Ferrite core insulation sleeve for Flyback Transformer

High-quality polyimide insulation sleeve designed for ferrite flyback transformer cores, providing a robust dielectric barrier between the ferrite core and high-voltage windings. Polyimide offers excellent dielectric strength, high temperature resistance, and outstanding long-term reliability, making it ideal for demanding high-voltage and high-frequency applications.

This sleeve is especially useful when building, repairing, or modifying high-voltage flyback transformers where insulation stress between the winding and ferrite core can become a limiting factor. By adding an additional insulation layer around the ferrite leg, the sleeve helps reduce the risk of insulation breakdown, internal arcing, and carbon tracking under high-voltage operation.

The sleeve fits perfectly with our 25kV AC flyback transformer cores and can be used as a replacement insulation sleeve if the original insulation has been damaged or burned through under extreme high-voltage stress. It is also suitable for custom transformer builds, experimental high-frequency transformer designs, and repair work where reliable core-to-winding insulation is critical.

Because of its thin wall thickness, the sleeve adds strong electrical insulation while taking up minimal winding space, making it practical for compact transformer designs where the available winding window is limited.

Technical Specification: