AnHui JuanKuang Electric Co., Ltd. has manufactured metallized polypropylene film capacitors in Ningguo City, Anhui Province since 1995, and air conditioner compressor capacitors are one of our longest-running volume lines. We build the CBB65 cylinder aluminum-case and CBB66A oval aluminum-case families for compressor-run, outdoor fan-motor and hermetic-motor circuits in split, window, portable and light-commercial air-conditioning equipment.
Capacitance, voltage, can dimensions, terminal layout and packaging are produced to the customer's drawing, and OEM/ODM programmes run from first sample through series supply. Annual export volume of air conditioner and refrigerator compressor capacitors exceeds ten million units.
JuanKuang is an established name among Air Conditioner Capacitors Manufacturers in China. The range sits directly under our AC Motor Capacitors family, which also covers washing machine, fan and refrigerator capacitor lines sharing the same metallized polypropylene platform.
- Metallized polypropylene film with self-healing behaviour, favourable high-frequency response and stable capacitance across temperature.
- Aluminum can construction for mechanical protection and heat spreading in compressor compartments.
- Capacitance, voltage, dimensions and packaging all customizable per programme.
- Integrated production from film metallizing through winding, welding, spray coating, assembly and test inside one industrial park.
The Range We Build
The cylindrical format used across hermetic compressor run duty, where a round can drops into an existing clamp or bracket and the terminal cluster faces the wiring harness.
Configuration focus: can diameter and height, terminal count and spacing, capacitance value, voltage class.
The oval format for chassis layouts where a flat-sided can saves height or fits a strap-style retainer; commonly specified for outdoor units and compact enclosures.
Configuration focus: oval profile and height, mounting strap position, terminal arrangement, mixed-value sections.
Application Fit in Air-Conditioning Equipment
Air conditioner capacitors provide the phase-shift and power compensation a single-phase motor needs to start and run: they add starting torque, stabilise supply voltage at the winding, protect the motor from current stress and support energy efficiency over the unit's service life. Fit is decided by the motor, not by the capacitor alone.
- Hermetic compressor run duty — continuous AC bias at can temperatures driven by the compressor dome and the surrounding airflow.
- Outdoor fan and indoor blower motors — lower capacitance values, often sharing a harness family with the compressor part.
- Combined sections — a single can carrying separate compressor and fan values where the OEM harness is designed for a dual part.
- Light-commercial and heat-pump chassis — longer daily run times, wider ambient spread and higher vibration at the mounting point.
Specifications Confirmed Before Production
Every drawing review fixes the same set of electrical, mechanical and marking variables. These are the items we confirm with the customer's engineering team and repeat in the approval drawing.
| Specification area |
What is fixed |
Effect in service |
| Rated capacitance and tolerance |
Nominal µF and tolerance band against the motor nameplate |
Starting torque, running current and thermal margin of the winding |
| Rated voltage and frequency |
AC voltage class and 50/60 Hz operating condition |
Dielectric margin under mains variation and harmonic content |
| Case format and envelope |
Cylinder or oval can, diameter, height, mounting feature |
Fit to bracket, strap and enclosure cut-out on the assembly line |
| Terminal arrangement |
Terminal count, pitch, blade or lead type, orientation |
Drop-in wiring, connector compatibility, joint reliability |
| Sealing and fill system |
Resin or impregnation system matched to ambient and duty |
Moisture resistance and capacitance drift in humid climates |
| Safety behaviour |
Safety class required by the application and end-product standard |
Predictable, verifiable end-of-life behaviour inside the enclosure |
| Marking and packaging |
Print layout, language, bulk carton or line-side packaging |
Traceability at goods-in and handling speed at the assembly station |
Materials, Construction and Manufacturing Control
Our CBB-family capacitors are wound from metallized polypropylene film produced in-house on German coating equipment, wound on Swiss automatic winding machines, then welded, spray-coated, assembled and tested within the same integrated layout. Keeping film metallizing and capacitor winding under one management system is what holds capacitance consistency across large production batches.
- 53,000 m² production floor and a 2,000 m² R&D and testing centre in Ningguo City, Anhui Province.
- Annual output of 40 million capacitors, supported by automated winding, welding, coating and test lines.
- More than 90 patents, including 16 invention patents, applied to film, winding and process development.
