Nano Coating

Application Threshold

Processing requires complete surface cleanliness because oils or particulate contamination prevent adhesion between the deposition layer and the board. Technicians verify the success of the treatment through water contact angle measurements on representative coupons from each batch. Acceptance criteria typically demand a minimum contact angle to prove the hydrophobic nature of the surface.

Low surface energy ensures droplets bead and roll off the sensitive electronic paths. Any breach in this barrier allows dendrite growth between closely spaced conductive traces. Testing protocols often include salt fog exposure or humidity chamber cycles to simulate harsh field environments.

Standard evaluation methods quantify the reduction in ionic conductivity across the treated surface compared to uncoated control boards.

Deposition Variance

Chemical vapor deposition creates a more consistent thickness profile across complex 3D geometries than traditional dip coating or spray methods. Automated systems monitor gas pressure and discharge power to maintain the reaction kinetics required for uniform coverage. Thickness fluctuates if the reactor geometry leads to inconsistent plasma distribution around the components.

Automated inspection tools detect gaps in the dielectric layer by measuring electrical impedance at specific test points. High frequency signal integrity remains undisturbed because the film thickness stays in the sub-micron range. This deposition technique improves reliability in high humidity environments without affecting the mechanical fit of components.