GOLD COBALT ELECTROLYTE (+ AURUNA® INHIBITOR 2)
AURUNA® 8100 is used for depositing hard gold coatings in special high-speed equipment. The weakly acidic high-speed electrolyte has a wide operating range with easy bath maintenance and extremely high plating speed. AURUNA® 8100 was specifically developed for the automatic high-speed gold-plating in equipment for selective plating and continuously working reel-to-reel lines. Due to vigorous electrolyte agitation (flow, spray), it allows the working at high current densities with stable long-time behaviour. It can be also operated as a gold strike electrolyte. The deposits are solderable, low in pores, ultra-bright, hard and abrasion-resistant. They have a constantly low contact resistance. Therefore the electrolyte is excellently suitable for the gold-plating of electronic components such as connectors, contacts and edge connectors on printed circuit boards.The optional use of the AURUNA® Inhibitor 2 offers the possibility of a reduced gold consumption of up to 15%. The inhibitor allows sharp borderlines - this reduces the size of the run-off area. Of course, the layer properties remain unaffected. The inhibitor can be removed without any residue after the plating by cleaning with activated carbon.
Advantages
• Weakly acidic high-speed electrolyte
• Wide operating range
• Extremely high plating speed
• Low-pore, solderable, hard and abrasion-resistant coatings
• For electrical contacts
• Classification according to ASTM B-488-01 Type I-II, Code C-D
• The coatings are RoHS compliant
• For use in high-speed equipment
• Gold savings of up to 15% by inhibitor usage
Applications
• Connectors
• Electrical contacts
• Edge connectors on printed circuit boards
ELECTROLYTE CHARACTERISTICS |
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COATING CHARACTERISTICS |
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Electrolyte type |
Weakly acidic |
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Coating |
Gold-cobalt |
Metal content |
12 (2 - 30) g/l Au |
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Alloy composition |
Approx. |
pH value |
4.2 - 4.6 |
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Colour of deposit |
Deep yellow |
Operating temperature |
55 (45 - 65) °C |
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Brightness |
Ultra-bright |
Current density range |
2 - 80 A/dm² |
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Hardness of deposit |
120 - 200 HV |
Plating speed |
0.3 - 11 μm/min |
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Max. coating thickness |
10 μm |
Anode material |
Pt-Ti (type PLATINODE Pt/Ti) |
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Density of the coating |
Approx. 17 g/cm³ |
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