Mylar EL polyester (BoPET) film offers exceptional electrical insulation for electronics and motors, with thicknesses from 48 to 500 gauge (about 12 to 125 microns). It delivers high dielectric strength up to 11 kV/mil at 25°C, a stable dielectric constant of 3.0–3.3 at 1 kHz, and volume resistivity of 10^18 ohm·cm, ensuring reliable performance in high-voltage applications. Key features include tensile strength of 150–215 MPa, operating range of -70°C to 150°C (melting point 250–260°C), low moisture absorption (0.3–0.5%), and chemical resistance to oils and solvents, plus dimensional stability with low shrinkage for durable, flexible use in circuits and laminates.