Editorial Team - PCB Directory
Apr 24, 2020
Etching is a part of the PCB fabrication process which is used to create the cropper traces on the printed circuit board. This is done by removing the excess copper from the copper laminate, only leaving the required circuit on it.
There are two types of Etching: Dry Etching and Wet Etching:
Wet Etching: Wet Etching uses an acid solution and dissolves the unwanted copper based on chemical reactions. The unwanted copper is dissolved when dipped into a chemical solution. Successful realization of Wet Etching depends upon the selection of an appropriate chemical solution and etch material.
There are two types of chemicals that can be used for Wet Etching:
Dry Etching: This is also know as Plasma etching, where a plasma activates chemical reactions between base and surface atoms of the laminate causing the unwanted copper to dissolve.
The point at which all unwanted copper gets dissolved during etching is called ‘Breakpoint’.
Create an account on PCB Directory to get a range of benefits.
Login to PCB Directory to download datasheets, white papers and more content.
Note:- You need to sign in/sign up to submit a request quote.
Note:- You need to sign in/sign up to submit a review.
Our Newsletters keep you up to date with the PCB Industry
Our Newsletters keep up to date with the PCB Update