PURE GOLD ELECTROLYTE
AURUNA® 5100 is a neutral fine gold electrolyte for depositing matt, lemon-yellow coatings. It's specifically developed for applications requiring excellent bonding and soldering properties. In addition to good ductility, the layers from AURUNA® 5100 also exhibit a low hardness and a low contact resistance. Even under production conditions, the layers have a high gold purity of 99.99 wt. % Au.
The coatings meet the requirements of ASTM B488-01, Type III, Code A/B.
Advantages
• Neutral electrolyte for pure gold coatings with very good thickness distribution
• High current efficiency
• Resist-friendly operating conditions
• Excellent bonding and soldering properties
• Low contact resistance
• Classification according to ASTM B488-01 Type III, Code A/B
• Compatible with standard BGA requirements
• Easy maintenance and high stability of the electrolyte
Applications
• Rigid and flexible printed circuit boards
• Semiconductors
• BGA applications
• Ceramic and metallic substrates
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Electrolyte type |
Neutral |
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Coating |
Fine gold |
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Metal content |
5 (4 - 8) g/l Au |
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Purity |
99.9 wt. % Au |
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pH value |
6.0 (5.8 - 6.2) |
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Colour of deposit |
Lemon-yellow |
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Operating temperature |
65 (60 - 70) °C |
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Brightness |
Matt |
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Current density range |
0.2 (0.1 - 0.5) A/dm² |
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Hardness of deposit |
85 HV |
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Plating speed |
Approx. 0.13 μm/min |
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Density of the coating |
Approx. 19 g/cm³ |
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Deposition rate |
Approx. |
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Anode material |
Pt-Ti (type PLATINODE Pt/Ti) |
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