Tongfeng Electronics Products

Tongfeng Electronics manufactures a comprehensive range of film capacitors including AC motor capacitors (CBB60, CBB61, CBB65 series), DC-link capacitors for power electronics, snubber capacitors, filtering capacitors, and energy storage capacitors. Their AC motor capacitors are widely used in home appliances such as air conditioners, refrigerators, and washing machines. The DC-link capacitors serve industrial applications including variable frequency drives, solar inverters, and UPS systems. All products utilize metallized polypropylene or polyester film technology with self-healing properties for enhanced reliability.

Browse our product categories to find the specific Tongfeng capacitor type for your application, or contact our FAE team for selection assistance.

Selecting the right Tongfeng capacitor requires considering several key parameters. First, determine the capacitance value based on your circuit requirements - for AC motor applications, this typically ranges from 1uF to 100uF depending on motor power. Second, select the voltage rating with appropriate safety margin - generally 1.5 to 2 times the operating voltage. Third, consider the temperature rating based on your operating environment - standard ratings are 70C, 85C, or 105C. Fourth, evaluate the physical dimensions and mounting requirements for your enclosure. Finally, verify that the capacitor meets any required certifications such as UL, VDE, or CQC for your target market. Our technical team can assist with detailed calculations and selection guidance.

Contact our FAE team with your application requirements including voltage, capacitance, temperature, and physical constraints for personalized selection recommendations.

Tongfeng's CBB60, CBB61, and CBB65 capacitors are all metallized polypropylene film capacitors designed for AC motor applications, but they differ in construction and application. CBB60 capacitors are cylindrical plastic-cased capacitors with wire leads, typically used in washing machines and pumps. CBB61 capacitors are rectangular plastic-cased capacitors with quick-connect terminals, commonly used in ceiling fans and air conditioner indoor units. CBB65 capacitors are cylindrical aluminum-cased oil-filled capacitors with high reliability and long life, primarily used in air conditioner compressors and refrigeration equipment. The CBB65 series offers the highest reliability and longest operational life due to its oil-impregnated design and aluminum case construction.

Choose CBB60 for general-purpose motor applications, CBB61 for fan applications with terminal connections, and CBB65 for compressor applications requiring maximum reliability.

When selecting Tongfeng DC-link capacitors for inverter or converter applications, several key specifications must be evaluated. The rated capacitance determines the energy storage capacity and ripple voltage characteristics - typically ranging from tens to thousands of microfarads depending on power level. The rated voltage must exceed the maximum DC bus voltage with safety margin, usually 1.2 to 1.5 times the nominal voltage. Ripple current rating is critical as it affects capacitor heating and lifetime - higher ripple current capability allows for more compact designs. The equivalent series resistance (ESR) and equivalent series inductance (ESL) affect high-frequency performance and switching losses. Temperature rating and expected operational lifetime at rated conditions should also be considered for reliability calculations.

Provide your DC bus voltage, switching frequency, ripple current requirements, and expected lifetime to our FAE team for DC-link capacitor selection assistance.

The lifetime of Tongfeng film capacitors depends on the specific series and operating conditions. Standard AC motor capacitors (CBB60/CBB61/CBB65) typically have a rated lifetime of 3,000 to 10,000 hours at rated voltage and maximum operating temperature (usually 70C or 85C). Under actual operating conditions with voltage derating and lower temperatures, the expected lifetime can be significantly longer - often 50,000 to 100,000 hours or more. Industrial-grade DC-link capacitors may have rated lifetimes of 10,000 to 50,000 hours depending on the specific design and operating conditions. The lifetime follows the Arrhenius relationship with temperature - for every 10C reduction in operating temperature, the lifetime approximately doubles. Proper voltage derating and thermal management are essential for maximizing capacitor lifetime.

For applications requiring extended lifetime, select capacitors with higher temperature ratings and implement adequate voltage derating and thermal management.