Fitech produced lead-free solder paste under the idea of "lead-free electronics" which refers to the solder paste that the total concentration of toxic and harmful substances including mercury (Hg), cadmium (Cd), hexavalent chromium (Cr), lead (Pb), polybrominated biphenyl (PBB), polybrominated diphenyl ether (PBDE)) should not exceed 1000ppm. Lead-free solder paste should have outstanding wettability, solderability, electrical conductivity, and thermal conductivity. Moreover, it should have extraordinary reliability, compatibility, and economic benefit.
Lead-free solder pastes developed for different scenarios include the SAC305 series, tin-bismuth-silver series, lead-free silver-free series, high-temperature lead-free series, low-temperature high-reliability series, and gold-tin solder paste. All products have been widely used in microelectronics and semiconductor packaging.
An80Sn20 solder powder with excellent sphericity, uniform particle size, and low oxygen content is combined with halogen-free flux to produce FH-280 series solder paste. FH-280 has a superior adhesion effect before soldering. Solvent volatilizes very slightly during soldering. In addition, the solder paste has outstanding wettability, anti-slump, and residue reduction properties. There is no solder ball formation during soldering. Moreover, FH-280 has high tensile strength, excellent corrosion resistance, high melting point, and extraordinary thermal creep performance. FH-280 is compatible with other precious metals and has excellent electrical and thermal conductivity. The product is suitable for the high-reliability packaging of semiconductors and microelectronic devices. It is applied to the high thermal conductivity packaging of high-power devices.
After Curing:
Warming Method: The sealed solder paste should rewarm to room temperature naturally; Rewarm no more than twice.
Warming Time: Rewarm 2 to 3 hours at room temperature. The actual time required to reach thermal equilibrium varies by vessel size.
Note: Do not open the bottle cap without sufficient rewarming or shorten the rewarming time by using heating equipment.
Operating Environment: The best operating temperature and humidity are 20-25°C and 40-60%RH, respectively. Reflow soldering in a nitrogen atmosphere is recommended.
Our engineers will be happy to answer your questions or help you choose the right solder product
