FF-7702 Bright Acid Tin Plating Process - Formaldehyde-Free Fast Deposition Stable Process Electronic Plating Chemical
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Highlight
Formaldehyde-Free Tin Plating Chemical
,Fast Deposition Bright Acid Tin Plating Process
,Stable Process Electronic Plating Chemical
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TypeBright Acid Tin
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UseTin Plating
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ItemChemical Auxiliary Agent
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FeatureFast Deposition, Stable Process
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Place of OriginCHINA
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Brand NameFENGFAN
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Model NumberFF-7702
FF-7702 Bright Acid Tin Plating Process - Formaldehyde-Free Fast Deposition Stable Process Electronic Plating Chemical
FF-7702 Bright Acid Tin Plating Process
The FF-7702 bright tin plating process is a formaldehyde-free, low-foaming sulfate tin plating solution that produces a bright silver-white ductile tin plating layer. This process is suitable for both barrel and rack plating applications.
Features and Applications
- Special effect antioxidants extend bath service life
- Formaldehyde-free, low-foam tin plating process
- Excellent solderability and uniform plating for electronic applications
- Stable coating performance
- Non-corrosive to insulators including ceramics and lead glass
Operating Conditions
| Item | Range | Optimal |
|---|---|---|
| Stannous sulfate | 20-40 g/L | 30 g/L |
| Sulfuric acid (H₂SO₄) | 150-170 g/L | 160 g/L |
| FF-7702A | 20-40 ml/L | 30 ml/L |
| FF-7702B | 0.5-3 ml/L | 2 ml/L |
| Temperature | 5-20°C | 15-20°C |
| Cathode current density (rack plating) | 1.0-3.0 A/dm² | 2.0 A/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) | 3-4 m/min | 3-4 m/min |
| Filter | Continuous | Continuous |
| Plating speed | - | 1 µm/min (2 A/dm²) |
Solution Preparation
- Clean the plating tank, filter pump, anode and anode bags with 10% (v/v) sulfuric acid, then wash thoroughly with water
- Add 50% of the required volume of deionized or distilled water to the tank, then add the required amount of sulfuric acid while stirring (take appropriate protective measures when adding sulfuric acid)
- Place several tin bars in the solution, add the required amount of stannous sulfate while stirring, and heat the solution to no more than 50°C until completely dissolved
- Add deionized or distilled water to reach the final volume
- After the plating solution cools to room temperature, add FF-7702A and B while stirring
- For optimal performance, perform a small current electrolysis of 2-3 Ah/L
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