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Wearable PCB design requirements concern the base material

Mind Electronics Limited | Updated: Jun 06, 2016

PCB made up of laminated, laminated fiber reinforced Epoxy (FR4), polyimide or Rogers (Rogers) materials or other laminated material. Between different layers of insulating material called prepreg.

Wearable devices require a high level of reliability, so when facing FR4 PCB designers (with the highest price/performance PCB material) or the choice of more advanced and more expensive materials, which will become a problem.

If the wearable application require high-speed, high-frequency PCB materials, FR4 might not be the best choice. FR4 dielectric constant (Dk) is 4.5, the Rogers 4003 more advanced series of the dielectric constant of the material is 3.55, brother Rogers 4350 series of dielectric constant of 3.66.