Under the trend of miniaturization, high performance and high frequency of electronic devices, PCB gold fingers, as core conductive connection components, need to withstand the test of high-temperature processes such as reflow soldering and wave soldering frequently, while resisting friction, static electricity and chemical corrosion during transportation and use, putting forward extremely high requirements for the comprehensive performance of protective materials. LVZHIMEI gold finger tape uses imported high-performance polyimide film as the base material, combined with independently developed silicone pressure-sensitive adhesive formula, and is processed through multiple precision processes to achieve stable high-temperature resistance of 300℃ for a short time (within 10 seconds) and 250℃ for a long time, far exceeding industry conventional standards. Moreover, there is no residual adhesive after peeling, effectively avoiding short circuits or poor contact of PCB boards caused by residual adhesive pollution.
When selecting products, it is necessary to accurately match scenario requirements around four core indicators: first, the temperature resistance level. The temperature curves of different electronic manufacturing scenarios vary significantly. Due to complex working conditions in the automotive electronics field, products need to pass -40℃ to 150℃, 1000 temperature cycle tests without cracking or degumming; PCB boards for consumer electronics (such as mobile phones and computers) need to pass -40℃ to 85℃, 500 cycle tests to adapt to temperature fluctuations in daily use; the peak temperature of reflow soldering in SMT processes can reach 280℃, so products with short-term temperature resistance ≥300℃ should be selected. Second, the viscosity level. LVZHIMEI provides three viscosity specifications: low, medium and high. The low-static version (surface resistance ≥10¹²Ω) is suitable for precision electronic components such as chips and sensors to avoid electrostatic damage; the medium-viscosity version is suitable for conventional PCB gold finger protection; the high-viscosity version is used for rough substrates or long-term fixing scenarios.
Environmental certification is a core consideration for export enterprises. LVZHIMEI gold finger tape has fully passed international certifications such as RoHS, REACH and UL94 V-0 flame retardancy, is halogen-free and heavy metal-free, and fully complies with environmental regulations in European and American markets. In addition, the base material thickness (25μm, 50μm, 75μm) should be selected according to protection needs. The 25μm thin version is suitable for precision narrow spaces, while the 75μm thick version has stronger tensile strength and wear resistance, and can be used in high-friction scenarios. LVZHIMEI also supports customized width (1mm-1000mm), length and die-cutting services, accurately matching the gold finger size of different types of PCB boards, and provides free sample testing services to help enterprises verify product adaptability in advance and avoid selection risks.
