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Microetchants

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Preparing a Copper Surface prior to a Resist or Plating Application

Preparation of the copper surface in PCB fabrication is key to adhesion of resists and any subsequent plating operation. The topography that is created provides a mechanical bond which improves as micro roughness increases. Scratches from scrubbing, cause inconsistent resist adhesion, resulting in increased opens and shorts as the line width and space goes down. To fabricators, this means a lower first pass yield and higher costs of operation due to increased scrap rates. Microetchants, such as sodium persulfate, have been replacing scrubbing operations for the past several years so that finer features can be developed with resists.

TechniEtch 1118 - Better Typography at a Lower Cost

TechniEtch 1118 is a proprietary replacement for persulfate and peroxide based microetches. It can be utilized prior to application of plating and etch resists or prior to copper and electrolytic or electroless nickel. TechniEtch 1118 is designed to produce better topography with lower etch depth and with higher copper loading levels. This translates into more panels per volume of etch solution.

  • TechniEtch 1118 calculation
    TechniEtch 1118 calculation
  • TechniEtch 1118 etch rate vs copper concentration on ED copper
    TechniEtch 1118 etch rate vs copper concentration on ED copper

TechniEtch 1688 - High performance Copper Micro Etch for Fine Features

TechniEtch 1688 is an organic acid based copper micro etch engineered to produce optimum adhesion of polymer coatings. TechniEtch 1688 improves yields of fine features with plating resists, etch resists or solder mask, especially where adhesion is critical under harsh conditions like HASL, ENIG, and Immersion Tin. TechniEtch 1688 provides an optimum uniform copper surface appearance desired for AOI detection.

Formulated to be used in horizontal spray applications for a wide variety of products, the TechniEtch 1688 processing sequence is as follows:

  • Solder Mask and Dry Film Adhesion: Adhesion is critical as solder mask dams and dry film structures go below 75 microns. The mechanical bond sites created by the TechniEtch 1688 dramatically improve adhesion and the ability for these fine features to survive developing and plating, even with harsh chemical operations like immersion tin and ENIG.
  • High AOI Yields: TechniEtch 1688 not only provides a consistent surface for AOI, but the resultant color is optimum to eliminate false rejects typical with competitive micro etch chemistry.
  • High Copper Capacity: For feed and bleed operations, the recommended copper level is 35 gm/l. For batch mode operations, copper can be operated as high as 50 g/l/.
  • Controllable Low Etch Depth: Typical etch depths are 0.8 to 1.0 microns (~30-40 micro inches). Several studies have been done demonstrating that the surface topography is consistent even with changes in temperature, Cu concentration and equipment set up.
  • TechniEtch 1688 Etch Depth vs Temp
    TechniEtch 1688 Etch Depth vs Temp

Downloadable Files

TechniEtch 1688 Fact Sheet
TechniEtch 1688 Press Release

Downloadable Files

TechniEtch_1688_FB_Fact_Sheet_02142014[1].pdf

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  • Applications
    • Semiconductor
      • Fabrication & Packaging Chemistry
        • Copper
        • Nickel & Tin
        • Precious Metals
        • Photoresist Strippers
        • Metal Etchants
        • Cleaners
      • High Purity Chemistry
      • Equipment: Research & Development
        • SEMCON 1000
        • SEMCON Fountain
    • Components, Lead Frames, Connectors
      • ECLC Chemistry
        • Connectors
        • Lead Frames/LED Substrate Applications
        • Active & Passive Components
      • ECLC Equipment
    • Printed Circuit Boards
      • Chemistry
        • Final Finishes
          • ENIG & ENEPIG
        • Electrolytic Copper
        • Electrolytic Nickel & Precious Metals
        • Metallization
          • Graphite
        • Microetchants
      • Imaging Products
      • Process Control - EBA
      • Equipment
    • Industrial
      • Pretreatment
        • Cleaners
        • Activators
        • Etchants
      • Electrolytic Plating
        • Nickel
        • Tin
        • Silver
        • Copper
        • Zinc (EU Only)
      • Electroless Plating
      • Immersion
      • Post Treatment
        • Anti Tarnish
        • Passivation
        • Coatings
        • Strippers
      • Industrial Equipment
      • Anodizing Equipment
    • Solar
      • Deposition Chemistry
      • Plating Resist for Solar
      • Engineered Powder & Flake
    • Decorative
      • Pretreatment
        • Soak Cleaners
        • Electrolytic Cleaners
        • Pickling Solutions
      • Plating Chemistry
        • Gold/Gold Alloy
        • Silver
        • Tin/Tin Alloy
        • White Bronze
        • Nickel/Nickel Alloy
        • Copper
        • Palladium/Palladium Alloy
        • Brass
      • Coatings & Coloring
        • Cataphoretic Lacquers
        • Color Treatments
      • Post Treatment
      • Glass Etching
      • Equipment
    • Medical
      • Chemistry
      • Equipment
    • 3D-Printing
      • Chemistry
      • Equipment
    • Application Support
      • Application Guides
      • Application Notes
  • Chemistry
  • Equipment
    • Automated Systems
      • Hoist Systems
        • Cantilever/Sidearm
        • Rail/Rim Runner
        • Overhead Hoist
        • Hoist Automation
        • Hoist Retrofits
      • Batch Systems
        • Barrels
        • Vibratory
        • SBE Technology
      • Loose Parts Processing Systems
        • Single Parts (MP300)
        • Selective Pin (CDP2000)
        • Panels (MP100)
        • Cut Strip (Leadframes)
        • Finger Plater (FFP)
        • Single Piece (MP500)
      • Continuous
        • Reel to Reel
        • Roll-to-Roll (MP200)
      • Turnkey
    • Finishing Equipment Supplier
      • Advanced Engineered Systems
    • Manual Lines
      • Wet Benches/Modules
      • Tank Lines
    • Laboratory and R&D
      • Mini Lines
      • High Speed Reel to Reel Test Cells
      • Wafer Plating Test Cells
    • Parts, Supplies & Accessories
      • Consoles, Work Stations, Hoods, Benches & Tables
      • Mazerustar Planetary Mixers
        • Demonstration Videos
      • Amp Hour Meters, Timers & Chemical Feeders
      • Anodes, Baskets, Bags & Hooks
      • Filtration
      • Precious Metal Recovery
      • Rectifiers
      • Tanks & Auxiliary Equipment
      • Ultrasonic and Aqueous Cleaners & Dryers
      • Selective Plating
    • Process
      • Anodizing
      • Electropolishing
  • Engineered Powders
    • Products
    • Global Representatives
    • Equipment
      • Conductivity Test Apparatus
        • Tape Application Jig
    • Engineered Powders News
    • Safety Data Sheets (SDSs)
    • Daily Metal Prices
    • Conflict Minerals Report Request
    • ISO 9001:2015 Certification
    • Contact Us
  • Analytical Controls
    • Capabilities
      • Electroanalytical Methods
      • Data Analysis
      • Volumetric Analysis
    • Process Control Products
      • Real Time Analyzer (RTA)
        • RTA 3D
        • RTA Classic
        • ACE
        • SSF RTA 3D
        • PHD Option
      • EBA
        • EBA 3D
        • EBA 3D: Plus Option
        • EBA Classic
        • Technic Elevate Analyzer
      • Automatic Process Titrator
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