Metallized Polypropylene Film Capacitor Suppliers

AnHui JuanKuang Electric Co., Ltd. is a China-based manufacturer of metallized polypropylene film capacitors, producing both metallized film and finished capacitors at our Ningguo, Anhui plant. Since 1995 we have built a vertically integrated film capacitor factory covering metallization, winding, welding, spray coating, assembly and testing. Our range serves appliance motors, HVAC, lighting, microwave ovens, power factor correction and power-electronics filtering, with more than 1,000 customers supplied across 30+ countries.

A Vertically Integrated Film Capacitor Manufacturer

We metallize polypropylene film on German coating equipment, wind it on Swiss automatic winding machines, and complete assembly and testing in-house. Controlling film, winding and assembly in one plant keeps electrical characteristics consistent between batches and lets us adjust a capacitor build to the customer's mechanical envelope. The 53,000 m² manufacturing site, 2,000 m² R&D and testing center and 40 million-piece annual output support standard ranges and OEM/ODM programs.

Our CBB-series polypropylene film capacitors are used as motor-run, lighting, filtering, DC-link and power-factor-correction components. Global appliance and lighting producers including GE, Electrolux, Samsung and Whirlpool have qualified our capacitors in their supply chains. Our role as China Metallized Polypropylene Film Capacitor Suppliers covers drawing-based configuration, compliance documentation and export packaging for distributors and project teams.

Product Range and Application Fit

Appliance Motor Capacitors

CBB60 and CBB65 washing machine capacitors, CBB65 and CBB66A air-conditioner capacitors, CBB61 fan capacitors and CBB65 refrigerator capacitors form the appliance motor range. These parts are built for continuous AC duty and for the vibration, humidity and temperature cycling found in white goods. Case style — cylindrical plastic, cylindrical aluminium, oval aluminium or square plastic — is selected to the mounting space and retention method on the appliance.

Capacitance tolerance, terminal spacing, lead length, case dimensions and marking are fixed at drawing approval. Packaging can be arranged for bulk, tray or line-side presentation. The AC motor capacitors range covers these washing machine, air-conditioner, fan and refrigerator parts.

Lighting and Microwave Oven Capacitors

Lighting capacitors are used in municipal, stadium and road lighting projects; more than 500 million lamp-use capacitors have been supplied into these applications. High-temperature constructions support luminaires where the capacitor sits close to the lamp or ballast. Microwave oven capacitors address the high-voltage section of the appliance, where voltage withstand, insulation distance and stable capacitance matter more than miniaturisation.

Power Electronics and PFC Capacitors

Power capacitors cover low-voltage shunt correction, over-voltage-protected square types, three-phase PFC, AC and DC filtering, pulse duty and DC-link assemblies. We match the capacitor to the converter topology: DC-link capacitors for inverter and automotive applications, filter capacitors for PCB or busbar mounting, and oil-filled or dry designs where the thermal and voltage profile requires them. The metallized film capacitors range lists the individual series.

Metallized Film Produced for Capacitor Winding

We produce metallized polypropylene film as part of the capacitor manufacturing chain. Film thickness, width, metallization pattern and segmentation are selected together with the capacitor design because these variables influence self-healing behaviour, capacitance stability and voltage stress in the winding.

• Polypropylene dielectric selected for low loss and stable capacitance across temperature.
• Metallized layer pattern and surface resistance matched to the winding and self-healing requirement.
• Slit roll width and edge quality controlled for automatic winding.
• Film specification retained with the approved capacitor drawing for repeat builds.

The metallized film for capacitors range covers film produced for these winding operations, with roll width, thickness and metallization pattern agreed alongside the finished part.

Critical Specifications We Confirm Before Production

We confirm the electrical and mechanical definition on an approved drawing before production:

• Capacitance and tolerance at the agreed measurement frequency and temperature.
• Rated AC or DC voltage, operating frequency and expected ripple current.
• Dissipation factor, insulation resistance and voltage-withstand requirement.
• Operating temperature class and thermal cycling profile.
• Case style, dimensions, terminal type, lead spacing and mounting hardware.
• Certification marks and environmental declarations: UL, VDE, CE, CQC, RoHS, REACH, TSCA and POPs.

