The Best Plastics for the Semiconductor Industry

Semiconductors, wafers, and microchips power virtually every modern electronic assembly. These microproducts require precision machined plastic components that achieve complete accuracy and reliability at all stages of production and operation. As a result, plastics used in the semiconductor industry must meet strict requirements:

  • Lightweight
  • Resistant to harsh and corrosive chemicals
  • Resistant to high or low temperatures
  • Feature low outgassing characteristics
  • Static dissipative
  • Excellent electrical insulation capabilities

The best plastic for the semiconductor industry can vary depending on your unique production needs, but these popular options will deliver high-performance results for most runs when machined by an expert shop, such as Upland Fab. Call 909-986-6565 to receive assistance evaluating your precision plastic options.

Plastics Used for Semiconductors & Electronic CNC Productions


Acetal, or POM or polyoxymethylene, is a popular plastic for the semiconductor industry as it matches tight tolerances for precision productions. Acetal offers excellent dimensional stability, extreme durability, low moisture absorption, and high insulation capabilities. Other characteristics include:

  • Operating temperatures from -40°F to 230°F (-40°C to 110°C)
  • Available as a homopolymer or copolymer to match your specifications
  • Easily machinable for quick turnarounds

Polycarbonate (PC)

Also known by the name brand Lexan®, polycarbonate (PC) is a resin thermoplastic that exhibits toughness, high impact strength, and high optical clarity. The material’s low moisture absorption and high-voltage insulation make it an ideal solution for semiconductor and electronic assemblies. It also offers:

  • Operating temperatures from -4°F to 265°F (-20°C to 130°C)
  • Low outgassing characteristics for high purity
  • Anti-shock and static dissipating capabilities


Kynar goes by many names, including PVDF plastic or polyvinylidene fluoride. It is a good plastic for the semiconductor industry as it displays excellent resistance to chemicals and high temperatures while offering excellent durability and easy weldability. Other traits include:

  • Operating temperatures from -4°F to 284°F (-20°C to 140°C)
  • Excellent mechanical, electrical, and chemical properties
  • Long operational lifespan to deliver consistent results over decades of use


Polyetheretherketone, or PEEK, is a semi-crystalline plastic ideal for wafer-processing applications. It features low outgassing and better mechanical properties than PVDF and other materials. It does not undergo hydrolysis, making it a great solution for processes involving water or steam. PEEK also offers:

  • Operating temperatures from -94°F to 480°F (-70°C to 250°C)
  • High strength and excellent dimensional stability
  • High resistance to chemicals and abrasive substances


Teflon, or polytetrafluoroethylene (PTFE), is a popular choice for the semiconductor industry due to its very high breakdown voltage threshold. As a chemically inert plastic, PTFE is not a strong charge carrier, aiding it in maintaining electron stability as the electrons move through a current. Other traits include:

  • Operating temperatures from -328°F to 450°F (-200°C to 232°C)
  • Dielectric constant around 2.1
  • Very low coefficient of friction


Ultem, or polyetherimide (PEI), is one of the highest performing thermoplastics on the market. From providing high performances at a range of temperatures to offering excellent dimensional stability, it is one of the best plastics for the semiconductor industry. It offers:

  • Operating temperatures from -454°F to 420°F (-270°C to 215°C)
  • Superior strength and stiffness
  • Many available options to meet your thermal, electrical, physical, and/or mechanical specifications

Upland Fab Machines the Best Plastics for the Semiconductor Industry

Machining custom plastic parts for the semiconductor industry requires precision, accuracy, and strict adherence to quality protocols. The experienced team at Upland Fab is at your disposal. We use advanced in-house processes and state-of-the-art CNC machining to deliver reliable results that match exacting specifications. Contact us or request a quote to learn more.
Precision Plastic and Composite CNC Machining

Precision Plastic and Composite
CNC Machining since 1970.

Precision Plastic and Composite CNC Machining
©2024 Upland Fab - 1445 W Brooks Street, Unit L, Ontario, California 91762 - Phone: (909) 986-6565
Request Quote