Application of Electronic-grade Potassium Organic Acid for Anti-corrosion of Electronic Components

Electronic components (resistors, capacitors, chips, connectors, PCBs, etc.) are susceptible to moisture, acidic/alkaline environments, and salt spray corrosion during production, storage, and use. These factors may cause pin oxidation, contact corrosion, PCB leakage, and performance degradation, severely compromising product reliability and lifespan. Conventional anti-corrosion materials suffer from high impurity levels, poor compatibility, short protection duration, and susceptibility to component precision damage, requiring compliance with SEMI and ISO electronic-grade standards. The following two electronic-grade potassium organic acid products serve as core auxiliary materials for component anti-corrosion in electronics manufacturing, compatible with the entire production process of precision electronic components. Details are as follows:

1. Electronic-grade potassium acetate (main content ≥99.5%, compliant with SEMI standards, metal ions ≤1ppb)

Core Function: This specialized corrosion inhibitor and cleaning aid for electronic components is designed for anti-corrosion treatment of component leads and PCB surfaces. It forms a dense passive protective film that inhibits metal oxidation, salt spray corrosion, and moisture erosion. Additionally, it serves as a pH regulator in cleaning solutions to stabilize the system's acidity/alkalinity, preventing surface oxidation damage during cleaning. The product is compatible with precision connectors, chip leads, and PCBs for integrated anti-corrosion and cleaning applications, thereby extending component storage duration and service life.

Product Advantages: Features ultra-high electronic-grade purity with no heavy metals, particulates, or harmful impurities, ensuring component safety and electrical performance. The long-lasting anti-corrosion effect is achieved through a dense, uniform passivation film that withstands over 72 hours of salt spray testing. Excellent water solubility prevents sedimentation, making it suitable for cleaning, soaking, and spraying processes. Compatible with electronic components (copper, tin, aluminum, PCB substrates) without corrosion or residue. Complies with global electronic manufacturing standards, ideal for high-precision component production.

Usage instructions: For anti-corrosion passivation treatment: Prepare a 5%-10% solution, immerse components for 5-10 minutes, rinse with deionized water after removal, and dry at 80°C. For cleaning solution: Add 0.8%-1.5% of the cleaning solution by weight, adjust pH to 7.0-8.5, and use for surface cleaning and anti-corrosion of components. The entire process must be performed in a cleanroom to avoid contamination by impurities.

Common Issues: Highly hygroscopic, it must be stored in a sealed container under clean conditions with a temperature of 10-25°C and relative humidity ≤40%. Direct mixing with strong acidic reagents is prohibited to avoid compromising the preservative effect and purity. Excessive use may lead to an overly thick passivation film, potentially affecting the conductivity of component contacts. Precise dosage control is required.

2. Electronic-grade potassium formate (main content ≥99.0%, meeting electronic-grade standards, free from harmful impurities)

Core Function: A specialized anti-corrosion enhancer for high-end precision components, primarily used in the anti-corrosion treatment of chips, micro-connectors, and flexible PCB boards. It enhances the density and adhesion of passivation films, improving the components' resistance to moisture, salt spray, and acid/alkali. Additionally, it serves as an auxiliary material for anti-corrosion coatings, improving the adhesion between the coating and the component surface to prevent coating detachment. This makes it suitable for long-term anti-corrosion of components in high-end electronic devices (consumer electronics, industrial control, automotive electronics).

Product Advantages:  -Electronic-grade high purity with ultra-low impurity content, ensuring no impact on electrical performance or precision of components.  -Exceptional corrosion resistance and efficiency enhancement, extending salt spray resistance to over 96 hours and significantly prolonging service life.  -Heat-resistant and highly stable, compatible with post-soldering anti-corrosion treatments without decomposition or harmful emissions.  -Excellent water solubility for easy dispersion in anti-corrosion coatings and passivation solutions, ensuring excellent compatibility.  -Environmentally friendly with zero residue, meeting green production standards in electronics manufacturing.

Application Method: Passivation Solution: Add 0.5%-1.2% by mass of the passivation solution, stir thoroughly, then use for component immersion or spray passivation. Coating Auxiliary: Add 1.0%-2.0% by mass of the anti-corrosion coating, mix uniformly with coating materials, then use for component surface coating preparation. For precision components, ensure uniform solution concentration to avoid localized high concentration.

Common Issues: Highly hygroscopic, requires sealed and light-proof storage. Use promptly after opening to prevent moisture absorption and clumping, which may affect dosing accuracy. Do not store with strong oxidizers to avoid chemical reactions. Not suitable for direct surface corrosion protection of high-voltage components; must be used in conjunction with specialized anti-corrosion coatings.

3.Industry Use Cases

A leading electronics manufacturer specializing in consumer electronics components (chips, connectors, PCBs) previously faced challenges with conventional anti-corrosion solutions, including excessive impurities, short preservation duration, high component oxidation rates (8.3%), and export barriers to Europe and America. By implementing a dual-use system combining electronic-grade potassium acetate (for cleaning and basic passivation) with potassium formate (for enhanced corrosion resistance), the company achieved a 0.4% reduction in component oxidation rates, extended salt spray resistance from 48 to 96 hours, and improved product pass rates from 92.5% to 99.3%. These improvements enabled the company to pass international electronic component certifications, with export orders surging by 58%. The upgraded solutions have been widely adopted in global consumer electronics and automotive electronics sectors, earning high recognition from overseas clients.