Key Technical Specifications
- Formulation: Halogen-free, lead-free, and environmentally safe, complying with RoHS Directive 2011/65/EU.
- Appearance: Milky white paste that transitions smoothly under heat.
- Packaging: Standard 10cc syringe/tube container. (Note: Packages labeled as RL-422S-IM often include a dedicated metal push rod and dispenser needles for easier application).
Performance Characteristics
- Strong Chemical Activity: Rapidly removes metal oxidation to ensure fast and efficient tinning.
- Optimal Viscosity & Fluidity: Offers balanced thickness to prevent micro-components from moving while allowing the molten solder to flow smoothly into place.
- High Insulation Resistance: Designed specifically not to cause electrical shorts on delicate smartphone or computer motherboards after heating.
- Low Residue: Leaves virtually no residue after application, minimizing the risk of long-term corrosion and shortening post-solder cleaning times.
Primary Applications
- Smartphone Repairs: Highly recommended for delicate iPhone and Android logic board repairs, including CPU swap operations.
- BGA Reballing & SMD Soldering: Helps securely bond chip grids, surface-mount components, and fine-pitch IC chips.
- General PCB Rework: Ideal for fix-it shops handling precise circuit modifications.
How to Use Effectively
- Apply a small bead or film of the flux paste directly onto the PCB pads or chip contacts.
- Use a hot air rework station or a soldering iron to apply localized heat.
- Watch the milky paste turn clear and activate, instantly smoothing out the solder joints.
- Though it is low-residue, a quick wipe with Isopropyl Alcohol (IPA) is always a good practice for absolute cleanliness.
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