Electrical Insulation Protects Users and Electronics

As electronic devices become more advanced and compact, they require more power and incorporate more complex internal technologies. Densely packed high-voltage components significantly increase device power density, creating a greater risk of electrical sparks and short circuits.

Meets Requirements

UL approved materials and solutions assure fire and device safety testing compliance.

Lightweight and Thin

Excellent choice when weight or mass is a concern, like aerospace or eMobility applications.

High Thermal Stability

Reliable choice for high-temperature medical, electrical, and electronic applications.

Protect Users

Reduce user shock risk during installation and maintenance with dielectric materials.

Prevent Short-Circuits

Electical barriers isolate flame and spark voltage.

Moisture Resistance

Efficient moisture-resistant electrical insulation performance for electronic devices and eMobility applications.

How to Cool and Protect EV Batteries Against Collision and Thermal Runaway

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Prevent Component Damage

Boyd’s dielectric materials are highly effective electrical insulators that protect components from damage caused by spark voltage. They are designed to create a barrier that prevents the flow of electrical current, ensuring that devices operate safely and reliably over an extended lifespan. Boyd’s advanced electrical insulation solutions are highly customizable and designed using a wide range of materials.

Boyd’s dielectric insulators are available with UL 94 ratings for both vertical and horizontal burn tests. UL 94 ratings assure electrical insulators can withstand direct exposure to extreme heat and flame for a specified amount of time. Flame rated materials act as flame barriers or isolators, which helps achieve UL certification and pass UL testing. We’re experts in identifying the most suitable raw materials and configurations for your product design to achieve optimal electrical insulation performance and compliance with electrical and flammability requirements.

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Solve Multiple System Functions

Boyd identifies complementary components and functionality ideal to integrate into a single component. We integrate labels and air baffle components with electrically insulating materials in an electronic enclosure to eliminate the need to source multiple components.

Server cabinet service instruction labels printed on UL 94 rated dielectric insulators isolate the server door from spark voltage, protect maintenance technicians from electrical shock, and ensure compliance with safety regulations. This integration eliminates the need to source two separate components, simplifying the design and assembly process and reducing costs.

EV Battery Solutions

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Electrical Insulation Technologies

Polymeric Electrical Insulators

Boyd’s Electrical Insulators are reliable and safe barriers or shields for high electrical energy levels in harsh environments. Excellent dielectric strength ensures that electrical equipment operates efficiently while minimizing the risk of premature electrical failure.

Boyd’s polymeric electrical insulators are available in polycarbonate, propylene, and polyimide film options making them versatile and suitable for a wide range of applications that require high electrical and breakdown voltage resistance. These materials have high electrical, chemical, and mechanical integrity even at high temperatures. Our polymeric films are available UL 94 rated and RoHS compliant.

High Durability

Withstand the stresses and strains of use in electrical devices.

High Dielectric Strength

Provides reliable electrical insulation and protects against electrical arcing.

Excellent Flexibility

Easily bent or shaped to fit the contours of the electrical components they are protecting.

Polymeric Electrical Insulation Materials and Properties

Polycarbonate Films

  • Lays flat
  • Dimensionally stable
  • Creases and cold forms well
  • High impact resistance
  • Excellent thermal stability
  • UL flammability testing approved
  • Available in thin plastic sheets with polished surfaces on both sides or a textured finish

Polypropylene films

  • Lays semi-flat
  • High impact resistance
  • Bends and cuts/scores for folding without cracking
  • Retains structural integrity and dimensional stability even in the most demanding outdoor applications
  • Non-hygroscopic with moisture absorption of 0.06%
  • UL flammability testing approved

Polyvinyl Chloride (PVC)

  • Excellent electrical insulation
  • High dielectric strength
  • Resistant to moisture, UV exposure, abrasion, corrosion, alkalies, and acids
  • Wide temperature range stability

Polyimide Films (brand name: DuPont™ Kapton®)

  • High performance blend of excellent physical, electrical, thermal, chemical, and mechanical properties
  • Puncture-resistant
  • High chemical resistance
  • UL-94 V-0 flammability rating
  • Thicknesses between 7.5 µm (0.3 mil) and 125 µm (5 mil)
  • Functional over wide temperature Range
    • Typical use cases: 23 to 200°C (73 to 392°F)
    • Functional between -269°C (-452°F) and 400°C (752°F).
  • Options:
    • FEP fluoropolymer resin which adds heat sealability, a moisture barrier, and enhanced chemical resistance.
    • Anti-Static
    • Thermally conductive
    • Cryogenic insulation
    • Corona resistant
    • Color pigmenting
    • Conformability

Polyamide Films & Sheets

  • Extruded nylon
  • Biaxially oriented polyamide
  • Oriented nylon (OPA, ONY, ON)


  • Lightweight
  • High resistance to brittleness & deterioration
  • High heat distortion temperature
  • Low frictional properties
  • Broad chemical resistance to alkalies, dilute acids, and oxidizing agents
  • Lighter gauges possess high resistance to flex-cracking, abrasion, and punctures
  • Thicker sheets are machinable for complex isolation geometries and high impact resistance


  • FDA & USDA compliance
  • Coatings for printing, oxygen barriers, and moisture barriers
  • UV resistance & stabilization that also increases tensile strength and ductility

Polyester Films

  • Polyethylene terephthalate (PET)
  • Polyethylene naphthalate (PEN)


  • High dielectric strength
  • Higher temperature stability
  • Conformable
  • High chemical, solvent and moisture resistance
  • Resist cut-through and abrasion.

Fluoropolymer Film

  • Polytetrafluoroethylene (PTFE)


  • Higher temperature stability
  • Minimum shrinkage across a wide range of temperatures
  • Extremely resistant to chemicals
  • High arc resistance
  • Free of carbonizing materials
  • Non-stick applications

Polyamide Paper

  • High voltage insulation
  • Thermal stability
  • Chemical compatibility
  • Cushioning
  • Puncture resistance
  • Mechanical toughness
  • Corona resistant
  • Improved flame retardancy
  • Nontoxic

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