Tungsten (W) Disc

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
Purity99.95% ,99.99%
StandardASTM B777

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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.

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

Tungsten Disc Specification

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

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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