Patent ID: 8188373

Claim:
A device for mounting electrical components, the device comprising: a printed circuit board having a planar dimension many times greater than any one electrical component mounted thereon, the printed circuit board comprising: a surface conductive layer configured to interface with the electrical components via at least one lead-free solder component, wherein the surface conductive layer comprises copper; a strain resistant cap layer configured to engage the surface conductive layer, wherein the strain resistant cap layer comprises polyimide and an inorganic filler for increasing the strength of the cap layer, the tensile strength of the cap layer being about 25,000-35,000 psi, wherein the elongation of the cap layer is about 15-35%; and at least one rigid insulating layers laminated to the strain resistant layer without a bonding layer, wherein the at least one rigid insulating layers extends throughout the entire length of the printed circuit board such that the entire printed circuit board defines a rigid printed circuit board; wherein the at least one rigid insulating layer has a tensile strength which is at least 1.3 times greater than the strain resistant cap layer.