Tungsten (W) Disc

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Tungsten disc and tungsten squares are widely used as contact materials in silicon controlled rectifier diodes, transistors and thyristors. 

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Tungsten disc and tungsten squares are widely used as contact materials in silicon-controlled rectifier diodes, transistors, and thyristors. Tungsten 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. Further applications include the use of Tungsten as heat sink bases in IC’s, LSI’s, and hybrid circuits.

ProductTungsten Disc
SizeDiameter: 1.0 mm – 150.0 mm (0.04” – 6.0”)
Thick: 0.1 mm – 12.0+ mm (0.004” – 0.5”+)
Specificationsflatness<0.005mm, Parallelism<0.01mm,
Ra<0.063mm, tolerance: ±0.025mm.
MaterialTungsten or Tungsten heavy alloy
StandardASTM B760
purity99.95%, 99.99%, 99.999%
CoatingRu, Rh, Ni, Ag, Au, etc.

Related products: Tungsten squares, Tungsten sputtering target

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

Heeger Materials (HM) is a trusted supplier of pure Tungsten and Tungsten alloy. We offer tungsten (W) disc with various sizes. Other specifications are also available upon request.

Orders for material under this specification shall include the following information:

  • Quantity (weight, number of pieces, or another suitable measure of quantity)
  • ASTM grade (See above Tungsten and Tungsten Alloy ASTM Grade)
  • Dimensions (Diameter and thickness)
  • Coating, if any
  • Additions to the specification and supplementary requirements, if any

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