Alkali etchant for PWB
A-Process
Chemicals
PCB
Etching
Copper
A-Process
◆Features
1. Available to use several kind of metal resist made from solder, tin, nickel and gold.
2. Excellent etch factor and fast etching rate.
3. Etching quality is very stable by continuous replenishment.
Available resist
Tin, Solder, Nickel, Gold, Dry film resist (Alkali resistance), Solder resist, etc.
1. Available to use several kind of metal resist made from solder, tin, nickel and gold.
2. Excellent etch factor and fast etching rate.
3. Etching quality is very stable by continuous replenishment.
Available resist
Tin, Solder, Nickel, Gold, Dry film resist (Alkali resistance), Solder resist, etc.
Cross section of circuit using alkali etching
Alkaline etching is performed by the A-process after metal resist such as tin plating is formed on the copper circuit. The top of the circuit is protected and a circuit can be formed with a good etch factor. The metal resist is removed with a tin remover such as Melstrip TL-3470.
Cross section of circuit using alkali etching
Alkaline etching is performed by the A-process after metal resist such as tin plating is formed on the copper circuit. The top of the circuit is protected and a circuit can be formed with a good etch factor. The metal resist is removed with a tin remover such as Melstrip TL-3470.