Protect electronic components gold-plated from corrosive gases! Water-soluble gold discoloration preventer AU-20.
The water-soluble gold discoloration preventive agent AU-20 is a water-soluble discoloration preventive agent developed to protect various gold-plated electronic components from corrosive gases. As electronic components become smaller and more densely integrated, there is an increasing demand for enhanced reliability in performance. In particular, gold plating is applied to contact areas where reliability is critical. Gold is chemically stable, has low electrical resistance, and exhibits excellent corrosion resistance in corrosive environments; however, to consider economic factors, gold plating is currently applied in thin layers. As a result, pinholes can easily form, allowing corrosive gases to penetrate, leading to corrosion and performance degradation. **Features** - Excellent corrosion resistance with minimal increase in contact resistance → Passes environmental tests such as heat resistance, salt spray resistance, resistance to sulfur dioxide gas, and resistance to hydrogen sulfide gas, with a minimal increase in contact resistance after testing. → In particular, AU-20 reacts not only with copper alloys but also with nickel surfaces, providing protection from corrosive environments. - Does not affect solderability - Provides adequate lubricity For more details, please download the catalog or contact us.
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basic information
【Properties】 ○Appearance: Colorless to pale yellow transparent liquid ○Specific gravity (25°C): 1.00±0.05 ○pH (concentrate): 8.0 ±0.5 ○Solubility: Dissolves transparently in water 【Usage】 ○Usage concentration: Dilute this product to 200cc/L (5 times with pure water) and immerse at a temperature of 30–50°C for 30 seconds to 2 minutes. ○Usage examples: Process A AU-20 → Drying (especially when lubrication is needed) Process B AU-20 → Rinsing → Drying ○Packaging: 18kg oil can ●For more details, please download the catalog or contact us.
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Asahi Co., Ltd. has been in operation since 1958, and we have always listened to our customers' requests and focused on researching and developing products that meet their needs. So far, we have released numerous products, including cleaning agents for kitchens, car shampoos and waxes for car wash machines, as well as copper and silver tarnish prevention agents. In recent years, there has been a growing demand for environmentally friendly chemicals, leading to an increase in requests for degreasers, cleaning agents, tarnish prevention agents for semiconductors, and high heat-resistant tarnish prevention agents that do not use strong acids or strong alkalis. Our products have traditionally been developed in response to such voices. Moving forward, we will continue to listen to various feedback and develop new products.