CLEAPSS DT - Supporting practical work in science, technology and art

About this resource.. Click to download Document.
To produce, by etching away unwanted copper, an electronic circuit board designed to meet a specific requirement.The prepared board is immersed in ferric chloride [iron(III) chloride] solution or sodium peroxodisulfate (persulfate) solution to etch away the copper. The board is sometimes cleaned with a solvent before or after soldering, formerly mainly 1,1,1-trichloroethane, now propan-2-ol (isopropanol) or other alcohols (eg, ethanol).
Click here to view.
Related searches: