0.35mm PET Film
This is the heaviest standard gauge in the range. 0.35mm PET film (measured at 342μm) pushes breakdown voltage to 31.2 kV and keeps volume resistivity at 3E+17 Ω·cm, so it is the choice when insulation must also act as a structural layer. It holds its shape under pressure, resists punctures, and gives die-cut parts the stiffness they need on the assembly line.
Key Specifications
| Thickness | 342μm (nominal 0.35 mm) |
| Tensile strength | MD 164 MPa / TD 164 MPa |
| Elongation at break | MD 195% / TD 167% |
| Thermal shrinkage at 150°C, 30 min | MD 0.9% / TD 0.7% |
| Breakdown voltage | 31.2 kV |
| Volume resistivity at 20°C | 3E+17 Ω·cm |
| Dissipation factor at 20°C, 1 kHz | 40 |
Applications
High-voltage insulation where mechanical support is also required, transformer and choke coil insulation, wire and cable tape, flexible printed circuits (FPC), membrane switches, die-cut insulation parts, mold release, adhesive tape, and spiral tube converting.
Target industries: electrical and electronic manufacturing, transformer and coil winding, power supply, flexible circuitry, and heavy industrial insulation.
Why Choose Jinlu Film
- Highest breakdown voltage in the standard range
- Stable batch-to-batch electrical and mechanical performance
- Custom width and roll length
- Export-grade packing and global shipping support
- Factory-direct pricing
Compare With Other Thicknesses
For thinner film, see 0.25 mm or 0.188 mm. We also list a 350μm PET film for motor insulation. Everything is in the PET film category. To learn more, read 0.35mm PET film: when maximum dielectric strength matters, 350um PET motor insulation film for high-voltage motors and the PET insulation film guide.
FAQ
What is the breakdown voltage of 0.35mm PET film?
31.2 kV, as listed in the specifications above.
Why is the thickness listed as 342μm?
The film is nominally 0.35 mm, and the measured thickness is 342μm.
Can you customize width and roll length?
Yes. Custom width and roll length are available.
Can I get samples?
Contact us with your width and application, and we will send a quote and samples.
