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Riston® FX Dry Film Photoresist

Printed circuit board fabricators face increasing challenges every day. How to produce fine lines at high yields? How to cost effectively handle the harsh selective metallization processes? DuPont has developed the Riston® FX Series of photoresists to help you address these issues.

Riston® FX-250 Series Dry Film Photoresist


  • Riston® FX-250 dry film photoresist is ideal for the most challenging new portable designs because it's tough enough to stand up to harsh selective metalization processes, such as electroless nickel immersion gold.
  • Riston® Special FX provides precision masking for complex, high value circuit designs and eliminates the inefficiencies of manual taping. You get excellent adhesion and conformation on a wide variety of surfaces and it strips quickly and easily after processing. This enables you to produce consistently reliable boards for more dependable portable devices at a faster rate and at lower cost.

Riston® FX-900 Series Dry Film Photoresist

Riston® FX-900 is the superior film for fine-line printed circuit boards. This film offers the fabricator:

  • Superior resolution for precise imaging of complex high value circuit designs to to 10 µm
  • Multifunctional capabilities - ideal for all fine line work, etching and plating
  • Excellent conformation and adhesion
  • Clean processing with patented sludge-free formulation technology

See what Riston® FX-900 can do for your yields.