Bare Wafers & Substrate Sourcing

Silicon Wafer Sizes & Types

Philtech supplies silicon wafers in the following sizes and types.

Silicon Wafer Specifications

Contact us to discuss detailed specifications for silicon wafers.

Silicon Wafer Applications

The examples below list specifications to check and relevant wafer types for each application.

• Particle Monitoring

  Used to compare particle counts before and after processing to monitor equipment and process cleanliness. Also used to check the sensitivity of inspection equipment.

  Specifications to check

  Particle specifications (size and count)

  Relevant wafer types

  Particle monitor wafers

• Substrates for Deposition & Film Evaluation

  Used as substrates for measuring film properties, thickness, sheet resistance, and other characteristics. You can also request film deposition together with the substrates.

  Specifications to check

  Resistivity, thickness

  Relevant wafer types

  Dummy-grade wafers, High-resistivity wafers, Low-resistivity wafers

• Photolithography Evaluation

  Used to evaluate resist coating uniformity, establish exposure and focus conditions, and evaluate development.

  Specifications to check

  Flatness (SFQR, TTV, warp)

  Relevant wafer types

  Photolithography wafers

• Back-End Processing Evaluation

  Used to evaluate conditions for backgrinding, dicing, tape application, and other back-end processes.

  Specifications to check

  Thickness, polishing specifications (single-side or double-side), cleanliness

  Relevant wafer types

  Coinroll wafers, Thin wafers

• Wafer Handling & Equipment Setup Evaluation

  Used for teaching wafer handling robots, checking aligners and FOUPs, equipment demonstrations, and similar tasks.

  Specifications to check

  Notch or orientation flat, thickness, bow, warp

  Relevant wafer types

  Dummy-grade wafers, Mechanical-grade wafers, Thin wafers

• Inspection & Metrology Equipment Evaluation & Demonstrations

  Used as reference substrates for setup, demonstrations, and comparative evaluation of SEMs, defect inspection equipment, film thickness measurement instruments, and similar equipment.

  Specifications to check

  Particle specifications, flatness, crystal orientation

  Relevant wafer types

  Particle monitor wafers, Photolithography wafers

• Dummy Wafers & Equipment Conditioning

  Used to fill empty slots in batch furnaces to make temperature and gas flow more uniform, season chambers, and run equipment without product wafers before establishing process conditions.

  Specifications to check

  Quantity, cost, basic specifications

  Relevant wafer types

  Dummy-grade wafers, Mechanical-grade wafers

• Substrates for Research & Samples

  Used as research samples. Depending on the product, small quantities or smaller pieces are available. We also supply wafers with machined recesses that serve as carriers for processing small pieces in equipment for larger-diameter wafers.

  Specifications to check

  Size, resistivity

  Relevant wafer types

  Wafer strips, High-resistivity wafers, Low-resistivity wafers, Wafers with machined recesses

Other Substrate Materials

We supply various substrates in addition to silicon wafers. Please let us know the specifications required for your application.

Wafer Cases & Other Cleanroom Supplies

We also supply cleanroom materials for wafer storage, handling, and packaging. Some items are in stock; please contact us for current availability.