Characteristics of Parylen AF4 coating:Specialties:Unmatched UV stabilityExcellent thermal stability at high service temperature (350)Unmatched oxidation stabilityCompletely conformal coatingSuperior crevice penetration, pin hole freeAnti-saline damageAnti-stick ionBarrier properties:Chemical insolubility and solvent resistantLow water absorptionHydrophobic propertiesLow gas permeability , no out-gassingPhysical & mechanical properties:TransparentLight-weight and ultra-thinLow CTELow coefficient of frictionGood dry lubricityAbrasion resistanceStabilization of components and structuresParticulate immobilizationElectrical properties:Electrical insulationHigh dielectric strengthHigh volume resistivity ,ohm-cmLow dissipation factorLow dielectric constantMitigation of tin whisker growthBiocompatibility and bio-stabilityUSP class VIMicroorganism resistanceParylen AF4is extremely useful in high temperature applications and those in which long-term UV stability is required.AerospaceMilitaryElectronicMedicalIndustrialSemiconductor (3D IC TSV electrical insulation , AMOLED De-bonding layer , Barrier layer )Bio-MEMS electrode protection filmEWD (Electro Wetting Device) Liquid lens