Key Specs, Thermal Behavior, and Selection Tips for 125μm Polyester Film
Product Overview
When engineers compare insulation materials, 0.125mm PET Film often stands out for its combination of higher dielectric strength and stable mechanical performance. At 125μm, this polyester film is thick enough to handle demanding electrical loads, yet still flexible enough for efficient converting and die-cutting.
Technical Characteristics
The following values are typical data measured under specified test conditions.
- Thickness: 125 μm
- Tensile Strength: MD 208 MPa / TD 216 MPa
- Elongation at Break: MD 171% / TD 151%
- Thermal Shrinkage at 150°C, 30min: MD 0.9% / TD 0.1%
- Breakdown Voltage: 19.5 kV
- Volume Resistivity at 20°C: 3E+17 Ω·cm
- Dissipation Factor at 20°C, 1kHz: 43
- Coefficient of Friction: μs 0.6 / μd 0.4
- UL746B: RTI Electrical 105°C, Mechanical 105°C
Key Properties
- Higher breakdown voltage for improved insulation safety
- Balanced tensile strength in both MD and TD directions
- Low thermal shrinkage for dimensional stability
- Consistent surface friction for reliable handling
Applications
0.125mm PET Film is suitable for electrical insulation such as flyback transformers (FBT), choke coils, wire insulation and cable tape. It also performs well in flexible printed circuits (FPC), membrane switches, die cut insulation parts, mold release, adhesive tape, and spiral tubes.
Why Choose Us
We supply 0.125mm PET Film with stable thickness control, reliable electrical performance, and flexible order support. Custom slitting is available for different widths.
Get technical data or a quick quotation for 0.125mm PET Film today.
