Tungsten Disc, W

HTWW1237

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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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Data sheet

MaterialsTungsten&Tungsten alloy
Purity99.9% - 99.99%
StandardASTM B777

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Tungsten discs 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.

HM is a trusted supplier of pure Tungsten and Tungsten alloy, we offer tungsten (W) discs in various sizes. Other specifications are also available upon request.

Tungsten Disc Specification

  • Size: Diameter: 1.0 mm – 150.0 mm (0.04” – 6.0”) x Thick: 0.1 mm – 12.0+ mm (0.004” – 0.5”+)
  • Surface: Flatness<0.005mm, Parallelism<0.01mm, Ra<0.063mm, Tolerance: ±0.025mm.
  • Material: Tungsten or Tungsten heavy alloy
  • Purity: 99.95%, 99.99%, 99.999%
  • Standard: ASTM B760
  • Coating: Ru, Rh, Ni, Ag, Au, etc.

Tungsten Disc Application

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

Tungsten Disc Order Info

  • 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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