19.5 kV Breakdown Voltage and 208 MPa MD Strength from a PET Polyester Film Factory and Supplier
Product Overview
At 125μm, insulation film starts to serve higher-voltage designs. This is the range where breakdown voltage really matters, and where a weak manufacturer becomes visible fast. The 125μm PET Polyester Film delivers a 19.5 kV breakdown voltage, 208 MPa MD tensile strength, and very low 0.1% TD thermal shrinkage. Those numbers are not difficult to print on a spec sheet — the hard part is finding a PET Polyester Film Manufacturer that can reproduce them consistently, order after order.
Technical Characteristics
The following values are typical data for the 125μm specification. They are not intended as limiting specifications.
- Material: PET (Polyethylene Terephthalate)
- 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
Key Properties
- 19.5 kV breakdown voltage for higher-voltage insulation
- Balanced MD/TD tensile strength for stable processing
- Very low TD shrinkage for dimensional control
- Consistent batch performance from a qualified factory
Applications
125μm PET Polyester Film is used for electrical insulation, flyback transformers (FBT), choke coils, wire insulation and cable tape, flexible printed circuits (FPC), membrane switches, die-cut insulation parts, and spiral tube converting. This gauge suits electrical, electronic, and flexible circuit manufacturing where higher insulation margins are required.
Why Choose Jinlu Film as Your Manufacturer
Jinlu Film is a PET Polyester Film Manufacturer, Factory, and Supplier offering factory-direct pricing, consistent thickness control, and stable dielectric performance. As a factory, we support custom width and roll length, export-grade packing, and global shipping. If you are comparing PET Polyester Film suppliers, request a sample and compare our batch data against the spec sheet.
Contact us today for a factory quote, technical data, or a sample of 125μm PET Polyester Film.
