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TAMURA EC-15-7 scaling powder

Brief introduction of Tamura Tamura EC-15-7 flux characteristics;

  • Good weldability, suitable for welding with different lead-free alloys such as tin/silver/copper, tin/silver/copper/bismuth and tin/copper.
  • This product can eliminate the defects such as non-wetting and continuous welding when soldering printed circuit boards with patches and bulk components.
  • There is little flux residue, and the color of the product is close to transparency, so the substrate does not stick to hands after welding.
  • Flux residue is non-corrosive, so the electrical insulation performance of the welded product is excellent.
  • Uniform coating effect can be achieved regardless of foaming or spraying.

 

Tamura Tamura EC-15-7 flux specification parameters:

name of an article EC-15-7 test method
exterior Pale yellow transparent liquid estimate range by eye
proportion (20℃) 0.81 JIS Z 3197(1999) 8.2.2
Solid content (%) 6 JIS Z 3197(1999) 8.2.2
hue 2 JIS Z 3197(1999) 8.2.3
viscosity (mPa·S) 3.9 JIS Z 3197(1999) 8.2.1
Halogen content (%) 0.02 JIS Z 3197(1999) 8.1.4.2.1
Solder diffusivity (%)

89 (Sn/Pb37)

77 (Sn/Ag3.0/Cu0.5)

76 (Sn/Ag2.5/Cu0.5/Bi1.0)

73 (Sn/Cu0.7)

JIS Z 3197(1999) 8.3.1.1
Insulation impedance (Ω) 2×109

JIS Z 3197(1999) 8.5.3 

40℃ 90%R.H.

Copper plate corrosion qualified JIS Z 3197(1999) 8.4.1

 

 

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