R·G-302 Dye-Free Bright Acid Copper Process
Performance & Features
- The core advantage of R·G-302 dye-free bright acid copper process is that it eliminates salting-out and decomposition of dye-based additives in the bath, effectively avoiding tiny pinholes and yielding ultra-clear bright copper coatings.
- Mirror-bright copper layers can be obtained across wide ranges of current density and temperature.
- The additive boasts high stability, low consumption and long bath maintenance cycles.
Operating Parameters
| Item |
Concentration Range |
| Copper Sulfate |
180–220 g/L |
| Sulfuric Acid |
50–80 g/L |
| Chloride Ion |
60–80 mg/L |
| R·G-302A |
0.4–0.6 mL/L |
| R·G-302B |
0–0.1 mL/L |
| R·G-302C |
4–6 mL/L |
| Operating Temperature |
25 ℃ (20–35 ℃) |
| Cathode Current Density |
1–6 A/dm² |
| Anode Current Density |
1–3 A/dm² |
| Agitation |
Air agitation |
| Filtration |
Continuous filtration without activated carbon |
| Anode Material |
Phosphor copper |