Undoped Silicon Wafers High Resistivity Float Zone (FZ)

University Wafer Silicon Wafers and Semicondcutor Substrates Services
University Silicon Wafer for Production

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We have a large selections of substrates in stock. Or if you send us your specifications and quantity for an immediate quote.

Undoped Silicon Wafers


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We have a large selection of undoped Si Wafers in stock. Let us know if you need a quote on your specs.

  • 25.4mm Undoped (100) >1,000 ohm-cm 500um SSP
  • 76.2mm Undoped (100) >5,000 ohm-cm 500um DSP
  • 100mm Undoped (100) >20,000 ohm-cm 500um SSP
  • 150mm Undoped FZ (100) >10,000 ohm-cm 500um SSP
  • 200mm Undoped FZ (100) >1,000 ohm-cm DSP 850um

Undoped Silicon, Can Also Be Called Intrinsic or Float Zone (FZ)

Undoped Si is pure silicon without any significant dopant throughout the wafer. Intrinsic silicon is neither n+ or P+.

We have a large selection of undoped silicon in the following grades:

  • Mechanical Grade
  • Test Grade
  • Prime Grade

Silicon Wafers in stock from various manufacturers including opsil, ITME, and many more.

We also have:

Thinning Undoped Silicon Wafers

We can also thin our undoped silicon wafers. In some cases 10 micron thick is possible. And we can deposit thermal oxide, nitride and thin films.

Other Semiconductor Services that we provide include:

  • Thermal Oxide (Wet and Dry) up to 10um.
  • Silicon Nitride (SiN) (LPCVD and PECVD)
  • Vacuum Evaporation Pt, Ru, Pd, Au, Ag, Co, Ti, Cu, Al, Ta, and Ni with thickness ranging from 10nm to 2000nm
  • Metal Sputtering includes single layer and/or the combination of the following elements: Ta, TaN, Cu, Ti, TiN, Al, Al-Si-Cu, Al-Cu, Al-Si, TiW, W, WN, WSi, and Cr.
  • Oxide Strip & Clean used to remove particles and contamination. We ensure cleanliness of wafers after cleaning by checking particles using near UV lamps.
  • Copper Plating available for 200mm and 300mm wafers with thickness ranging between 0.3 microns and 20 microns. We have 1.5um Cu plated wafers in our inventory.
  • Thick Resist Patterning offers customers thick dry resist film patterning on UBM (Under Bump metal)
  • Photoresist coating ranging from 0.7um to 40um thick photoresist depending upon the photoresist in use. We have some photoresists formulated for broadband, i-Line, and Polyimide in our inventory.