••• Laser Cut SMT Stencils - shadow mask

shadow mask
These are low cost SMT Stencils made out of Mylar or Kapton

SHADOW MASK

A shadow mask is a micromachined templete (typically a laser cut or chemically etched thin sheet of metal) use to deposit material onto the substrate.

Deposition mask techniques are used in a wide range of vacuum-chamber evaporation and sputtering processes to fabricate both simple and complex micro-engineered electronic components and products. They are increasingly being used to deposit inks onto substrates during the manufacture of flat panel displays.

MULTIMEDIA VIDEO FEATURES

Laser Cutting a Shadow Mask using a LPKF Laser.

STENCILS UNLIMITED OFFERS LASER CUT AND CHEMICAL ETCH SHADOW MASKS

The following table shows the different between the two processes:

LASER CUT PROCESS

  • Lead time: 24-48 hours
  • Material: Stainless Steel, Invar and Kovar
  • Max size: 24"x24"
  • Thickness: 0.001"-0.002"
  • Smallest aperture size: 0.002"

CHEMICAL MILLING PROCESS

  • Lead time: 2-3 days
  • Material: Stainless Steel, Invar, Copper, Brass
  • Max size: 24"x24"
  • Thickness: 0.001"-0.002"
  • Smallest aperture size: 0.005"
  • Tolerance: depends on material thickness (0.001"-0.005")
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30%

The Best Prototype PCB Prices: $15 ea 2L; $35 ea 4L; $70 ea 6L; $100 ea 8L
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