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Etchants of Micro Roughening of Copper Surface

Micro-roughing etching agents EMR series

This is a micro-roughing etching agent capable of forming dense unevenness on copper surfaces.

  • It obtains sufficient resin adhesion with a small amount of etching.
  • Because there is little surface unevenness, less stripping residue remains in dry film stripping.
  • Because there is less scratching compared to conventional roughing treatments, it is also applicable to treatments in conveyor lines.

Clean Etch EMR-2000

Because there is small surface unevenness,does not impair the high frequency characteristics of the wiring. It is also ideal for dry film resist pretreatment.

EMR-5000

Clean Etch EMR-7000

This is capable of forming surfaces with good adhesion at etching thicknesses of 0.5 µm or less on solder resists and interlayer insulating resins.

EMR-7000

Main Applications

  • Dry film pretreatment
  • Solder resist pretreatment
  • Alternative for blacking treatment