- Full-process inspection: raw material check, process parameter control, in-line inspection, semi-finished test, 100% final inspection and shipment quality control.
Compliance Evidence and Acceptance
We follow international quality standards and hold ISO 9001 quality management and ISO 14001 environmental management certification. Product approvals cover the market-access routes our customers need: UL, VDE, CE and CQC, with the CBB65 AC motor capacitor holding VDE A-level certification since 2015. Our engineers also took part in drafting GB/T 3667.1, the national standard for AC motor capacitors, which keeps our test practice aligned with the terminology and safety requirements used in the category.
Capacitor products comply with RoHS, REACH, TSCA and POPs requirements. For an acceptance programme we agree the inspection items, sampling plan, test records and marking checks in advance, so the goods-in inspection at the customer's plant mirrors the final inspection at ours.
Customization, Marking and Delivery Scope
Customized production is our core business. We develop from customer drawings or physical samples, and OEM/ODM support covers capacitance, voltage, dimensions and packaging, together with the printed marking on the can and carton. Prototypes move through the same winding, coating and test route as series parts, so the sample that is approved is the part that ships.
- Drawing- or sample-based development with an approval drawing issued before tooling and production.
- Carton, pallet and label layouts adapted to the customer's warehouse and line-side handling.
- Consolidated shipments combining air conditioner capacitors with other film capacitor lines where a programme needs more than one part family.
Installation, Handling and Service Life
- Discharge the capacitor before handling; a stored charge can remain after the unit is switched off.
- Mount with the can upright or as drawn, keeping the terminal face clear of harness tension and condensate paths.
- Respect the terminal pull and torque limits in the drawing; blade terminals should seat without twisting the can.
- Replace a capacitor as a matched part after any protection event, and never re-energise a can that has vented or deformed.
- Capacitance check at service intervals confirms drift long before a motor start fault appears.
Information We Use to Configure Your Solution
| Project input |
Detail we work from |
What it determines |
| Motor and unit data |
Nameplate capacitance, voltage, frequency, compressor or fan duty |
Electrical design point of the part |
| Mechanical envelope |
Available space, bracket or strap type, terminal access |
CBB65 cylinder or CBB66A oval format and can size |
| Operating environment |
Ambient range, humidity, vibration, expected run hours |
Fill system, sealing and material selection |
| Market and approvals |
Destination markets and required certification route |
Approval documentation, marking and compliance file |
| Packaging and volume |
Carton layout, label content, annual and release quantity |
Pack specification and production scheduling |
Frequently Asked Questions
Which capacitance and voltage values can you supply for air conditioner capacitors?
We build to the value on the compressor or fan-motor nameplate rather than to a fixed catalogue window. Capacitance, voltage, dimensions and packaging are all customizable, so a non-standard value or a combined compressor-and-fan section is handled as a normal drawing-based item.
What is the difference between the CBB65 and CBB66A formats?
Both use metallized polypropylene film and an aluminum case. CBB65 is the cylinder format, well suited to clamp or bracket mounting in compressor compartments; CBB66A is the oval format, which saves height and works with strap retention in tighter chassis layouts.
Which approvals apply to your air conditioner capacitor range?
Our products hold UL, VDE, CE and CQC certifications, and the CBB65 AC motor capacitor has held VDE A-level certification since 2015. Manufacturing is covered by ISO 9001 and ISO 14001, and materials comply with RoHS, REACH, TSCA and POPs.
Can you produce OEM and ODM versions with our own marking and packaging?
Yes. Customized production is our core business, and we develop from customer drawings or samples. Printed marking on the can, carton layout, label content and bulk or line-side packing are agreed in the approval drawing before production starts.
How are air conditioner capacitors tested before shipment?
Inspection runs through the whole route: incoming material check, process parameter control, in-line inspection, semi-finished testing, 100% final inspection against customer and international requirements, then shipment quality control. Inspection items and sampling for acceptance can be agreed with the customer's quality team in advance.
What capacity does JuanKuang have for compressor capacitor programmes?
Our 53,000 m² facility in Ningguo City produces 40 million capacitors a year and exports more than ten million air conditioner and refrigerator compressor capacitors annually. Film metallizing, winding, welding, coating, assembly and testing all run inside one integrated site.
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