TECHNOLOGIES: Etching of Tin metal resist ÒÎË 800
ÒÎË 800 process is Tin stripping from a copper conductive pattern before depositing a protective mask.
ÒÎË 800: The basic process stages and materials used
¹ |
Operation |
Òåmperature, ºÑ |
Processing time,
min. |
Note |
1 |
Etching of Òin
(ÒÎË 801) |
40 - 45 |
1-3 |
Stripper is free from hydrogen peroxide which is prone to spontaneous decomposition even with available stabilizers. In the course of operation it is regenerating and can serve during an indefinitely long time.
During stripping process the copper surface remains practically untouched. |
2 |
Brightening
(ÒÎË 802) |
18 - 25 |
1-2 |
Brightener improves the surface of conductors giving both the uniform microroughness and the light pink color to copper.
The speed of Tin stripping remains invariable during the whole operation period just providing a highly stable quality of the conductive pattern surface prior to mask deposition. |
