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MG Chemicals Sn100e Water Soluble Solder Wire is an electronic grade solder wire. It uses a high-purity, eutectic 99.5% tin, 0.5% copper, and cobalt alloy, which is complemented with a water soluble flux core. These solder meet J-STD-004 and exceeds J-STD-006 specifications.

This solder is a great lead-free alternative to leaded solders. It generally provides better wetting, contact angle, flow, and visual appearance than typical Sn63/Pb37 no clean solders, while still delivering excellent performance characteristics. It offers superior solder penetration into plated through holes and surface mount interconnects. Further, it is a suitable replacement for SAC305 solder since it forms brighter, shinier, and less grainy joints. Cleaning flux residue only requires water rinse or in-line cleaning after soldering. Will not easily decompose and carbonize. Minimal spattering.



Catalog Number Sizes Available Diameter Gauge Flux Core % Format
49500WS-454G 1 lb (454 g) 0.032" 21 3.3 spool

* Also available in flux core percentages: 2% to 4%


  • Lead free
  • Eutectic
  • VOC Free
  • Water soluble formula
  • Good thermal transfer
  • Fast wetting action
  • Maximizes spread
  • Meets J-STD-004B, J-STD-006C
  • RoHS compliant
  • Standard Flux Core percentage at 3.3%
  • Melting Point: 228 °C - 442 °F