Low-Temperature SnBiAg Solder Paste

FSA-574D series low-temperature lead-free epoxy solder paste is composed of low-temperature ultra-fine SnBi solder powder and halogen-free flux. Only a tiny amount of solvent evaporates during the soldering and solidification process. There is no solder ball formation after soldering. The solder powder melts and shrinks, and the solder joints are metallurgical connections, which are equivalent to the soldering effects of solder paste. FSA-574D epoxy solder paste is unnecessary to clean. Solder residue becomes thermosetting adhesive to reinforce the solder joints and enhance the anti-corrosion and insulation performance. FSA-574D is suitable for the reliable packaging of thin substrates and non-heat-resistant components.

Recovery method: Don't open the bottle cap until the solder is close to room temperature. No more than two times of temperature return.

Recovery time: Generally, paste should be removed from refrigeration 2~3 hours before use. Actual time to reach thermal equilibrium will vary with container size.Note: Do not open the bottle cap without sufficient "recovery" or shorten the recovery time by heating the paste.
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.

Stencil Cleaning Solvent: Ether. Propylene glycol monomethyl ether (PM) is preferred.

FSA-574P series low-temperature lead-free epoxy solder paste products are made of low-temperature ultra-fine SnBi solder powder and halogen-free flux. Only a tiny amount of solvent evaporates during the soldering and curing process. There is no solder ball generation after soldering. The solder powder melts and shrinks, and the solder joints are metallurgical connections, which are equivalent to the soldering effect of solder paste. FSA-574P epoxy solder paste is unnecessary to clean. The solder residue becomes thermoset adhesive to reinforce the solder joints and enhance the anti-corrosion and insulation performance. FSA-574P is suitable for the reliable packaging of thin substrates and non-heat-resistance components components.

Recovery method:Don't open the bottle cap until the solder is close to room temperature. No more than two times of temperature return.

Recovery time: Generally, paste should be removed from refrigeration 2~3 hours before use. Actual time to reach thermal equilibrium will vary with container size.

Note: Do not open the bottle cap without sufficient "recovery" or shorten the recovery time by heating the paste

Operation Environment: The best operating temperature and humidity are 20-25°C and 40-50%RH, respectively. Reflow soldering in a nitrogen atmosphere is recommended.

Stencil Cleaning Solvent: Ether. Propylene glycol monomethyl ether (PM) is preferred.

Fitech’s tin-bismuth-silver solder powder with excellent sphericity, uniform particle size, and low oxygen content is mixed with excellent halogen-free flux to prepare FTD-574 series low-temperature solder paste. Solvent volatilizes very slightly during soldering. There is no solder ball formation during soldering, and only a small amount of residue is produced after soldering. Moreover, FTD-574 has outstanding wettability. The solder joints generated are plump and bright. The product is effective for low-temperature component mounting. 

1、Storage and Recovery Instruction: Solder paste is normally stored in a refrigerator with -5~10℃. When solder paste is taken out of the cold box,its temperature is much lower than room temperature. If use without the recovery process varies damage may be caused to the paste. Opening the cap of sealing may cause water vapor in the air to condense on the paste. If this occurs, later in the reflow furnace (temperature over 150 ℃ ), water would vaporize due to strong heat.This may lead to solder explosion and damage the chip.

2、Recovery method: Don't open the bottle cap until the solder is close to room temperature. No more than two times of temperature return.

3、Recovery time: Generally, paste should be removed from refrigeration 2~3 hours before use. Actual time to reach thermal equilibrium will vary with container size.

4. Note: Do not open the bottle cap without sufficient "recovery" or shorten the recovery time by heating the paste

5. Operating Environment:The best operating temperature and humidity are 20-25°C and 40-50%RH, respectively. Reflow soldering in a nitrogen atmosphere is recommended.

6. Operating Time

① Continuous printing time: When adding solder paste continuously: 8 hours; In case of discontinuous addition of solder paste: 4 hours; ② Please add solder paste before the solder paste on the board is almost one third (rolling diameter: 10mm or less); ③ Please keep the solder paste on the plate within 3 hours; ④ If printing is interrupted for more than 30 minutes, please clean the stencil. ⑤ Dwell time after printing: After the solder paste is printed, the components should be mounted as soon as possible and the soldering should be completed when passing the oven to avoid drying out the surface of the solder paste due to long storage, which will affect the component mounting and soldering effects. Generally, the recommended dwell time of solder paste is no more than 4 hours, while the low temperature bismuth-containing solder paste does not exceed 2 hours. If the printing is interrupted for more than 30 minutes or is temporarily interrupted, the printing template needs to be cleaned. It can continue to work after 1-2 trial printing. The solder paste attached to narrow space of the opening (≤0.4mm) and the opening of the stencil will gradually dry, which will degenerate the adhesive ability.

Fitech's tin-bismuth-silver alloy solder powder with excellent sphericity, uniform particle size, and low oxygen content is mixed with excellent halogen-free flux to prepare FTP-574 series low-temperature solder paste. Solvent volatilizes very slightly during soldering. There is no solder ball formation and only a small amount of residue forms after soldering. Moreover, the product has outstanding wettability, and the solder joints generated are plump and bright. It is effective for low-temperature component mounting. 

1、Storage and Recovery Instruction: Solder paste is normally stored in a refrigerator with -5~10℃. When solder paste is taken out of the cold box,its temperature is much lower than room temperature. If use without the recovery process varies damage may be caused to the paste. Opening the cap of sealing may cause water vapor in the air to condense on the paste. If this occurs, later in the reflow furnace (temperature over 150 ℃ ), water would vaporize due to strong heat.This may lead to solder explosion and damage the chip.

2、Recovery method: Don't open the bottle cap until the solder is close to room temperature. No more than two times of temperature return.

3、Recovery time: Generally, paste should be removed from refrigeration 2~3 hours before use. Actual time to reach thermal equilibrium will vary with container size.

4. Note: Do not open the bottle cap without sufficient "recovery" or shorten the recovery time by heating the paste.

5. Operating Environment:The best operating temperature and humidity are 20-25°C and 40-50%RH, respectively. Reflow soldering in a nitrogen atmosphere is recommended.

6. Operating Time

① Continuous printing time: When adding solder paste continuously: 8 hours; In case of discontinuous addition of solder paste: 4 hours; ② Please add solder paste before the solder paste on the board is almost one third (rolling diameter: 10mm or less); ③ Please keep the solder paste on the plate within 3 hours; ④ If printing is interrupted for more than 30 minutes, please clean the stencil. ⑤ Dwell time after printing: After the solder paste is printed, the components should be mounted as soon as possible and the soldering should be completed when passing the oven to avoid drying out the surface of the solder paste due to long storage, which will affect the component mounting and soldering effects. Generally, the recommended dwell time of solder paste is no more than 4 hours, while the low temperature bismuth-containing solder paste does not exceed 2 hours. If the printing is interrupted for more than 30 minutes or is temporarily interrupted, the printing template needs to be cleaned. It can continue to work after 1-2 trial printing. The solder paste attached to narrow space of the opening (≤0.4mm) and the opening of the stencil will gradually dry, which will degenerate the adhesive ability.