Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


SOLDER MASK THICKNESS

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#68365

SOLDER MASK THICKNESS | 6 March, 2013

What is the minimum solder mask thickness required for Class 3 products. We are insisting fabricator of the pcb shop to use only spray coated solder mask. The SM thickness on the epoxy is about 17 microns, In the center of the tracks are 8 microns and at the knee it is 4 microns.

The boards are for high reliability applications.

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#68367

SOLDER MASK THICKNESS | 6 March, 2013

Solder mask thickness requirement is defined by the procurement specification. There is no written solder mask thickness as a standard. Some of say evaluate it with 500 VDC. It depends on withstanding voltage.

BR, davef

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