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WBR2000 series
Element 23weqwf

Unique Features

  • Negative working, aqueous processable polymer film
  • Three layer package
  • Suitable for in-via and mushroom electroplating bumping applications.
  • Suitable for photo stenciling applications.
  • Strong heat resistance.
  • High resolution capability.
  • Wide processing latitude.
  • WBRTM series is compatible with the following typical surfaces:
    • Silicon
    • Silicon Nitride
    • Sputtered copper
    • Sputtered gold
    • PI/BCB with UBM
  • Polymer film thickness: 50, 75, 100 and 120 microns
  • Unexposed Color in Yellow Light: Light Green
  • Exposed Color in Yellow light: Dark Blue

Applications

High Performance & High Resolution Multi-Purpose Polymer Film for Wafer Bumping, and Copper Pillar Applications

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