Supercapacitor Separator Membrane
> Ultra-thin microporous membranes separating electrodes in electric double-layer capacitors (supercapacitors). These membranes are essential for the capacitor's function and are not usable for other purposes, making them parts of fixed capacitors.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the membrane is imported with electrodes, forming a complete supercapacitor.
Complete capacitors are classified under their specific type, not as parts.
If the membrane is a general microporous plastic film not specific to capacitors.
Plastic plates, sheets, and film are classified in Chapter 39.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• > Classify the membrane as a capacitor part, not as a filter or textile
• Provide specifications showing its microporous structure is designed for supercapacitor use
• If the membrane is made of plastics, ensure it is not classified as a plastic article of Chapter 39
Related Products under Tariff item 8532.90.00
Capacitor End Cap Assembly
> Pre-assembled metal end caps with terminal pins, designed to hermetically seal electrolytic capacitors. These assemblies are essential for the structural integrity and electrical connectivity of the capacitor, and are not usable independently.
Capacitor Mounting Bracket
> Stamped steel or aluminum brackets designed to secure large power capacitors to a chassis. These mechanical parts are shaped for specific capacitor models and are essential for mounting, thus considered parts of capacitors under heading 85.32.
Ceramic Disc Capacitor
> A fixed ceramic disc capacitor used for filtering and decoupling in electronic circuits. Although presented as a finished capacitor, it is a complete article of heading 85.32, not a part, and thus falls under the parts tariff item only if imported as a component for further assembly.
Electrolytic Capacitor Spacer
> Precision plastic or phenolic spacers used to separate capacitor elements inside aluminum electrolytic cans. These spacers maintain internal structure and insulation, and are essential for the capacitor's function, thus qualifying as parts of capacitors.
Film Capacitor Metallized Film
> Metallized polypropylene or polyester film rolls used as the dielectric in plastic film capacitors for power electronics. These semi-processed films are specifically manufactured for capacitor assembly and are not usable for other purposes, making them parts of fixed capacitors.
Mica Capacitor Silver Electrode Paste
> Silver-bearing conductive paste applied as electrodes on mica sheets for high-precision capacitors used in RF applications. This paste is a functional material essential for capacitor fabrication, and is considered a part of fixed capacitors when imported for that purpose.