Laser welding solder paste
Impulse welding special solder paste
Shenzhen huamao cheung electronic major research and development production of solder paste, for quick welding, laser and soldering iron and wuxi after welding bead and few residues, bottom WenXi creams melting point is 138, medium temperature, melting point 180, 217, high temperature melting point, particle has a 25-45 um, 20 and 38 um, 15 to 25 um, 10-20 um. Scope of application: camera module, VCM, CCM, antenna, recording heads for hard drives, optical communication components, temperature sensor, light sensor welding products: traditional way is difficult to assemble the improvement of precision, assembling and welding efficiency, at present the welding equipment with laser and HOTBAR welding machine, laser welding time is 0.3 to 0.6 seconds, HOTBAR soldering time is 5 to 10 s clock, temperature is 160-300 degrees, fast welding temperature is high, the ordinary solder paste it contains about 11% of the flux composition, the solvent such as volatile matter, about 5%, fast welding solvent such as volatiles will produce splash, splash in the thrum welding position leaving lots of beads and residue, if subsequent not clean, easy to cause a short-circuit. Fast welding process without solvent volatilization, tin beads no residual after welding, can completely eliminate the work of removing tin beads. This product for halogen free formula, few organic residue, and are transparent, surface impedance is high, high reliability. Application process is a little glue, printing and a variety of ways such as scraping gum.
