FF-7702 Bright Acid Tin Plating Process
FF-7702 bright tin plating process does not contain formaldehyde, is a low foaming sulphate tin plating process, can produce a bright silver-white ductile tin plating layer, suitable for barrel and rack plating process.
1. Features and application
Add special effect antioxidants to effectively extend the service life of the bath;
Formaldehyde-free, low-foam tin plating process;
Good solderability and uniform plating for electronic plating;
The coating performance is stable;
Does not corrode insulators such as ceramics and lead glass.
2. Operating conditions
Item | Range | Optimal |
Stannous sulfate | 20~40g/L | 30 |
Sulfuric acid (H2SO4) | 150~170g/L | 160 |
FF-7702A | 20~40ml/L | 30 |
FF-7702B | 0.5~3ml/L | 2 |
Temp | 5~20℃ | 15~20℃ |
Cathode current density(rack plating) | 1.0~3.0 A/dm2 | 2.0A/dm2 |
Cathode current density(barrel plating) | 0.3~1.0 A/dm² | 0.5 A/dm² |
Anode current density | 0.5~2.0 A/dm² | 1.0 A/dm² |
Stirring (cathode rocking) | 3~4m/min | 3~4m/min |
Filter | Continuous | Continuous |
Plating speed | 1µm/min (2 A/dm²) |