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Molybdenum (Mo) Disc / Square


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Molybdenum Disc has the characteristics of high melting point, good strength, stable chemical composition, excellent processing performance, excellent conductivity and corrosion resistance, and small linear expansion coefficient. At present, the molybdenum circle is the best basic material for thyristor rectifier components.

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Data sheet

MaterialsMolybdenum metal/TZM/MoLa Alloy
Purity99.9% - 99.99%
StandardASTM B386

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Molybdenum disc includes pure molybdenum disc and coated molybdenum disc. Coated molybdenum disc is PVD or evaporation with Ruthenium (Ru), Rhodium (Rh), Nickel (Ni), Silver (Ag), Gold (Au), etc. Molybdenum discs are widely used as contact materials in silicon-controlled rectifier diodes, transistors, and thyristors. Molybdenum has similar coefficients of thermal expansion (CTE) to silicon combined with moderate thermal conductivity and is therefore appropriate for large area power devices where considerable heat is generated. We can also provide Molybdenum Sputtering Target.

Molybdenum Disc 

Molybdenum Disc Specifications

  • Purity: 99.95% min
  • Size: 5-150mm diameter x 0.2-12.0mm thickness, tolerance: ±0.025mm
  • Flatness: <0.005mm
  • Parallelism: <0.01mm,
  • Roughness Ra<0.063mm
  • Plating: Ru, Rh, Ni, Ag, Au, etc.
  • Material: Mo, TZM, MoLa alloy.

Molybdenum Disc Applications

  • Silicon Controlled Rectifiers Diodes
  • Transistors
  • Thyristors (GTO ‘s)
  • Heat Sink Bases in IC’s, LSI’s and Hybrid Circuits                    

Molybdenum Square

Molybdenum Square

Molybdenum Disc7 ~ 100mm Diameter0.25 ~ 4.0mm Thickness
Molybdenum Square25 ~ 100mm Width/Length0.5 ~ 1.5mm Thickness
Flatness Tolerance< 4um
RoughnessRa 0.8

Molybdenum Disc Packaging

The Mo disc will be packed in a wooden case supported with soft materials to ensure that the products thus packed will not shift inside the cases.

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