Manufacturing and Quality Control

Production follows a defined route: incoming film inspection, metallizing, slitting, winding, welding, spray coating, assembly, testing and packing. In-process inspection follows each stage, and finished capacitors receive 100% final inspection against the approved drawing and the applicable standard. The quality system is certified to ISO9001 and ISO14001.

Product certifications include UL, VDE, CE and CQC, supporting market access in North America and Europe. Our engineering team holds more than 90 patents, including 16 invention patents, and works from the 2,000 m² testing center on film, winding and endurance improvements.

Customization, Marking and Packaging

OEM and ODM production is our core business. Capacitance, rated voltage, case dimensions, terminal arrangement and packaging can be customized, and we can develop a part from a drawing or a physical sample.

Custom builds are reviewed against the application's electrical duty and mechanical envelope rather than copied from a catalogue size. Where a standard CBB part already fits, we keep the standard construction and adjust only the agreed parameters; where the duty cycle or envelope differs, we propose a modified winding and case combination.

Installation, Acceptance and Maintenance

Correct installation starts with the interface: terminal type, lead spacing, mounting stud or bracket, clearance to adjacent components and wiring gauge. We supply dimensional drawings with each custom part so mechanical fit can be checked before the first production batch. Capacitors should be discharged before handling, and terminal torque and connection methods should follow the agreed drawing.

• Incoming acceptance: verify marking, dimensions, capacitance and visual condition against the approved drawing.
• Line trials: confirm fit, terminal engagement and electrical performance in the assembled appliance or converter.
• Serviceability: keep the same case and terminal interface for replacement parts to avoid production-line rework.
• Storage: keep capacitors in the original packaging, dry and within the specified temperature range.

Information We Use to Configure Your Solution

Send the application, electrical duty and mechanical constraints, and we will return a capacitor specification, drawing and quotation. For repeat business, the approved drawing and a retained sample become the reference for every subsequent batch.

• Circuit function: motor run or start, PFC, DC-link, AC or DC filtering, pulse, lighting or high-voltage microwave duty.
• Electrical values: capacitance and tolerance, rated AC or DC voltage, frequency, ripple current and expected service life.
• Environment: ambient temperature, humidity, vibration and mounting orientation.
• Mechanical data: available envelope, case style, terminal type, lead spacing, mounting stud or bracket.
• Compliance: required certification marks, safety class and environmental declarations.
• Commercial data: annual volume, batch size, packaging format, destination market and delivery schedule.

Frequently Asked Questions

What types of metallized polypropylene film capacitors do you manufacture?

We manufacture AC motor capacitors for washing machines, air conditioners, fans and refrigerators; lighting capacitors; high-voltage microwave oven capacitors; and power capacitors for PFC, filtering, pulse and DC-link duty. We also produce the metallized film used in these capacitor builds.

Can you customize capacitance, case size and terminals?

Yes. Capacitance, rated voltage, case dimensions, terminal arrangement and packaging can be customized under OEM/ODM programs. We work from a drawing or a physical sample and confirm the specification on an approved drawing before production.

Which certifications support export orders?

Our quality system is certified to ISO9001 and ISO14001, and products carry UL, VDE, CE and CQC certification. We also declare compliance with RoHS, REACH, TSCA and POPs for the relevant product ranges.

How do you control quality during production?

Each process stage has an inspection point, from incoming film and metallized film through winding, welding, spray coating and assembly. Finished capacitors receive 100% final inspection against the customer drawing and the applicable standard, and inspection records are kept for the batch.

What information do you need to quote a custom capacitor?

We need the circuit function, capacitance and tolerance, rated voltage and frequency, ripple current or duty cycle, ambient temperature, available envelope, terminal and mounting requirements, compliance marks and annual volume. A drawing or sample shortens the review.

Do you supply metallized film separately from finished capacitors?

Our metallized film range covers film produced for capacitor winding, with thickness, width and metallization pattern specified to the capacitor design. Film and capacitor production are planned together so the electrical characteristics remain consistent.