Hvad er den dielektriske konstant

Da fpc materialer er opdelt i to typer, polyimid (Polyimid) og polyester (Polyester), er vi nødt til at adskille dem her.

1. Polyimid

Polyimide (PI for short) is the most commonly used thermally cured insulating material in flexible circuit processing. Material thicknesses typically range from 12.5 μm (0.5 mil) to 125 μm (5 mil). Divided into glued and glueless, the dielectric constant of glued is 3.5, and the dielectric constant of no glue is 3.3.

2. Polyester

Polyester is made of polyethylene terephthalate (PET for short, polyethylene terephthalate). The thickness range of its application to flexible boards is generally 25μm (1mil) 125μm (5mil). It has the same excellent softness and electrical properties as Polyimide.

Imidlertid er dens dimensionsstabilitet under fremstillingsprocessen lidt dårligere end polyimid. Derudover har den dårlig rivemodstand og er mere følsom over for svejsetemperatur. Dens dielektriske konstant er 3,4.

Ovenstående er den dielektriske konstant for det fleksible fpc-kort kompileret af redaktøren, jeg håber, det vil være nyttigt for dig