in conjunction with the production printed board process

Purpose

This specification shall establish the requirements, based on applicable test methods and conditions, for the evaluation of a solder mask and cover material and for the determination of the acceptability of use on a printed board. These same requirements shall also be used to qualify a printed board production process based on conformance criteria defined by the reliability requirements of the end use environment. Acceptability and/or verification criteria of the production printed board shall be determined in accordance with the applicable performance requirements (e.g., IPC-6012, IPC-6013, IPC-6018, etc.).

The solder mask materials described herein, when applied to the printed board substrate are intended to prevent and/or minimize the formation and adherence of solder balls, solder bridging, solder build-up and physical damage to the printed board substrate. The solder mask material shall retard electromigration and other forms of detrimental or conductive growth.