SZFitech

  Anisotropic conductive adhesives (ACA) and isotropic conductive adhesives (ICA) exhibit significant differences in terms of conductive direction, conductive particle concentration, application scenarios, preparation processes, and storage conditions. The specific analysis is as follows: 1. Conductive Direction Anisotropic Conductive Adhesive (ACA): Conducts electricity only in the vertical direction (Z-axis) while insulating horizontally. Suitable for high-precision interconnections between chips and substrates, flexible printed circuit (FPC) connections, and similar applications. Fitech's Contribution: Significantly enhances vertical conductivity efficiency through micro/nano-scale surface modification of conductive particles, while reducing horizontal leakage risks. Its ACA materials have been successfully applied in foldable smartphone hinge modules, resolving conductive failure caused by repeated bending and advancing the commercialization of flexible ...

  I. Core Advantages of High-Temperature Solder Paste High Solder Joint Strength and Thermal Fatigue Resistance High-temperature solder pastes (e.g., SAC305, SAC387) significantly enhance mechanical strength and creep resistance of solder joints in high-temperature environments by optimizing alloy composition—such as increasing silver content or adding elements like Bi, Sb, and Ni. These joints resist fatigue cracking caused by coefficient of thermal expansion (CTE) mismatch during thermal cycling, making them ideal for automotive electronics, industrial controls, and other applications requiring prolonged exposure to high-temperature vibrations. Suppressing Excessive Intermetallic Compound (IMC) Growth High-temperature processes precisely control peak reflow temperatures and time above liquidus (TAL) to inhibit excessive IMC growth between solder and pad plating (e.g., Cu, Ni). Excessively thick IMC layers form brittle structures that compromise joint reliabi...

  In the micro-scale world of Mini LED technology, solder paste emerges as the critical material for overcoming miniaturization challenges through four core advantages: high-precision printing, ultra-fine particle filling, high thermal conductivity alloy formulations, and environmentally adaptive design. Among these, Fitech's Mini LED solder paste stands out for its unique technical characteristics, delivering exceptional performance enhancements and process compatibility. The following provides a detailed analysis: I. High-Precision Printing: Micron-Level Filling "Engravers" Mini LED chips can measure as small as 50μm × 100μm, with pad spacing as narrow as 5-50μm, demanding extreme precision in solder paste printing. Through technological innovation, Fitech enables its ultra-fine solder paste to excel in this field: Ultra-Fine Particle Adaptation for Printing: Fitech's FTP-0176 and FTP-3057 series high-precision solder pastes utilize ultra-fine s...

  1. Physical Form and Composition Differences Liquid Flux Transparent or translucent liquid primarily composed of rosin, activators (such as organic acids or halides), solvents (e.g., alcohol, acetone), and antioxidants. Characteristics: High fluidity, volatile nature; requires sealed storage to prevent solvent evaporation and performance degradation. Paste Flux A paste containing resin (providing tackiness), activators (removing oxides), solvents, and thixotropic agents (regulating flow). Fitech's eco-friendly resin series utilizes high-purity resins and low-halogen activators, resulting in minimal residue and excellent insulation properties, making it ideal for precision electronic soldering applications. 2. Application Scenarios and Process Compatibility Liquid Flux Suitable for: Wave soldering, manual soldering, flame brazing (e.g., copper and copper alloys, stainless steel welding). Typical Applications: Manual rework of electronic components, pre...