Solder / Flux/Flux


HAKKO PASTE (FS-120)イメージ

Available in:

  • Japan
  • Flux for sheet metal compatible with lead-free solders
  • The flux offers excellent solder "spreadability" and "wettability"
Contact Us
Manuals / MSDS / Engineering documents
  • Features
  • Packaging List / Specifications
  • Soldering Tip / Nozzle
  • Replacement Parts / Option
  • Maintenance


Flux for sheet metal working compatible with lead-free solder

Excellent solder spreadability and wettability

  • Compared to HAKKO FS-110, offers excellent performance with lead-free solders that
    typically have poor solderability.
Also perfect for use with stained glass, accessories, and other applications where lead-free solder is becoming more and more common.

Capillary action test

  • Excellent capillary action provides improved soldering performance.
Capillary action test
Test Conditions
Solder: Sn-3.0Ag-0.5Cu
Temperature: 260°C
Time: 10 s
Test metal: Sn plated Fe sheet (tin)
30 × 40 × 0.5 mm
Pre-processing: Degreasing with EtOH only

Compatibility Table

Compatibility Table
Do not use for soldering electric/electronic products
  • *Zinc chlorine is used for this product to remove the oxide film on the surface of metal sheets.
     Using it for electricity and electronic parts, it will lead corrosion. Please never use.

Safety Data Sheet

Safety data sheet is available for HAKKO FS-120.
Sheets can be requested either through the HAKKO Document Portal or by submitting an inquiry form.

You can browse and download "Instruction Manuals" and "SDS" freely.
Even "Engineering Documents"are available once you complete user registration.