The YES-VertaCure automated, high temperature vacuum cure series of ovens is designed for today’s most advanced MEMS and semiconductor process applications. Whether it’s for proper curing of polyimide in Wafer-level Packaging (WLP)/ Redistribution Layers (RDL) applications or annealing copper in an advanced semiconductor device, the YES-VertaCure helps achieve total environmental control to increase yields and extend device performance.

The production proven platform incorporates the laminar flow technology for low particle performance using the technology of the YES-PB series. It accommodates 200 and 300mm wafers with two or four load ports and a wafer handling robot inside an integrated Class 1 mini-environment. Up to 100 wafers are loaded into a stainless steel cassette-type rack on the oven chamber door and, when loading is complete, lifted up into the vacuum chamber.

The system can accommodate a variety of processes needed to successfully cure a variety of materials, such as:

  • Polyimides
  • PBO (Polybenzoxazoles)
  • BCB (Benzocyclobutene – Cyclotene)
  • Epoxy “hybrids”

System Benefits

The YES Vacuum cure process offers 5x less outgassing than atmospheric cure processes, which allows:

  • Excellent electrical and thermal performance
  • Excellent high temperature warpage performance
  • No outgassing
  • Reduction in the number of particles
  • Shorter process time
  • Less Nitrogen used
  • No trapped solvent
  • Excellent temperature uniformity
  • Fast ROI

 The oven is ideal for your Fan-Out Wafer Level Packaging needs.  Read more about FOWLP here.

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News & Updates

Other Updates


  • February 11-13, 2020 - Visit YES at booth #904 at Medical Design & Manufacturing (MD&M) West, Anaheim, CA
  • May 26-29, 2020 - Visit YES at booth #208 at ECTC 2020, Orlando, FL
  • July 21-23, 2020 - Visit YES at Booth #5969 at SEMICON West 2020, in San Francisco, CA

About Our Company

Located in Livermore, California, Yield Engineering Systems (YES) is a privately held company that manufactures engineering process control equipment to meet the needs of innovative engineers and lab managers.